CN100494110C - Anti-cracking agent for mortar - Google Patents
Anti-cracking agent for mortar Download PDFInfo
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- CN100494110C CN100494110C CNB200610025870XA CN200610025870A CN100494110C CN 100494110 C CN100494110 C CN 100494110C CN B200610025870X A CNB200610025870X A CN B200610025870XA CN 200610025870 A CN200610025870 A CN 200610025870A CN 100494110 C CN100494110 C CN 100494110C
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- mortar
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- 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
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
Disclosed is a mortar anti-cracking agent comprising the following constituents (by weight percent): coal ash 55-65%, water-soluble polymer 20-30%, plumping agent 5-15%, polypropylene fiber 2-4%, cellulose ether 1-3%, wherein the grade I coal ash can serve as the carrying agent, the modified polymer can form a layer of elastic membrane onto the surface of the motar.
Description
Technical field
What the present invention relates to is a kind of product of building material technical field, and specifically, what relate to is a kind ofly to be used to build light wall material by laying bricks or stones or to wipe one's face thereon to avoid screed to produce the anti-cracking agent for mortar of cracking and hollowing.
Background technology
Along with country advances the restriction of sintered common clay brick use and the system of building energy conservation work, some novel light wall materials continue to bring out, as air-entrained concrete building block, concrete hollow block, fly ash building block, sand aerated-block, structural clay tile etc.These light wall materials are when building by laying bricks or stones and wipe one's face, because a large amount of holes is contained in its inside, be easy to water in masonry mortar or the plastering mortar is absorbed, thereby water retentivity of mortar is reduced, cause the workability variation of mortar, these light wall materials shrinkage strain in use simultaneously is bigger, is easy to make the mortar of wiping one's face cracking and hollowing to occur, thereby influences the outward appearance and the weather resistance of buildings.Therefore, improve the water-retentivity of mortar, anti-cracking and hollowing ability seem very important and urgent.
Find through literature search prior art, patent publication No.: CN1594194A, patent name: fiber-reinforced polymer modification anticracking grout, this patent has proposed infitration type elastic water-proof curing fluid capable is applied to the screed of being made up of functional materials such as cement, sand, inorganic mineral powder, alkali proof fiber, volume stabilizer, this property agent of polymkeric substance, utilize curing fluid capable to be penetrated in the pore of screed inside, form crack-resistant layer.This mortar has solved its cracking problem, but hollowing does not have the fine solution of energy, and it has certain restriction on the mortar starting material are selected in addition, promotes thereby be difficult to big area in engineering is used.Also find in the retrieval, patent publication No.: CN1569725A, patent name: a kind of cracking-resistant cement mortar, this patent have proposed to mix the hard polyurethane foam particle in sand-cement slurry, utilize hard polyurethane foam particulate snappiness and gross distortion, improve its resistance to cleavage.But be difficult to from existing literature find out that it can improve the splitting resistance of mortar and the characteristic of anti-hollowing effectively.In addition, this type of cracking-resistant cement mortar more just the wiping one's face and be incubated when handling and use of external wall, is difficult to use in the light wall material masonry project.
Summary of the invention
The objective of the invention is to provides a kind of anti-cracking agent for mortar at having deficiency and defective in the prior art, promptly directly is spiked into ordinary mortar by a certain percentage to change the adulterant of its water-retentivity and cracking resistance hollowing ability.Make it solve above-mentioned deficiency in the background technology.
The present invention is achieved by the following technical solutions, and each component of the present invention and weight percent thereof are:
Flyash 55～65%
Water-soluble polymers 20～30%
Swelling agent 5～15%
Polypropylene fibre 2～4%
Ether of cellulose 1～3%
Described flyash is selected the I level flyash that meets GB1596-91 for use, and its fineness (the 0.045mm square hole sieve tails over %) is not more than 12, and water requirement is not more than 95%, burns vector and is not more than 5%, and sulphur trioxide is not more than 3%, and water content is not more than 1%.On the one hand, the glass microballon of I level flyash can improve the workability of mortar mix effectively, and on the other hand, the high reactivity of I level flyash and fine particle can improve the intensity of mortar effectively.Adopt flyash can also greatly reduce cost, reduce environmental pollution, effectively utilize refuse.
Described water-soluble polymers is aqueous silane or silicone emulsion.After the modification processing, itself and cement have good consistency, and can form one deck elastica on the sand-cement slurry surface after the sclerosis.
