CA2062219A1 - Cement based patching composition for asphalt pavement - Google Patents
Cement based patching composition for asphalt pavementInfo
- Publication number
- CA2062219A1 CA2062219A1 CA 2062219 CA2062219A CA2062219A1 CA 2062219 A1 CA2062219 A1 CA 2062219A1 CA 2062219 CA2062219 CA 2062219 CA 2062219 A CA2062219 A CA 2062219A CA 2062219 A1 CA2062219 A1 CA 2062219A1
- Authority
- CA
- Canada
- Prior art keywords
- composition
- percent
- weight
- mixture
- amount
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/005—Methods or materials for repairing pavings
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
Abstract of the Disclosure A paving composition comprises a cement binder, a dispersible latex polymer binder, and a mineral aggregate filler such as sand. The filler may be made up of mineral fines such as fly ash, mineral aggregate such as sand, and/or an elastomeric filler such as ground rubber particles. The composition may further include a defoamer, a plasticizer and a dispersible pigment, the latter preferably being a black pigment to to color the composition to that of asphalt pavement. Preferably, the composition is in the form of a dry mixture capable of forming a hard patch bonded to an asphalt surface when admixed with water in which the cement binder comprises up to about 15 percent by weight of the mixture, the latex polymer binder comprises up to about 10 percent by weight of the mixture, the elastomeric filler comprises up to about 10 percent by weight of the mixture, the mineral filler comprises up to about 30 percent by weight of the mixture, and the mineral aggregate filler comprises from about 60-98 percent by weight of the mixture. The present invention is directed in particular to use in patching a depression in asphalt pavement by.
preparing a patching composition as described above, admixing the patching composition with water, filling the depression with the patching composition, and curing the patching composition to form a hardened patch in the pavement. When completed, the hardened, essentially bitumen-free patching composition has a surface conforming substantially to the surface of the surrounding asphalt pavement and is bonded thereto.
preparing a patching composition as described above, admixing the patching composition with water, filling the depression with the patching composition, and curing the patching composition to form a hardened patch in the pavement. When completed, the hardened, essentially bitumen-free patching composition has a surface conforming substantially to the surface of the surrounding asphalt pavement and is bonded thereto.
Description
20622i9 CEMENT BASED ~LÇlIY~ CO~PQS M~ON
EQ~ I~SPK~
Backq~ound of thçl nyçn~-ion This invention relates to a cement based patching composition and, in particular, to a patching CQmpoSitiOn which~ incorporates cement, a dispersiblQ latex polymer binder, a minQral aggregate fillor and an elastromeric filler, and a method for using same in paving, repairing or filling depressions in asphalt pavement.
Because of degradation due to use and weather, repair o~ asphalt or bituminous pavement as always been a great concern ~or those who must maintain highways, roads and parking areas. As used herein, the terms ~asphalt~ and ~bituminou~" shall be used interchangeably to refer to pavement surfaces in which bitumen-containing materials are employed as a base for the pavement. Repair of such pavements i5 also of great concern to the average homeowner or small business owner who cannot easily and inexpensively obtain the material and equipment need for conventional hot or cold asphalt patching. At most, only common hand tools and equipment are available to effect such repairs.
Bitumen emulsions and bitumen emulsions containing mineral fillers are sometimes used to filling depressions in asphalt surfaces. While these materials may be easily applied with hand tools, they are generally not suitable in applications where filling i8 re~uired to a depth greater than one-half inch. Another product, ~Asphalt Repair~ manufactured by Set Con6umer Products,- Inc., comprises black pigmented magnesium phosphate concrete and may be used ~or repair of asphalt pavement in 206~219 thicknesses great than one-hal~ inch. ~owever, this product i5 generally not useful in applications of lower thickness or for applying a ~eather edge to a patch, and doeR not exhibit ~lexibility con~orming substantially to the surrounding asphalt pave~ent.
Concrete mixes consi~ting generally in excess of 12-15~ portland cement, the balance being sand and/or stone aggregate, are sometimes Qmployed to patch depressions, holes or cracks in asphalt pavement. Such products are generally easily prepar~d by mixing with water, utilizing conventional hand tools, and do not require any specialized equipment or technigues to apply. However, cementitious materials such as cOncrQte mixes normally do not bond sufficiently to asphalt, nor do they exhibit enough flexibility to conform to the de~ormation encountered on asphalt p~vement sur~aces.
Other prior art patching and paving compositions are disclosed in U.S. Patent Z,773,777 to Alexander et al., U.~. Patent 4,021,393 to McDonald and U.S. Patent 2,~41,060 to Coppage. The Alexander et al. patent discloses a bituminous composition suitable for use in construction sur~aces such as roadway, foot paths, floor, or runaways, which comprise~ a selected mineral aggregate bitumen, portland cement and a small amount of at least one water soluble polyvalent metal salt of a strong mineral acid. McDonald discloses an elastromeric paving material which incorporates ground rubber into asphalt, while Coppage discloses a so-called ~bituminous concrete~
paving composition in which a natural or synthetic rubber aqueous dispersion is in;ected into a heat-liquified bituminous material. However, these latter two compositions are required to be heated prior to application.
Bearing in mind the problems and deficiencies in the prior art and long ~elt needs, it i8 there~ore an object o~ the present invention to provide an improved, bitumen-free patching composition which is compatible with asphalt paving.
It is another object of the present invention to provide a paving or patching composition which may be applied using conventional hand tools.
It is a further object o~ the present invention to provide a paving or patching composition which i5 available in dry, granular form and may be mixed with water at the work site.
It is yet another ob~ect o~ the present invention to provide a bitumen-free patching composition which i8 lS compatible in ~lexibility and other propertie~ with asphalt paving and which bonds tightly to the asphalt pavement.
It i8 a ~urther ob~ect o~ the presQnt invention to provide an improved paving and patching compo~ition which meets the aforestated ob~ect~, yet which i8 relatively inexpensive to manu~acture and easy to apply to pavement without heating.
