CN101913794A - Cement mortar saltpetering inhibition additive - Google Patents
Cement mortar saltpetering inhibition additive Download PDFInfo
- Publication number
- CN101913794A CN101913794A CN2010102526329A CN201010252632A CN101913794A CN 101913794 A CN101913794 A CN 101913794A CN 2010102526329 A CN2010102526329 A CN 2010102526329A CN 201010252632 A CN201010252632 A CN 201010252632A CN 101913794 A CN101913794 A CN 101913794A
- Authority
- CN
- China
- Prior art keywords
- saltpetering
- cement mortar
- inhibition
- mortar
- additive
- 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.)
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/21—Efflorescence resistance
Abstract
The invention provides a cement mortar saltpetering inhibition additive capable of obviously inhibiting mortar saltpetering, comprising the following materials in percentage by weight: 75%-90% of high-activity mineral fillers, 3%-5% of complexing resin and 10%-15% of additives. The invention enhances the mortar compactness and consumes the free calcium ions by reacting the high-activity mineral fillers with redundant calcium hydroxide contained in cement hydration products, constraints the early calcium ion migration by adding the complexing resin, reduces the water absorption quantity of mortar by adding a water-repelling agent, a defoaming agent, a superplasticizer, and the like, decreases the carriers for the calcium ion migration and effectively inhibits the saltpetering forming conditions, thereby achieving the effect of inhibiting the cement mortar saltpetering; and in addition, the cement mortar saltpetering inhibition additive has excellent performance, reasonable formula and low cost and can be used for preparing better cement mortar which is difficult to generate the saltpetering and be suitable for the decoration of inner and outer walls of common residences or plants.
Description
Technical field
The present invention relates to a kind of additive, especially a kind ofly be used for the cement mortar saltpetering inhibition additive that sand-cement slurry can obviously suppress the sand-cement slurry accumulation of salt in the surface soil.
Background technology
Sand-cement slurry is formulated by suitable proportion by cement, fine aggregate (claiming fine aggregate again), water etc., because the hydrated product calcium hydroxide of cement is dissolved in attached to forming Ca in the water film on the hole wall
2+And OH
-CO2 gaseous diffusion in the atmosphere and is dissolved in the above-mentioned same water film in hole, and part forms carbonic acid (H
2CO
3), the neutralization reaction between calcium hydroxide and the carbonic acid has formed dissolved CaCO hardly
3Precipitation forms the accumulation of salt in the surface soil.The accumulation of salt in the surface soil has a strong impact on the organoleptic quality of sand-cement slurry, special in colored motar that is used for decoration of exterior wall and tile grout etc., the surface accumulation of salt in the surface soil is separated out bloom and is made that the finishing material color and luster is unglazed, pattern is impaired and be difficult to and repair, Biao Mian decorative effect just reduces greatly like this, influence attractive in appearancely, do not reach the effect of design.The process that forms from the accumulation of salt in the surface soil as can be seen, form the accumulation of salt in the surface soil and must possess following three conditions: it (mainly is Ca that the salt of solubility is arranged in (1) mortar
2+) exist; (2) soluble salt is arranged to the required carrier of surface transport in the mortar; (3) have the passage of soluble salt to surface transport in the mortar, any one that solves in above three conditions can fundamentally suppress the generation of the accumulation of salt in the surface soil.
In the prior art, Chinese patent CN101475354A, open day is on July 8th, 2009, proposed " a kind of anti-crystalline bloom exterior wall facing mortar ", this mortar is to adopt high-alumina cement, gypsum, sand and additive be mixing and stirring and obtaining by a certain percentage, used components of additives and weight percent are hydrophobic type rubber powder 75-90, wood fibre 8-15, nano level hydrophobizing agent 2-10.Because high-alumina cement does not produce calcium hydroxide when aquation, and suitable additive makes the facing mortar voidage of formation low, the aperture is little, the approach of salts solution migration significantly reduces, and fundamentally eliminates the condition that the accumulation of salt in the surface soil produces, and this anti-crystalline bloom exterior wall facing mortar is made sample and observed through the open air, experience several months wind and rain, all do not have accumulation of salt in the surface soil phenomenon and occur, but should interpolation property cost height, the generally decoration of only suitable high-end residential and villa exterior wall.
