Anti-crack cement mortar

A technology of cement mortar and polymer, applied in the field of cement mortar, can solve problems such as hollowing and cracks, achieve the effects of increasing crack resistance, enhancing water retention performance, and improving hardness

Inactive Publication Date: 2017-12-01
河南胜泽建筑保温工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only can it solve the cracks and hollowing of the cement mortar surface, but it is also environmentally friendly and does not contain harmful substances

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] An anti-cracking cement mortar is characterized in that, in parts by weight, it comprises the following components:

[0020] 50 parts of perlite, 4 parts of bentonite, 6 parts of sepiolite, 15 parts of slag powder, 5 parts of cement, 3 parts of aluminum phosphate, 4 parts of polyvinyl alcohol, 0.3 part of methyl cellulose ether, 0.1 part of urea, polypropylene fiber 5 parts, high viscosity hydroxypropyl methylcellulose 0.14 parts, low viscosity hydroxypropyl methylcellulose 0.16 parts.

[0021] The above components are obtained according to conventional cement mortar preparation methods.

[0022] The test of the anti-cracking cement mortar described in this example refers to the test method of "Basic Performance Test Methods of Building Mortar" JGJ / T70-2009, and the basic performance test results are shown in the table below.

[0023] The anti-cracking cement mortar test result of table 1 embodiment 1

[0024] performance

Embodiment 2

[0026] An anti-cracking cement mortar is characterized in that, in parts by weight, it comprises the following components:

[0027] 70 parts of perlite, 9 parts of bentonite, 10 parts of sepiolite, 25 parts of slag powder, 20 parts of cement, 8 parts of aluminum phosphate, 8 parts of styrene-acrylic emulsion, 0.5 part of ethyl cellulose ether, 0.5 part of urea, polypropylene fiber 10 parts, high viscosity hydroxypropyl methylcellulose 0.4 parts, low viscosity hydroxypropyl methylcellulose 0.6 parts.

[0028] The above components are obtained according to conventional cement mortar preparation methods.

[0029] The test of the anti-cracking cement mortar described in this example refers to the test method of "Basic Performance Test Methods of Building Mortar" JGJ / T70-2009, and the basic performance test results are shown in the table below.

[0030] The anti-cracking cement mortar test result of table 2 embodiment 2

[0031] performance

Embodiment 3

[0033] An anti-cracking cement mortar is characterized in that, in parts by weight, it comprises the following components:

[0034] 60 parts of perlite, 5 parts of bentonite, 7 parts of sepiolite, 15 parts of slag powder, 10 parts of cement, 4 parts of aluminum phosphate, 4 parts of polyvinyl alcohol, 0.4 part of methyl cellulose ether, 0.2 part of urea, polypropylene fiber 6 parts, high viscosity hydroxypropyl methylcellulose 0.23 parts, low viscosity hydroxypropyl methylcellulose 0.27 parts.

[0035] The above components are obtained according to conventional cement mortar preparation methods.

[0036] The test of the anti-cracking cement mortar described in this example refers to the test method of "Basic Performance Test Methods of Building Mortar" JGJ / T70-2009, and the basic performance test results are shown in the table below.

[0037] The anti-cracking cement mortar test result of table 3 embodiment 3

[0038] performance

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Abstract

The invention discloses an anti-crack cement mortar, which comprises the following ingredients in parts by weight: 50-70 parts of perlite, 4-9 parts of bentonite, 6-10 parts of sepiolite, 15-25 parts of slag powder, 5-20 parts of cement, 3-8 parts of aluminium phosphate, 4-8 parts of polymer, 0.3-0.5 part of cellulose ether, 0.1-0.5 part of urea, 5-10 parts of polymer fiber and 0.3-1 part of hydroxypropyl methyl cellulose. The perlite, the bentonite, sepiolite and the like and additive have a synergistic effect to lower the air shrinkage of the cement mortar so as to realize an anti-crack function, meanwhile, nontoxic substances, such as formaldehyde, are not used, so that the anti-crack cement mortar has a small influence on environment and conforms to the requirements of green products.

Description

technical field [0001] The invention relates to a cement mortar, in particular to an anti-cracking cement mortar. Background technique [0002] Cement is one of the most important building materials. At present, the widely used building surface in my country is cement mortar surface. However, this kind of building surface is often prone to quality problems such as cracks, hollowing, and sanding during construction. It does not meet the current needs of use. There are many reasons for cement mortar cracks. In addition to standardizing and improving the construction, proportioning, material selection, wall, etc., effective preventive measures can be taken from the cement itself to improve its quality and performance and reduce the drying shrinkage of the mortar. cracks, reduce shrinkage stress, and improve the crack resistance of mortar. At the same time, most of the adhesives used in cement mortar contain formaldehyde, such as 801 glue, 901 glue, etc., which pollute the envir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00
CPCC04B28/00C04B2111/34C04B2201/50C04B14/18C04B14/104C04B14/042C04B18/141C04B22/16C04B24/2623C04B24/126C04B16/0633C04B24/383C04B24/26
Inventor 马志涛
Owner 河南胜泽建筑保温工程有限公司
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