It i8 yet another ob~ect of the present invention to provide a long lasting, durable, flexible patching composition which blends in with the surrounding asphalt pavement.
Summary of t~e InYçntion The above and other objects, which will be apparent to those skilled in the art, are achieved in the present invention which is directed in one aspect to a paving composition comprising a cement binder, a dispersible latex polymer binder, and a ~iller. The ~iller may be . . .
.
206221~
particles of mineral fines such as fly ash, mineral aggregate filler 6uch as sand, elastomeric ~iller such as ground rubber, or combinations thereo~. The composition may further include a defoamer, a plasticizer and a dispersible pigment, the latter preferably being a black pigment to color the composition to that of asphalt pavement. Pre~erably, the compo~ition i6 in the form of a dry mixture capable of forming a hard patch bonded to an asphalt 6urface when admixed with water in which the cement binder comprises up to about 15 percent by weight of the mixture, the mineral filler comprises up to about 30 percent by weight of the mixture, the latex polymer binder comprises up to about 10 percent by weight of the mixture, the e}astomeric filler comprises up to about 10 percent by weight of the mixture, and the mineral aggregate filler aomprises from about 60-98 percent by weight o~ the mixture.
In another aspect, the present invention is directed to a method of patching a depression in asphalt pavement comprising the steps o~ obtaining or preparing a patching composition as described above, admixing the patching composition with water, filling the deprQssion w~th thQ
patching composition, and curing the patching composition to form a hardened patch in the pavement. The aforedescribed method may be practiced with standard hand tools at ambient conditions and without the applying heat to the composition. When completed, the essentially bitumen-free hardened patchinq composition has a surface conforming substantially to the sur~ace of the surrounding asphalt pavement and is bonded thereto.
Detailed Description of the Inventlon The composition of the present invention i8 a cement based, preferably pigmented mix which exhibits sufficient flexibility and ~trength and which can bond adequately to repair asphalt pavement surracQ~. The composition o~ the present invention is most preferably used as patching composition for repairing depressions in asphalt or similar pavement surfaces, including holes, cracks, void~, and other damaged or deterlorated area~. The composition of the invention may also be u~ed as a general paving composition to replace existing sections of asphalt pavement or to create new pavement surfaces compatible with asphalt pavement.
The prePerred embodiment o~ the pre6ent inventlon incorporates the components of the paving composition in dry, granular, free-flowing, preblended form for admixture with water at the work site. Such admixture may be done prior to applying the composition to the surface, for example, in a wheel barrel or by using conventional hand tools such as a shovel or hoe.
Alternatively, if such premixing is not convenient, water may be incorporated into the preblended components on the work surface itsel~ either by pouring a sufficient amount of water to the depression and then adding the preblended components, or vise ~ersa.
The cement portion normally comprises only a minor amount of the total dry mixture of the components, and is preferably on the order of less than 15-20% by weight of the total dry mixture. Unless otherwise stated, all percentages disclosed herein are by weight. The cement is more preferably employed in the range of 1-10%, and most preferably in the range of 2-6%, of the mixture.
The term ~cement~ refers generally to cementitious compo~itions incorporating lime, alumina, silica and other components, such as portland cement and the li~e, although other specialty cements may also be utilized.
Portland cement i~ the preferred cement utilized.
Although the cement acts as a binder for compressive strength, the total amount of cement employed should generally be kept to a low enough level to limit ultimate strength and brittleness so that the properties of the hardened patch are compatible with those of the surrounding asphalt pavement. This aspect is relatively important since asphalt pavement has lower strength and higher flexibility than cured concrete.
In con;unction with and to supplement the cement portion, one or more fillers having essentially no binding ability of their own are provided in the dry mixture. Such fillers may be natural (e.g. mineral) or synthetic (e.g. synthetic pol~mer) particles, and sized as either fines, larger aggregate or a mixture o~ each.
As.used herein, the terms ~aggregate~ and ~fines~ refer generally to particles having sizes above and below loO
mesh (U.S. Standard), respectively. Examples of mineral aggregate filler are sand or stone. The sand may be any grade~ of sand generally utilized with cementitiou~
product6, such as oolitic aragonite sand having a cac03 content of at least 95%, and i8 preferably 99% -20 mesh (U.S. Standard), and less than 1% -200 mesh (approximately American Foundry Sand No. 51). Filiers made up of elastomeric particles are also useful and are discussed further below. The total amount of filler such as sand or other mineral aggregate filler may be in the range of about 60-98% of the mixture, preferably in.~the range of about 75-90% of the mixture.
Other mineral filler~ which supplement the cement to provide mineral fines may be incorporated into the dry mixture in addition to the mineral aggregate and other .. .
~illers described above to provide texture and con~i~tency. A preferred ~ine mineral filler iB ~ly a8h, a lime-reactive, water insoluble ~iller made from burning anthracite or bituminous coal. Where fly ash is employed, it i8 usually of smaller particle size, approximately 99% -loo mesh. It i8 important that the fly ash or other mineral fines have a particle size distribution which approximates and simulates the particle size distribution of the cement, and forms a paste upon mixing with water which fills the ~oids in the aggregate matrix. The fly ash or other fine mineral ~illers may be employed in the range of up to about 30%
o~ the mixture.
To permit the components of the mixture to ~orm ~lexible bonds between the cement particle~ as well a~
between the cement particles and the other aggregate6, there iB provided in the mixture a dispersible latex polymer binder. This latex binder i8 pre~erably in a dry granular ~orm 80 as not to introduce water or other aqueous solution into the mlx prior to admixture at the work site. The latex polymer binder may be a natural or synthetic latex, or a combination of more than one latex. Preferably, the latex polymer binder is an ethylene-vinyl acetate copolymer ~20/80 monomer ratio).