Described swelling agent produces volumetric expansion by chemical reaction, thereby makes the drying shrinkage of mortar be compensated and make mortar more closely knit for mixing non-bleed type swelling agent calcium aluminate class.The volume of swelling agent should be controlled at the drying shrinkage that can compensate mortar and the expansible scope is arranged slightly, and its volume is generally 5～15%.
Described polypropylene fibre, its length generally is controlled at 5～15mm, and diameter is 30～50um.By random in the mortar of polypropylene fibre after sclerosis, improve the cracking resistance and the hollowing ability of mortar to distribution.
Described ether of cellulose, a kind of ether of cellulose commonly used that can improve water retentivity of mortar of selling on the market.
The present invention claims required flyash, water-soluble polymers solid, swelling agent, polypropylene fibre and the ether of cellulose got by formula rate, stirs in stirrer, forms product, packs.The present invention utilizes I level flyash as carrier, improve its anti-hollowing ability by mixing water-soluble polymers with the interfacial adhesion that increases ordinary mortar, utilize the early expansion of swelling agent and polypropylene fibre to avoid cracking to improve the shrinkage behind the mortar hardening, improve mortar by mixing of ether of cellulose simultaneously and mix and stir water-retentivity in the process, make prepared ordinary mortar have excellent cracking resistance and anti-hollowing ability, satisfy and build some light wall materials by laying bricks or stones and finish the engineering of wiping one's face on its surface.The present invention adopts powder material commonly used to realize high cracking resistance of ordinary mortar and high anti-hollowing ability.
The invention has the advantages that: use the routine building material, it is extensive to have raw material sources, the advantage that cost is low; In starting material, adopt flyash as carrier, be utilization of waste material on the one hand, can reduce pollution and minimizing cement consumption, save energy, in addition on the one hand environment, adding coal ash utilizes its glass microballon effect, improve the mix flowability, reduce the chemical admixture volume, reduce cost, I level flyash has good micro-aggregate and active effect simultaneously, intensity and density after significantly improving water retentivity of mortar and hardening.Packed bags with on-spot is mixed and stirred, and is easy and simple to handle, uses widely, reduces cost of labor; Reach compensation and the effect of microdilatancy is arranged slightly by the non-bleed type of admixture swelling agent, make mortar after the sclerosis have the characteristics of high cracking resistance, anti-hollowing and high cohesive force and stability, water-retentivity is good.
Embodiment
Provide following examples in conjunction with content of the present invention:
Anti-cracking agent for mortar is mixed by a certain percentage by I level flyash, water-soluble modified polymkeric substance, swelling agent, polypropylene fibre and ether of cellulose to be formed after mixing and stirring, and according to the engineering application need, by adjusting the invention prescription, can obtain needed performance.
Embodiment 1
Each component of present embodiment anti-cracking agent for mortar with and weight percent be:
I level flyash 55
Aqueous silane 25%
Calcium aluminate class swelling agent 15%
Polypropylene fibre 2%
Ether of cellulose 3%
Said components gets anti-cracking agent for mortar by aforementioned prepared, itself and cement, sand mixed and stirred in following ratio be prepared into anticracking grout, cement: sand: anti-fissuring agent is 1:4:0.08 (for mass ratio), and in the processing of wiping one's face of certain external wall, this external wall materials for wall adds the aerated concrete building block for steaming to press, investigate through year, cracking, hollowing phenomenon do not appear in whole metope.
Embodiment 2
Each component of present embodiment anti-cracking agent for mortar with and weight percent be:
I level flyash 65%
Aqueous silane 20%
Calcium aluminate class swelling agent 10%
Polypropylene fibre 4%
Ether of cellulose 1%
The anti-cracking agent for mortar that said components gets by aforementioned prepared, itself and cement, sand mixed and stirred in following ratio be prepared into anticracking grout, cement: sand: anti-fissuring agent is 1:5:0.10 (for mass ratio), and in the processing of wiping one's face of certain inner wall of building, this inner wall of building materials for wall is that flyash adds the aerated concrete building block, through 8 months times observation, cracking, hollowing phenomenon did not appear in whole metope.
Embodiment 3
Each component of present embodiment anti-cracking agent for mortar with and weight percent be:
I level flyash 60%
Aqueous silane 30%
Calcium aluminate class swelling agent 5%
Polypropylene fibre 3%
Ether of cellulose 2%
The anti-cracking agent for mortar that said components gets by aforementioned prepared, with itself and cement,, lime putty, sand mix and stir in following ratio and be prepared into anticracking grout, cement: lime putty: sand: anti-fissuring agent is 1:0.3:5:0.10 (for mass ratio), and in the processing of wiping one's face of certain inner wall of building, this inner wall of building materials for wall adds the aerated concrete building block for steaming to press, through the time observation in 1 year, cracking, hollowing phenomenon did not appear in whole metope.