Summary of the invention
In order to overcome the problem of above existence, the purpose of this invention is to provide a kind of new mortar and suppressed accumulation of salt in the surface soil additive, this additive improves the sand-cement slurry structure to be formed, and can obviously suppress sand-cement slurry accumulation of salt in the surface soil phenomenon.
The technical solution adopted in the present invention is a kind of cement mortar saltpetering inhibition additive, it is characterized in that: described cement mortar saltpetering inhibition additive comprises following component and weight proportion:
High-activity mineral filler 75-90%,
Complexing resin 3-5%,
Additive 10-15%.
According to another preferred embodiment, a kind of cement mortar saltpetering inhibition additive comprises that further described high-activity mineral filler is the metakaolin with high pozzolanic activity.
According to another preferred embodiment, a kind of cement mortar saltpetering inhibition additive comprises that further activated alumina in the described metakaolin, active silica total content are 95-100%, and the fineness of described metakaolin is more than or equal to 2500 orders.
According to another preferred embodiment, a kind of cement mortar saltpetering inhibition additive comprises that further described complexing resin is one or more in carboxylic-acid resin, the phosphoric acid resinoid.
According to another preferred embodiment, a kind of cement mortar saltpetering inhibition additive further comprise described additive comprise hydrophober is arranged, defoamer and superplasticizer.
According to another preferred embodiment, a kind of cement mortar saltpetering inhibition additive comprises further in the described additive that the weight percent of hydrophober, defoamer and superplasticizer is hydrophober 40-50, defoamer 25-35, superplasticizer 20-30.
According to another preferred embodiment, a kind of cement mortar saltpetering inhibition additive comprises that further described hydrophober is that the content of organosilicon radical is the 25-50% organosilicon moisture repellent.
According to another preferred embodiment, a kind of cement mortar saltpetering inhibition additive comprises that further described defoamer is the water-soluble powder defoamer.
According to another preferred embodiment, a kind of cement mortar saltpetering inhibition additive comprises that further described superplasticizer is a high-efficiency water-reducing agent of poly-carboxylic acid.
The invention has the beneficial effects as follows:
1, cement mortar saltpetering inhibition additive of the present invention, main ingredient is the high-activity mineral filler, this active material main component is the amorphous silicon aluminum compound that is in the steady state that is situated between, contain a large amount of activated aluminas and active silica, can with the hydrated product calcium hydroxide reaction of cement, different with active admixture with calcium hydroxide ratio and temperature of reaction, can produce different hydrated products, comprise Calucium Silicate powder, the aquation gehlenite, aquation aluminic acid four calcium, aquation tricalcium aluminate etc., consume hydrated cementitious product calcium hydroxide on the one hand, promoted the carrying out of hydration reaction, quickened hydrated cementitious, accelerate time of coagulation, effectively fixing calcium ion prevents calcium ion to surface transport on the other hand, and this material and calcium hydroxide reaction generate water-fast hydrated product in addition, stop up hole, reduce the porosity of mortar, improve the pore structure of mortar, reduce the passage of calcium ion to external migration, because above several points, the condition that the accumulation of salt in the surface soil forms is effectively suppressed.
2, in order to prevent free calcium ions that the cement early response produces to surface transport, the present invention adopts the interpolation complexing resin, and complexing calcium ions increases molecular particle size and weight, and the constraint free calcium ions effectively reduces calcium ion to surface transport, suppresses the accumulation of salt in the surface soil.
3, the present invention also adopts and adds hydrophober, defoamer, superplasticizer, reduces sand-cement slurry porosity and water-intake rate, reduces the passage and the carrier of calcium ion migration, effectively suppresses the accumulation of salt in the surface soil.