Generally, the latex polymer binder may be provided in an amount up to approximately 15% o~ the mixture and is preferably in th~ range of 1-10%, more pre~erably 2-5%, o~ the mixture. The dry latex binder iB generally incorporated in an amount of 0.5 to 1.0 times the amount o~ cement present in the mixture. Optlonally, a de~oamer to reduce air entrapment by the latex following admixture with water (and therefore increase it~ toughness and structural strength; may be incorporated in an amount up to about 5~, and pre~erably no more than approximately than 3%, o~ the mixture.
2062~ 9 While the use o~ the disper~iblQ latex polymer binder provides adequate flexibllity and adhe~ion to the patching composition, and, in particular, its ability to bond to the asphalt pavement, additional flexibility may be obtained by incorporating an elastomeric filler such as natural or synthetic rubber or other elastomeric particles. Preferably ground up rubber such as that obtained by recycling motor vehicle tires may be utilized. The preferred particle 8iZ~ 0~ the elastom~ric filler is less than about 80 microns. Such elastromeric fillers may be employed generally in range of up to about 15%, preferably no greater than about 5-10%, of the mixture.
Other optional components include superplasticizers and/or water reducers to increase fluidity o~ the composition and to lower the water reguirements, such as melamine sul~onate condensate. Such superplasticizers and water reducer~ may be incorporated in amounts up to about 3% o~ the mixture. Also, to ensure that the patch aesthetically conforms to the asphalt sur~ace, a dispersible pigment such as a black pigment comprising lampblack may be incorporated in an amount up to about 5%
of the mixture.
In use, the composition of the present invention requires no addition o~ bitumen based ingredients, and may be mixed with water and applied to the work surface at prevailing ambient outdoor temperatures in the range of 50-100-F. The preferred amount of water is about 150ml/kg dry mix, although other amounts of water may be used to give di~erent conslstencies. As with other cementitious compositions employing water, it is preferable that the composition not be applied in sub-freezing temperatures unlQss steps are taken to g ensure that the water doe~ not ~reeze prior to full reaction with the components oP the composition. Like concrete mix, the present invention i8 amenable to manufacture as a ~table, dry, free-flowing baggable mix for consumer use.
Depressions in asphalt pavement may be repaired by removing foreign material from the deprQssion, obtaining th~ preblended patching compositlon as de~cribed a~ove, admixing the composition with water either before or while filling the depression, and then permitting the composition to cure to form a hardened patch. Prior to the initial set of the composition, the surface should be troweled smooth or 6haped to conform substantially to the surrounding pavement. A particular advantage of the present invention is that it i8 UgQfUl not only in relatively deep deprQssions in which the patch thickness is greater than 2 inches, but also in relatively shallow depressions of less than 1/2 inah thickne6s. As such, the edges of the patch may be fQathered to minimal thicknes6 while still retaining sufficient strength and ~lexibility, and bonding to the asphalt pavement. The composition o~ the present invention when utilized as a patch develops physical characteristics which are comparable to the surrounding asphalt pavement so that it resists cracking or crumbling because of difference~ in strength or flexibility. Final set occurs in approximately six to eight hours, with curing occurring in abo~t 2~ hours. Additionally, the thermal expansion properties of the composition are sufficiently close to asphalt to minimize cracking, which also reduces the tendency for separation cracks to develop which could result in collection of water and breakup due to the freeze/thaw cycle in northern climates. The composition --10-- ' is likewise useful in replacing sections o~ asphalt pavement or in new pavements, if so desired.
Non-limiting examples of preferred embodiments of the present invention are set forth below in Tables I and II.
Table I
Co,mpon~,nts Wt,~ f ~otal Ideal Basic Regulated Set Cement 3.50 Oolitic Aragonite Sand 86.86 Flyash 4.50 Airflex RP-245 Redispersible Latex Powder 2.58 Rhone-Poulenc 775DD Defoamer 0.85 Rouse GF-80 Mlcro-ground Rubber 0.50 Melment F-10 Superplasticizer/Dispersant 0.15 Mineral Pigments #8452 Black l.ol T,akL~_II' 55~ an~g ' ' w~ ~ o~ Total Ideal Basic Regul'ated Set Cement 4.25 '' Oolitic Aragonite Sand 86.86 Flyash 3.80 20 Air~lex Rp-24s RedispQrsible Latex Powder 2.s8 Rhone-Poulenc 775DD Defoamer 0.85 Rouse GF-80 Micro-ground Rubber 0.50 Melment F-10 Superplasticizer/Dispersant 0. lS
Mineral Pigments #8452 Black 1.01 Dry mixes of the formulations shown in Tables 1 and 2 have been mixed with''water in the ratio of approximately 150ml water/kg dry mix and troweled into forms to thicknesses'o~ 1/4 and 5/8 inch. At various stages of curing, usually 18 to 24 hours after mixing an 2~6221~
application, ~pecimens are sub;ected to a general water stream impinging on the center from above for a period of approximately 20 minutes. Specimens made from the formulations o~ Tables 1 an~ 2 have not shown any observed erosion. Additionally, such sample~ have shown resistance to abrasion, depression and slicing, and furthermore, have shown acceptable flexure upon bending.
While this invention has been described with re~erence to speci~ic embodiments, it will be recognized by those skilled in the art that variations are possible without departing from the spirit and scope of the invention, and that it i6 intended to cover all changes and modifications of the invention disclosed herein for the purposes o~ illustrqtion which do not constitute departure ~rom the spirit and scope o~ the invention.
Having thus described the invention, what is claimed .. i8:
EQ~ I~SPK~
Backq~ound of thçl nyçn~-ion This invention relates to a cement based patching composition and, in particular, to a patching CQmpoSitiOn which~ incorporates cement, a dispersiblQ latex polymer binder, a minQral aggregate fillor and an elastromeric filler, and a method for using same in paving, repairing or filling depressions in asphalt pavement.