Claims (3)
1, a kind of anti-cracking agent for mortar is characterized in that, each component and weight percent thereof are:
I level flyash 55～65%
Aqueous silane or silicone emulsion 20～30%
Calcium aluminate class swelling agent 5～15%
Polypropylene fibre 2～4%
Ether of cellulose 1～3%.
2, anti-cracking agent for mortar according to claim 1 is characterized in that, described I level flyash, its fineness tails over % smaller or equal to 12 so that 0.045mm side is empty, and water requirement is burnt vector smaller or equal to 5% smaller or equal to 95%, sulphur trioxide is smaller or equal to 3%, and water content is smaller or equal to 1%.
3, anti-cracking agent for mortar according to claim 1 is characterized in that, described polypropylene fibre, and its length dimension is controlled at 5～15mm, and diameter is 30～50um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610025870XA CN100494110C (en) | 2006-04-20 | 2006-04-20 | Anti-cracking agent for mortar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610025870XA CN100494110C (en) | 2006-04-20 | 2006-04-20 | Anti-cracking agent for mortar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1844023A CN1844023A (en) | 2006-10-11 |
| CN100494110C true CN100494110C (en) | 2009-06-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610025870XA Active CN100494110C (en) | 2006-04-20 | 2006-04-20 | Anti-cracking agent for mortar |
Country Status (1)
| Country | Link |
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| CN (1) | CN100494110C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514086B (en) * | 2009-03-16 | 2011-11-16 | 宋英 | Mortar or concrete crack-resisting reinforcing agent |
| CN102030492A (en) * | 2010-11-03 | 2011-04-27 | 金树青 | Anti-cracking agent for plastic shrinkage cracks of pumping concrete |
| CN102674738B (en) * | 2012-05-09 | 2014-06-18 | 江苏苏博特新材料股份有限公司 | Multifunctional anti-crack additive |
| CN103342503B (en) * | 2013-06-26 | 2014-09-10 | 俞锡贤 | Masonry plastering anticracking agent |
| CN105503063A (en) * | 2015-12-30 | 2016-04-20 | 卓达新材料科技集团威海股份有限公司 | Anti-crack agent used for Portland cement fiberboards |
| CN105439493A (en) * | 2015-12-30 | 2016-03-30 | 卓达新材料科技集团威海股份有限公司 | Anti-cracking agent used for ordinary cement-fiber board |
| CN107902949A (en) * | 2017-11-09 | 2018-04-13 | 安徽艾米伦特建材科技有限公司 | Plastering mortar anti-cracking agent and preparation method thereof |
| CN108793819B (en) * | 2018-07-23 | 2020-12-29 | 中建商品混凝土广西有限公司 | Composite concrete anti-cracking agent and preparation method thereof |
-
2006
- 2006-04-20 CN CNB200610025870XA patent/CN100494110C/en active Active
Non-Patent Citations (4)
| Title |
|---|
| [收稿日期] 2005 - 10 - 22聚丙烯纤维、膨胀剂及粉煤灰三掺在抗裂防渗混凝土工程中的应用. 周庆刚.混凝土，第12期. 2005 |
| [收稿日期] 2005 - 10 - 22聚丙烯纤维、膨胀剂及粉煤灰三掺在抗裂防渗混凝土工程中的应用. 周庆刚.混凝土，第12期. 2005 * |
| 聚丙烯纤维、膨胀剂、减水剂、防水剂和掺合料在应用上的区别. 李美利.河南科学，第22卷第6期. 2004 |
| 聚丙烯纤维、膨胀剂、减水剂、防水剂和掺合料在应用上的区别. 李美利.河南科学，第22卷第6期. 2004 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1844023A (en) | 2006-10-11 |
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Owner name: MEICHAO GROUP STOCK CO., LTD. Free format text: FORMER OWNER: SHANGHAI JIAOTONG UNIV. Effective date: 20091016 |
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Effective date of registration: 20091016 Address after: Beijing City, Daxing District Yinghai Town Township South Road No. 5 Patentee after: MEICHAO GROUP CO., LTD. Address before: No. 800, Dongchuan Road, Shanghai, Minhang District Patentee before: Shanghai Jiao Tong University |
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Address after: 100076 Beijing City, Daxing District Ying yuan Yinghai Town Street No. 6 Patentee after: MEICHAO GROUP CO., LTD. Address before: 100076 Beijing city Daxing District Yinghai Town Township South Road No. 5 Patentee before: MEICHAO GROUP CO., LTD. |