4, cement mortar saltpetering inhibition additive of the present invention mixes in the mortar, presses JC/T 1024-2007 standard-required, by anti-accumulation of salt in the surface soil test, and after 21 damp and hot circulations, no accumulation of salt in the surface soil phenomenon.This additive can also obviously improve water regain, the intensity of mortar.
Embodiment
The present invention is further detailed explanation in conjunction with the preferred embodiments now.
Embodiment 1
Below prescription has added and added cement mortar saltpetering inhibition additive in sand-cement slurry, and compares with the addition of different cement mortar saltpetering inhibition additives.
1, prescription
| Former material title | 1# | 2# | 3# |
| P.042.5 cement | 300g | 300g | 300g |
| Fine aggregate | 699.5g | 679.5g | 659.5g |
| Ether of cellulose | 0.5g | 0.5g | 0.5g |
| Cement mortar saltpetering inhibition additive | 0g | 20g | 40g |
| Add up to | 1000g | 1000g | 1000g |
2, system test specimen and experimental observation
Each component of above-mentioned 1#, 2#, 3# prescription is mixed, add 16% water respectively, stir, by standard JC/T 1024-2007 preparation test test specimen with stirrer.After the round-robin test, add cement mortar saltpetering inhibition additive after, the layer accumulation of salt in the surface soil that the 1# prescription is obtained is serious, the 2# prescription obtains is coated with a small amount of accumulation of salt in the surface soil of stratification, the coating that the 3# prescription obtains does not have the accumulation of salt in the surface soil.This shows the consumption of cement mortar saltpetering inhibition additive, the anti-accumulation of salt in the surface soil of coating is had important effect.
Embodiment 2
1, prescription
Below the prescription cement mortar saltpetering inhibition additive in no high-activity mineral filler
| Former material title | 4# |
| P.042.5 cement | 300g |
| Fine aggregate | 694.5g |
| Ether of cellulose | 0.5g |
| Cement mortar saltpetering inhibition additive | 5g |
| Add up to | 1000g |
2, system test specimen and experimental observation
Each component of above-mentioned 4# prescription is mixed, add 16% water, stir, by standard JC/T 1024-2007 preparation test test specimen with stirrer.After the round-robin test, the coating that the 4# prescription obtains has the more accumulation of salt in the surface soil, shows that the high-activity mineral filler has material impact to improving the accumulation of salt in the surface soil.
Embodiment 3
1, prescription
Below there is not complexing resin in the prescription cement mortar saltpetering inhibition additive
| Former material title | 5# |
| P.042.5 cement | 300g |
| Fine aggregate | 661.5g |
| Ether of cellulose | 0.5g |
| Cement mortar saltpetering inhibition additive | 38g |
| Add up to | 1000g |
2, system test specimen and experimental observation
Each component of above-mentioned 5# prescription is mixed, add 16% water, stir, by standard JC/T 1024-2007 preparation test test specimen with stirrer.After the round-robin test, the coating that the 5# prescription obtains has a small amount of accumulation of salt in the surface soil, shows that complexing resin has certain effect to improving the accumulation of salt in the surface soil.
It is main raw material that the present invention adopts high-activity mineral filler, complexing resin, be equipped with specialist additive and mix back formation cement mortar saltpetering inhibition additive, and definite 3# prescription (volume 4%) is an optimization formula.The mortar performance of 1#, 3# prescription is tested, and every performance is as follows:
| Performance | 1# | 3# |
| 30min water regain/g | 4.56 | 1.21 |
| 240min water regain/g | 9.86 | 2.52 |
| Folding strength/MPa | 5.2 | 5.5 |
| Ultimate compression strength/MPa | 19.8 | 21.5 |
| The accumulation of salt in the surface soil | The accumulation of salt in the surface soil is serious | The no accumulation of salt in the surface soil |
As seen from the above table, cement mortar saltpetering inhibition additive of the present invention can obviously suppress the mortar accumulation of salt in the surface soil, can obviously reduce the mortar water regain in addition, improves mortar strength, and excellent performance, prescription are rationally.