Because of degradation due to use and weather, repair o~ asphalt or bituminous pavement as always been a great concern ~or those who must maintain highways, roads and parking areas. As used herein, the terms ~asphalt~ and ~bituminou~" shall be used interchangeably to refer to pavement surfaces in which bitumen-containing materials are employed as a base for the pavement. Repair of such pavements i5 also of great concern to the average homeowner or small business owner who cannot easily and inexpensively obtain the material and equipment need for conventional hot or cold asphalt patching. At most, only common hand tools and equipment are available to effect such repairs.
Bitumen emulsions and bitumen emulsions containing mineral fillers are sometimes used to filling depressions in asphalt surfaces. While these materials may be easily applied with hand tools, they are generally not suitable in applications where filling i8 re~uired to a depth greater than one-half inch. Another product, ~Asphalt Repair~ manufactured by Set Con6umer Products,- Inc., comprises black pigmented magnesium phosphate concrete and may be used ~or repair of asphalt pavement in 206~219 thicknesses great than one-hal~ inch. ~owever, this product i5 generally not useful in applications of lower thickness or for applying a ~eather edge to a patch, and doeR not exhibit ~lexibility con~orming substantially to the surrounding asphalt pave~ent.
Concrete mixes consi~ting generally in excess of 12-15~ portland cement, the balance being sand and/or stone aggregate, are sometimes Qmployed to patch depressions, holes or cracks in asphalt pavement. Such products are generally easily prepar~d by mixing with water, utilizing conventional hand tools, and do not require any specialized equipment or technigues to apply. However, cementitious materials such as cOncrQte mixes normally do not bond sufficiently to asphalt, nor do they exhibit enough flexibility to conform to the de~ormation encountered on asphalt p~vement sur~aces.
Other prior art patching and paving compositions are disclosed in U.S. Patent Z,773,777 to Alexander et al., U.~. Patent 4,021,393 to McDonald and U.S. Patent 2,~41,060 to Coppage. The Alexander et al. patent discloses a bituminous composition suitable for use in construction sur~aces such as roadway, foot paths, floor, or runaways, which comprise~ a selected mineral aggregate bitumen, portland cement and a small amount of at least one water soluble polyvalent metal salt of a strong mineral acid. McDonald discloses an elastromeric paving material which incorporates ground rubber into asphalt, while Coppage discloses a so-called ~bituminous concrete~
paving composition in which a natural or synthetic rubber aqueous dispersion is in;ected into a heat-liquified bituminous material. However, these latter two compositions are required to be heated prior to application.
Bearing in mind the problems and deficiencies in the prior art and long ~elt needs, it i8 there~ore an object o~ the present invention to provide an improved, bitumen-free patching composition which is compatible with asphalt paving.
It is another object of the present invention to provide a paving or patching composition which may be applied using conventional hand tools.
It is a further object o~ the present invention to provide a paving or patching composition which i5 available in dry, granular form and may be mixed with water at the work site.
It is yet another ob~ect o~ the present invention to provide a bitumen-free patching composition which i8 lS compatible in ~lexibility and other propertie~ with asphalt paving and which bonds tightly to the asphalt pavement.
It i8 a ~urther ob~ect o~ the presQnt invention to provide an improved paving and patching compo~ition which meets the aforestated ob~ect~, yet which i8 relatively inexpensive to manu~acture and easy to apply to pavement without heating.
It i8 yet another ob~ect of the present invention to provide a long lasting, durable, flexible patching composition which blends in with the surrounding asphalt pavement.
Summary of t~e InYçntion The above and other objects, which will be apparent to those skilled in the art, are achieved in the present invention which is directed in one aspect to a paving composition comprising a cement binder, a dispersible latex polymer binder, and a ~iller. The ~iller may be . . .
.
206221~
particles of mineral fines such as fly ash, mineral aggregate filler 6uch as sand, elastomeric ~iller such as ground rubber, or combinations thereo~. The composition may further include a defoamer, a plasticizer and a dispersible pigment, the latter preferably being a black pigment to color the composition to that of asphalt pavement. Pre~erably, the compo~ition i6 in the form of a dry mixture capable of forming a hard patch bonded to an asphalt 6urface when admixed with water in which the cement binder comprises up to about 15 percent by weight of the mixture, the mineral filler comprises up to about 30 percent by weight of the mixture, the latex polymer binder comprises up to about 10 percent by weight of the mixture, the e}astomeric filler comprises up to about 10 percent by weight of the mixture, and the mineral aggregate filler aomprises from about 60-98 percent by weight o~ the mixture.
In another aspect, the present invention is directed to a method of patching a depression in asphalt pavement comprising the steps o~ obtaining or preparing a patching composition as described above, admixing the patching composition with water, filling the deprQssion w~th thQ
patching composition, and curing the patching composition to form a hardened patch in the pavement. The aforedescribed method may be practiced with standard hand tools at ambient conditions and without the applying heat to the composition. When completed, the essentially bitumen-free hardened patchinq composition has a surface conforming substantially to the sur~ace of the surrounding asphalt pavement and is bonded thereto.
Detailed Description of the Inventlon The composition of the present invention i8 a cement based, preferably pigmented mix which exhibits sufficient flexibility and ~trength and which can bond adequately to repair asphalt pavement surracQ~. The composition o~ the present invention is most preferably used as patching composition for repairing depressions in asphalt or similar pavement surfaces, including holes, cracks, void~, and other damaged or deterlorated area~. The composition of the invention may also be u~ed as a general paving composition to replace existing sections of asphalt pavement or to create new pavement surfaces compatible with asphalt pavement.
The prePerred embodiment o~ the pre6ent inventlon incorporates the components of the paving composition in dry, granular, free-flowing, preblended form for admixture with water at the work site. Such admixture may be done prior to applying the composition to the surface, for example, in a wheel barrel or by using conventional hand tools such as a shovel or hoe.
Alternatively, if such premixing is not convenient, water may be incorporated into the preblended components on the work surface itsel~ either by pouring a sufficient amount of water to the depression and then adding the preblended components, or vise ~ersa.
The cement portion normally comprises only a minor amount of the total dry mixture of the components, and is preferably on the order of less than 15-20% by weight of the total dry mixture. Unless otherwise stated, all percentages disclosed herein are by weight. The cement is more preferably employed in the range of 1-10%, and most preferably in the range of 2-6%, of the mixture.
The term ~cement~ refers generally to cementitious compo~itions incorporating lime, alumina, silica and other components, such as portland cement and the li~e, although other specialty cements may also be utilized.
Portland cement i~ the preferred cement utilized.
Although the cement acts as a binder for compressive strength, the total amount of cement employed should generally be kept to a low enough level to limit ultimate strength and brittleness so that the properties of the hardened patch are compatible with those of the surrounding asphalt pavement. This aspect is relatively important since asphalt pavement has lower strength and higher flexibility than cured concrete.
In con;unction with and to supplement the cement portion, one or more fillers having essentially no binding ability of their own are provided in the dry mixture. Such fillers may be natural (e.g. mineral) or synthetic (e.g. synthetic pol~mer) particles, and sized as either fines, larger aggregate or a mixture o~ each.
As.used herein, the terms ~aggregate~ and ~fines~ refer generally to particles having sizes above and below loO
mesh (U.S. Standard), respectively. Examples of mineral aggregate filler are sand or stone. The sand may be any grade~ of sand generally utilized with cementitiou~
product6, such as oolitic aragonite sand having a cac03 content of at least 95%, and i8 preferably 99% -20 mesh (U.S. Standard), and less than 1% -200 mesh (approximately American Foundry Sand No. 51). Filiers made up of elastomeric particles are also useful and are discussed further below. The total amount of filler such as sand or other mineral aggregate filler may be in the range of about 60-98% of the mixture, preferably in.~the range of about 75-90% of the mixture.
Other mineral filler~ which supplement the cement to provide mineral fines may be incorporated into the dry mixture in addition to the mineral aggregate and other .. .
~illers described above to provide texture and con~i~tency. A preferred ~ine mineral filler iB ~ly a8h, a lime-reactive, water insoluble ~iller made from burning anthracite or bituminous coal. Where fly ash is employed, it i8 usually of smaller particle size, approximately 99% -loo mesh. It i8 important that the fly ash or other mineral fines have a particle size distribution which approximates and simulates the particle size distribution of the cement, and forms a paste upon mixing with water which fills the ~oids in the aggregate matrix. The fly ash or other fine mineral ~illers may be employed in the range of up to about 30%
o~ the mixture.
To permit the components of the mixture to ~orm ~lexible bonds between the cement particle~ as well a~
between the cement particles and the other aggregate6, there iB provided in the mixture a dispersible latex polymer binder. This latex binder i8 pre~erably in a dry granular ~orm 80 as not to introduce water or other aqueous solution into the mlx prior to admixture at the work site. The latex polymer binder may be a natural or synthetic latex, or a combination of more than one latex. Preferably, the latex polymer binder is an ethylene-vinyl acetate copolymer ~20/80 monomer ratio).
Generally, the latex polymer binder may be provided in an amount up to approximately 15% o~ the mixture and is preferably in th~ range of 1-10%, more pre~erably 2-5%, o~ the mixture. The dry latex binder iB generally incorporated in an amount of 0.5 to 1.0 times the amount o~ cement present in the mixture. Optlonally, a de~oamer to reduce air entrapment by the latex following admixture with water (and therefore increase it~ toughness and structural strength; may be incorporated in an amount up to about 5~, and pre~erably no more than approximately than 3%, o~ the mixture.
2062~ 9 While the use o~ the disper~iblQ latex polymer binder provides adequate flexibllity and adhe~ion to the patching composition, and, in particular, its ability to bond to the asphalt pavement, additional flexibility may be obtained by incorporating an elastomeric filler such as natural or synthetic rubber or other elastomeric particles. Preferably ground up rubber such as that obtained by recycling motor vehicle tires may be utilized. The preferred particle 8iZ~ 0~ the elastom~ric filler is less than about 80 microns. Such elastromeric fillers may be employed generally in range of up to about 15%, preferably no greater than about 5-10%, of the mixture.
Other optional components include superplasticizers and/or water reducers to increase fluidity o~ the composition and to lower the water reguirements, such as melamine sul~onate condensate. Such superplasticizers and water reducer~ may be incorporated in amounts up to about 3% o~ the mixture. Also, to ensure that the patch aesthetically conforms to the asphalt sur~ace, a dispersible pigment such as a black pigment comprising lampblack may be incorporated in an amount up to about 5%
of the mixture.
In use, the composition of the present invention requires no addition o~ bitumen based ingredients, and may be mixed with water and applied to the work surface at prevailing ambient outdoor temperatures in the range of 50-100-F. The preferred amount of water is about 150ml/kg dry mix, although other amounts of water may be used to give di~erent conslstencies. As with other cementitious compositions employing water, it is preferable that the composition not be applied in sub-freezing temperatures unlQss steps are taken to g ensure that the water doe~ not ~reeze prior to full reaction with the components oP the composition. Like concrete mix, the present invention i8 amenable to manufacture as a ~table, dry, free-flowing baggable mix for consumer use.