With above-mentioned foundation desirable embodiment of the present invention is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.The technical scope of this invention is not limited to the content on the specification sheets, must determine its technical scope according to the claim scope.
Claims (9)
1. cement mortar saltpetering inhibition additive, it is characterized in that: described cement mortar saltpetering inhibition additive comprises following component and weight proportion:
High-activity mineral filler 75-90%,
Complexing resin 3-5%,
Additive 10-15%.
2. cement mortar saltpetering inhibition additive according to claim 1 is characterized in that: described high-activity mineral filler is the metakaolin with high pozzolanic activity.
3. cement mortar saltpetering inhibition additive according to claim 2 is characterized in that: activated alumina, active silica total content are 95-100% in the described metakaolin, and the fineness of described metakaolin is more than or equal to 2500 orders.
4. cement mortar saltpetering inhibition additive according to claim 1 is characterized in that: described complexing resin is one or more in carboxylic-acid resin, the phosphoric acid resinoid.
5. cement mortar saltpetering inhibition additive according to claim 1 is characterized in that: described additive comprises hydrophober, defoamer and superplasticizer.
6. cement mortar saltpetering inhibition additive according to claim 5 is characterized in that: in the described additive, hydrophober, the weight percent of defoamer and superplasticizer are hydrophober 40-50, defoamer 25-35, superplasticizer 20-30.
7. according to claim 5 or 6 described cement mortar saltpetering inhibition additives, it is characterized in that: described hydrophober is that the content of organosilicon radical is the 25-50% organosilicon moisture repellent.
8. according to claim 5 or 6 described cement mortar saltpetering inhibition additives, it is characterized in that: described defoamer is the water-soluble powder defoamer.
9. according to claim 5 or 6 described cement mortar saltpetering inhibition additives, it is characterized in that: described superplasticizer is a high-efficiency water-reducing agent of poly-carboxylic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102526329A CN101913794A (en) | 2010-08-13 | 2010-08-13 | Cement mortar saltpetering inhibition additive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102526329A CN101913794A (en) | 2010-08-13 | 2010-08-13 | Cement mortar saltpetering inhibition additive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101913794A true CN101913794A (en) | 2010-12-15 |
Family
ID=43321476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102526329A Pending CN101913794A (en) | 2010-08-13 | 2010-08-13 | Cement mortar saltpetering inhibition additive |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013097138A1 (en) * | 2011-12-29 | 2013-07-04 | Dow Global Technologies Llc | Low efflorescence tile grout composition |
| CN103342525A (en) * | 2013-07-24 | 2013-10-09 | 嘉宝莉化工集团股份有限公司 | Waterproof and decorative dry powder mortar and coating process for same |
| CN104446234A (en) * | 2014-11-11 | 2015-03-25 | 黄美忠 | Alkali-efflorescence-free high-waterproofness dry-powder tile joint mixture |
| CN105503031A (en) * | 2015-12-30 | 2016-04-20 | 卓达新材料科技集团威海股份有限公司 | Alkali inhibitor used for ordinary Portland cement |
| CN105503030A (en) * | 2015-12-30 | 2016-04-20 | 卓达新材料科技集团威海股份有限公司 | Alkali inhibitor used for ordinary Portland cement |