Depressions in asphalt pavement may be repaired by removing foreign material from the deprQssion, obtaining th~ preblended patching compositlon as de~cribed a~ove, admixing the composition with water either before or while filling the depression, and then permitting the composition to cure to form a hardened patch. Prior to the initial set of the composition, the surface should be troweled smooth or 6haped to conform substantially to the surrounding pavement. A particular advantage of the present invention is that it i8 UgQfUl not only in relatively deep deprQssions in which the patch thickness is greater than 2 inches, but also in relatively shallow depressions of less than 1/2 inah thickne6s. As such, the edges of the patch may be fQathered to minimal thicknes6 while still retaining sufficient strength and ~lexibility, and bonding to the asphalt pavement. The composition o~ the present invention when utilized as a patch develops physical characteristics which are comparable to the surrounding asphalt pavement so that it resists cracking or crumbling because of difference~ in strength or flexibility. Final set occurs in approximately six to eight hours, with curing occurring in abo~t 2~ hours. Additionally, the thermal expansion properties of the composition are sufficiently close to asphalt to minimize cracking, which also reduces the tendency for separation cracks to develop which could result in collection of water and breakup due to the freeze/thaw cycle in northern climates. The composition --10-- ' is likewise useful in replacing sections o~ asphalt pavement or in new pavements, if so desired.
Non-limiting examples of preferred embodiments of the present invention are set forth below in Tables I and II.
Table I
Co,mpon~,nts Wt,~ f ~otal Ideal Basic Regulated Set Cement 3.50 Oolitic Aragonite Sand 86.86 Flyash 4.50 Airflex RP-245 Redispersible Latex Powder 2.58 Rhone-Poulenc 775DD Defoamer 0.85 Rouse GF-80 Mlcro-ground Rubber 0.50 Melment F-10 Superplasticizer/Dispersant 0.15 Mineral Pigments #8452 Black l.ol T,akL~_II' 55~ an~g ' ' w~ ~ o~ Total Ideal Basic Regul'ated Set Cement 4.25 '' Oolitic Aragonite Sand 86.86 Flyash 3.80 20 Air~lex Rp-24s RedispQrsible Latex Powder 2.s8 Rhone-Poulenc 775DD Defoamer 0.85 Rouse GF-80 Micro-ground Rubber 0.50 Melment F-10 Superplasticizer/Dispersant 0. lS
Mineral Pigments #8452 Black 1.01 Dry mixes of the formulations shown in Tables 1 and 2 have been mixed with''water in the ratio of approximately 150ml water/kg dry mix and troweled into forms to thicknesses'o~ 1/4 and 5/8 inch. At various stages of curing, usually 18 to 24 hours after mixing an 2~6221~
application, ~pecimens are sub;ected to a general water stream impinging on the center from above for a period of approximately 20 minutes. Specimens made from the formulations o~ Tables 1 an~ 2 have not shown any observed erosion. Additionally, such sample~ have shown resistance to abrasion, depression and slicing, and furthermore, have shown acceptable flexure upon bending.
While this invention has been described with re~erence to speci~ic embodiments, it will be recognized by those skilled in the art that variations are possible without departing from the spirit and scope of the invention, and that it i6 intended to cover all changes and modifications of the invention disclosed herein for the purposes o~ illustrqtion which do not constitute departure ~rom the spirit and scope o~ the invention.
Having thus described the invention, what is claimed .. i8:
Claims (23)
1. A paving composition comprising:
a cement binder;
a dispersible latex polymer binder: and a filler.
a cement binder;
a dispersible latex polymer binder: and a filler.
2. The composition of claim 1 wherein said filler is selected from the group consisting of particles of mineral fines, mineral aggregate and elastomeric fillers, and combinations thereof.
3. The composition of claim 1 wherein the amount of said cement is up to about 15 percent by weight of said composition.
4. The composition Or claim l wherein the amount of said latex polymer binder is up to about 10 percent by weight of said composition.
5. The composition of claim 1 wherein the amount of said filler is from about 60-98 percent by weight of said composition.
6. The composition of claim 2 including an elastomeric filler in an amount up to about 10 percent by weight of said composition.
7. The composition of claim 2 wherein said composition further includes a defoamer, a plasticizer and a dispersible pigment.
8. The composition of claim 2 wherein said cement binder comprises up to about 10 percent by weight of said composition and said latex polymer binder comprises up to about 10 percent by weight of said composition, and including mineral fines comprising up to about 30 percent by weight of said composition, mineral aggregate comprising from about 75-90 percent by weight of said composition, and an elastomeric filler comprising up to about 10 percent by weight Or said composition.
9. The composition of claim 2 wherein said filler comprises fly ash, sand, and rubber particles.
10. A dry mixture capable of forming a hard patch bonded to an asphalt surface when admixed with water comprising:
a cement binder in an amount up to about 15 percent by weight of said mixture;
a latex polymer binder in an amount up to about 15 percent by weight of said mixture;
an elastomeric filler in an amount up to about 15 percent by weight of said mixture; and a mineral aggregate filler in an amount of about 60-98 percent by weight of said mixture.
a cement binder in an amount up to about 15 percent by weight of said mixture;
a latex polymer binder in an amount up to about 15 percent by weight of said mixture;
an elastomeric filler in an amount up to about 15 percent by weight of said mixture; and a mineral aggregate filler in an amount of about 60-98 percent by weight of said mixture.
11. The composition of claim 10 wherein said composition further includes mineral fines in an amount up to about 30 percent by weight of said mixture.
12. The composition of claim 10 wherein said composition further includes a plasticizer in an amount up to about 5 percent by weight of said mixture.
13. The composition of claim 10 wherein said composition further includes a defoamer in an amount up to about 5 percent by weight of said mixture.
14. The composition of claim 10 wherein said composition further includes a dispersible pigment in an amount up to about 5 percent by weight of said mixture.
15. The composition of claim 10 wherein said cement includes portland cement in an amount up to 10 percent by weight of said mixture, and said mineral aggregate filler includes sand in an amount of about 75-90 percent by weight of said mixture.
16. A method of patching a depression in asphalt pavement comprising the steps of:
a) preparing a patching composition comprising a cement binder; a dispersible latex polymer binder: and a filler;
b) admixing said patching composition with water;
c) filling said depression with said patching composition;
and d) curing said patching composition to form a hardened patch on said pavement.
a) preparing a patching composition comprising a cement binder; a dispersible latex polymer binder: and a filler;
b) admixing said patching composition with water;
c) filling said depression with said patching composition;
and d) curing said patching composition to form a hardened patch on said pavement.
17. The method of claim 16 wherein said patching composition comprises cement binder in an amount up to about 15 percent by weight of said composition, latex polymer binder in an amount up to about 10 percent by weight of said composition, mineral fines in an amount up to about 30 percent by weight of said composition, mineral aggregate in an amount from about 70-90 percent by weight of said composition, and elastomeric filler in an amount up to about 10 percent by weight of said composition.
18. The method of claim 16 wherein said patching composition further includes a defoamer in an amount up to about 5 percent by weight of said mixture, a plasticizer in an amount up to about 5 percent by weight of said mixture, and a dispersible pigment in an amount up to about 5 percent by weight of said mixture.
19. The method of claim 16 wherein said composition includes portland cement in an amount up to lo percent by weight of said mixture and sand in an amount of about 75-90 percent by weight of said mixture.
20. The method of claim 16 wherein said filler comprises fly ash, sand, and rubber particles.
21. A pavement surface comprising an asphalt pavement surface having a shallow depression in a portion thereof, said depression being filled with a hardened patching composition made by reacting a mixture of a cement binder, a dispersible latex polymer binder and a filler with water, said patching composition having a surface conforming substantially to the surface of the surrounding asphalt pavement and being bonded thereto.
22. The pavement surface of claim 21 wherein said filler comprises fly ash, sand, and rubber particles.
23. The pavement surface of claim 21 wherein said patching composition is essentially bitumen-free.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US668,923 | 1984-11-06 | ||
| US07/668,923 US5244304A (en) | 1991-03-13 | 1991-03-13 | Cement based patching composition for asphalt pavement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2062219A1 true CA2062219A1 (en) | 1992-09-14 |
Family
ID=24684318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2062219 Abandoned CA2062219A1 (en) | 1991-03-13 | 1992-03-03 | Cement based patching composition for asphalt pavement |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US5244304A (en) |
| CA (1) | CA2062219A1 (en) |
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Families Citing this family (69)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5391226A (en) * | 1992-04-23 | 1995-02-21 | Tiremix Corporation | Rubber-crumb-reinforced cement concrete |
| US5456751A (en) * | 1993-09-03 | 1995-10-10 | Trustees Of The University Of Pennsylvania | Particulate rubber included concrete compositions |
| US5853473A (en) * | 1993-11-26 | 1998-12-29 | Donaldson; Harold | Patching composition for concrete surfaces |
| US5460649A (en) * | 1994-06-06 | 1995-10-24 | Strassman; David R. | Fiber-reinforced rubber asphalt composition |
| DE19649478A1 (en) * | 1995-12-22 | 1997-06-26 | Bauer Wulf Dr | Aq. dispersions of synthetic latex and lauryl sulphonate for concrete |
| US5762702A (en) * | 1997-05-05 | 1998-06-09 | Guy; Miriam T. | Mechanical disintegration of whole discarded tires used as aggregates for concrete compositions |
| US5918429A (en) * | 1997-08-13 | 1999-07-06 | The Quikrete Companies | Method and apparatus for providing concrete products having improved surface and structural characteristics |
| GB2328439B (en) * | 1997-08-19 | 2001-09-05 | Fibrescreed Ltd | Synthetic asphalt |
| FR2769684B1 (en) * | 1997-10-10 | 1999-12-17 | Pont A Mousson | INTERNAL COATING PRODUCT OF A PIPE ELEMENT, METHOD AND MACHINE FOR IMPLEMENTING SAME, AND PIPE ELEMENT COATED WITH THIS PRODUCT |
| US6672015B2 (en) * | 1999-02-25 | 2004-01-06 | Menard Soltraitement | Concrete pile made of such a concrete and method for drilling a hole adapted for receiving the improved concrete pile in a weak ground |
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| GB2398791B (en) | 2001-11-02 | 2004-10-13 | John Thomas Liddy | Improved block paving sand |
| WO2003106769A1 (en) * | 2002-06-14 | 2003-12-24 | Ace Tire & Parts, Inc. | Recyclable composite material and method of using composite |
| US7607483B2 (en) * | 2004-04-19 | 2009-10-27 | Halliburton Energy Services, Inc. | Sealant compositions comprising colloidally stabilized latex and methods of using the same |
| US20060009551A1 (en) * | 2004-07-06 | 2006-01-12 | Amme Robert C | Asphalt-rubber material for pedestrian and bicycle trails |
| KR100478631B1 (en) * | 2004-08-31 | 2005-03-23 | 주식회사 유닉스라바 | Coloring binder for pavement of a road and method for producing the same |
| US20070111900A1 (en) * | 2005-11-11 | 2007-05-17 | Reddy B R | Sealant compositions comprising solid latex |
| US20070111901A1 (en) * | 2005-11-11 | 2007-05-17 | Reddy B R | Method of servicing a wellbore with a sealant composition comprising solid latex |
| US7488705B2 (en) * | 2004-12-08 | 2009-02-10 | Halliburton Energy Services, Inc. | Oilwell sealant compositions comprising alkali swellable latex |
| KR100557300B1 (en) * | 2005-08-31 | 2006-03-03 | 유흥식 | Soil rock layer's composition, constructing method thereof and road construction method thereby |
| US20070062416A1 (en) * | 2005-09-22 | 2007-03-22 | Brzuskiewicz John E | Patching composition having tailorable appearance properties |
| US20070086860A1 (en) * | 2005-10-17 | 2007-04-19 | Shaw Lee A | Concrete template and method of use |