| CN106007454A (en) * | 2016-05-30 | 2016-10-12 | 江苏名和集团有限公司 | Concrete antalkaline agent |
| CN107651879A (en) * | 2017-10-30 | 2018-02-02 | 李建连 | A kind of cement accumulation of salt in the surface soil inhibitor |
| CN107867808A (en) * | 2016-09-26 | 2018-04-03 | 郭太宗 | Cement-based material presses down alkali reinforcing agent |
| CN108558264A (en) * | 2018-05-21 | 2018-09-21 | 成都建工预筑科技有限公司 | A kind of antalkaline |
| CN108929061A (en) * | 2018-07-31 | 2018-12-04 | 济南大学 | A kind of alkali-excited cement accumulation of salt in the surface soil inhibitor and preparation method thereof |
| CN109516709A (en) * | 2017-09-19 | 2019-03-26 | 郭太宗 | Pervious concrete presses down alkali additive |
| CN111995344A (en) * | 2020-08-26 | 2020-11-27 | 亚士创能科技（滁州）有限公司 | Decorative mortar and application thereof |
| CN112279547A (en) * | 2020-11-09 | 2021-01-29 | 漳州庆铭工艺品有限公司 | Composition solution and method for removing surface crystals of low-alkali sulphoaluminate cement product |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9776918B2 (en) | 2011-12-29 | 2017-10-03 | Dow Global Technologies Llc | Low efflorescence tile grout composition |
| EP2776376A4 (en) * | 2011-12-29 | 2015-11-04 | Dow Global Technologies Llc | Low efflorescence tile grout composition |
| WO2013097138A1 (en) * | 2011-12-29 | 2013-07-04 | Dow Global Technologies Llc | Low efflorescence tile grout composition |
| CN103342525A (en) * | 2013-07-24 | 2013-10-09 | 嘉宝莉化工集团股份有限公司 | Waterproof and decorative dry powder mortar and coating process for same |
| CN103342525B (en) * | 2013-07-24 | 2015-03-11 | 广东嘉宝莉科技材料有限公司 | Waterproof and decorative dry powder mortar and coating process for same |
| CN104446234A (en) * | 2014-11-11 | 2015-03-25 | 黄美忠 | Alkali-efflorescence-free high-waterproofness dry-powder tile joint mixture |
| CN105503031B (en) * | 2015-12-30 | 2018-01-30 | 卓达新材料科技集团威海股份有限公司 | A kind of suppression alkaline agent for Portland cement |
| CN105503030A (en) * | 2015-12-30 | 2016-04-20 | 卓达新材料科技集团威海股份有限公司 | Alkali inhibitor used for ordinary Portland cement |
| CN105503030B (en) * | 2015-12-30 | 2018-01-30 | 卓达新材料科技集团威海股份有限公司 | A kind of suppression alkaline agent for Portland cement |
| CN105503031A (en) * | 2015-12-30 | 2016-04-20 | 卓达新材料科技集团威海股份有限公司 | Alkali inhibitor used for ordinary Portland cement |
| CN106007454A (en) * | 2016-05-30 | 2016-10-12 | 江苏名和集团有限公司 | Concrete antalkaline agent |
| CN107867808A (en) * | 2016-09-26 | 2018-04-03 | 郭太宗 | Cement-based material presses down alkali reinforcing agent |
| CN109516709A (en) * | 2017-09-19 | 2019-03-26 | 郭太宗 | Pervious concrete presses down alkali additive |
| CN107651879A (en) * | 2017-10-30 | 2018-02-02 | 李建连 | A kind of cement accumulation of salt in the surface soil inhibitor |
| CN107651879B (en) * | 2017-10-30 | 2020-12-15 | 四川宇砼建材有限公司 | Cement whiskering inhibitor |
| CN108558264A (en) * | 2018-05-21 | 2018-09-21 | 成都建工预筑科技有限公司 | A kind of antalkaline |
| CN108929061A (en) * | 2018-07-31 | 2018-12-04 | 济南大学 | A kind of alkali-excited cement accumulation of salt in the surface soil inhibitor and preparation method thereof |
| CN111995344A (en) * | 2020-08-26 | 2020-11-27 | 亚士创能科技（滁州）有限公司 | Decorative mortar and application thereof |
| CN111995344B (en) * | 2020-08-26 | 2022-05-27 | 亚士创能科技（滁州）有限公司 | Decorative mortar and application thereof |
| CN112279547A (en) * | 2020-11-09 | 2021-01-29 | 漳州庆铭工艺品有限公司 | Composition solution and method for removing surface crystals of low-alkali sulphoaluminate cement product |
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