| DE502006002724D1 (en) * | 2006-07-24 | 2009-03-12 | Akzo Nobel Nv | Use of polymer powder in plaster joint mortars |
| GB2444721B (en) * | 2006-10-13 | 2008-12-17 | Resiblock Ltd | Improved jointing sand composition and method |
| EA200901629A1 (en) | 2007-06-28 | 2010-06-30 | Калера Корпорейшн | METHODS AND DESCRIPTION SYSTEMS INCLUDING THE DECOMPOSITION OF CARBONATE COMPOUNDS |
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| US20100239467A1 (en) | 2008-06-17 | 2010-09-23 | Brent Constantz | Methods and systems for utilizing waste sources of metal oxides |
| BRPI0821515A2 (en) | 2007-12-28 | 2019-09-24 | Calera Corp | co2 capture methods |
| US20090306251A1 (en) * | 2008-06-05 | 2009-12-10 | Georgia-Pacific Gypsum Llc | Fly ash-based floor patching composition |
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| WO2010009273A1 (en) | 2008-07-16 | 2010-01-21 | Calera Corporation | Co2 utilization in electrochemical systems |
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| US20100180528A1 (en) * | 2009-01-21 | 2010-07-22 | Shaw Ronald D | Decorative concrete and method of installing the same |
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| EP2247366A4 (en) | 2009-03-10 | 2011-04-20 | Calera Corp | Systems and methods for processing co2 |
| US20110008594A1 (en) * | 2009-07-07 | 2011-01-13 | Shaw Lee A | Concrete template and method of use |
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| US11359340B2 (en) | 2020-06-19 | 2022-06-14 | Cciip Llc | Microtrenching system having a vacuum hose support and method of microtrenching |
| US11466428B1 (en) | 2021-12-22 | 2022-10-11 | Cciip Llc | Microtrench plug and method for securing an optical fiber and/or microduct/innerduct in a microtrench |
| US11215781B1 (en) | 2020-11-30 | 2022-01-04 | Cciip Llc | Roadway access hole cutter having a utility avoidance safety device, method of cutting a hole in a roadway, method of cutting a horizontal hole under a roadway |
| US11815728B2 (en) | 2020-11-30 | 2023-11-14 | Cciip Llc | Roadway access hole cutter and method of cutting a square or rectangular roadway access hole |
| US11214450B1 (en) | 2021-03-11 | 2022-01-04 | Cciip Llc | Method of proofing an innerduct/microduct and proofing manifold |
| CN113200723A (en) * | 2021-05-28 | 2021-08-03 | 海阳市利安建材有限公司 | High-impermeability concrete and preparation method thereof |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2773777A (en) * | 1953-12-30 | 1956-12-11 | Shell Dev | Bituminous compositions |
| US2841060A (en) * | 1955-04-13 | 1958-07-01 | Allied Chem & Dye Corp | Preparation of rubber-containing bituminous macadam surfaces |
| US3253521A (en) * | 1960-03-16 | 1966-05-31 | Goodyear Tire & Rubber | Flexible paving composition |
| US3230103A (en) * | 1963-05-16 | 1966-01-18 | Corson G & W H | Non-plastic composition containing pozzolan, lime and blast furnace slag |
| US3891585A (en) * | 1966-10-21 | 1975-06-24 | Charles H Mcdonald | Elastomeric pavement repair composition for pavement failure and a method of making the same |
| US4069182A (en) * | 1966-10-21 | 1978-01-17 | Mcdonald Charles H | Elastomeric pavement repair composition |
| US3930100A (en) * | 1966-10-21 | 1975-12-30 | Charles H Mcdonald | Elastomeric cold patch for pavement repair |
| US3948830A (en) * | 1973-10-09 | 1976-04-06 | James H. Donnelly | Pozzolanic material-based coating and structural composition and method for forming |
| US4021393A (en) * | 1975-10-14 | 1977-05-03 | Mcdonald Charles H | Method and composition for surfacing and repairing broken pavements with an elastomeric material having improved flexing properties at freezing temperatures without any significant loss of viscosity at high application temperatures |
| US4113401A (en) * | 1976-05-05 | 1978-09-12 | Mcdonald Charles H | Method of pavement repair |
| US4369054A (en) * | 1978-02-17 | 1983-01-18 | Shinholster Jr Leavie J | Fiber/slag composition |
| DE2965087D1 (en) * | 1978-02-23 | 1983-05-05 | Revertex Chem Ltd | Ethylene copolymer compositions, process for the preparation and use thereof |
| US4404311A (en) * | 1981-08-10 | 1983-09-13 | Monsanto Company | Novel compounds and their use in elastomer-containing compositions |
| DK8504588A (en) * | 1982-03-01 | 1987-04-09 | ||
| US4430463A (en) * | 1982-09-15 | 1984-02-07 | Michigan Hanger | Acrylic polymer Portland cement coating composition |
| US4547399A (en) * | 1983-03-28 | 1985-10-15 | W. R. Meadows, Inc. | Sealing composition and method of making the same |
| US4564310A (en) * | 1984-06-08 | 1986-01-14 | Edmund Thelen | Resilient paving composition for playfields sports fields and recreation areas |
| CN1004137B (en) * | 1985-10-15 | 1989-05-10 | 凯姆克里特国际公司 | Method for making high strength modified asphalt paving composition |
| GB8623745D0 (en) * | 1986-10-03 | 1986-11-05 | Redland Technology Ltd | Cementitious compositions |
-
1991
- 1991-03-13 US US07/668,923 patent/US5244304A/en not_active Expired - Fee Related
-
1992
- 1992-03-03 CA CA 2062219 patent/CA2062219A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013078675A1 (en) * | 2011-12-02 | 2013-06-06 | Dow Global Technologies Llc | Rubber powder modified tile grout |
| CN112694304A (en) * | 2020-12-24 | 2021-04-23 | 山东省交通科学研究院 | Cold recycling and old asphalt pavement cold joint adhesive for pavement reconstruction and extension |
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|---|---|
| US5244304A (en) | 1993-09-14 |
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|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |