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Self-leveling terrace powder mortar composition

A technology of composition and dry powder, applied in the field of dry powder mortar composition, can solve the problems of screening, whitening on the surface of mortar, decrease in strength, etc., and achieve the effects of improving flexibility, stable strength and eliminating whitening

Active Publication Date: 2013-02-20
常熟市金龙装饰有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fundamental problem of self-leveling mortar is to solve the problems of late strength decline, whitening of the mortar surface and sand removal.

Method used

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  • Self-leveling terrace powder mortar composition
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  • Self-leveling terrace powder mortar composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Preparation of zeolite grafted redispersible latex powder:

[0053] a) Calculated by weight, add 5 parts of zeolite powder (particle size: 0.5um) to 40 parts of water, add acetic acid aqueous solution (the same below) with a concentration of 10% by weight to adjust the pH to 4, heat up to 50°C, and then add 1 part of hydroxyethyl ethyl cellulose and 0.5 part of polyvinylpyrrolidone with a weight-average molecular weight of 3000, and 2 parts of methacryloxypropyl triethoxysilane are made into bottom liquid;

[0054] b) Mix 10 parts of methyl methacrylate, 20 parts of (methyl) styrene, 20 parts of tertiary vinyl carbonate, and 1 part of butyl mercaptoacetate to make a mixed monomer, and then add 0.2 parts of allyl polyoxygen Vinyl ether ammonium sulfate, 0.2 parts of potassium persulfate and 10 parts of water are made into a mixed solution;

[0055] c) Take 5 parts of the mixed solution, 0.1 part of allyl polyoxyethylene ether ammonium sulfate, and 0.1 part of potassium ...

Embodiment 2

[0059] Preparation of zeolite grafted redispersible latex powder emulsion:

[0060] a) Calculated by weight, add 10 parts of zeolite powder (with a particle size of 1um) to 40 parts of water, add 10% aqueous acetic acid solution to adjust the pH to 5, heat up to 50°C, and then add 1 part of hydroxyethyl Ethyl cellulose and 0.5 parts of polyvinylpyrrolidone with a weight average molecular weight of 5000, and 2 parts of methacryloxypropyltriethoxysilane;

[0061] b) Mix 10 parts of ethyl methacrylate, 20 parts of methyl styrene, 20 parts of vinyl tertiary carbonate and 1 part of molecular weight modifier mercaptoethanol to make a mixed monomer, take 50 parts of the mixed monomer and add 0.2 parts Allyl polyoxyethylene ether, 0.2 parts of sodium persulfate and 10 parts of water are made into a mixed solution;

[0062] c) Take 5 parts of the mixed solution, 0.1 part of allyl polyoxyethylene ether and 0.1 part of sodium persulfate, add them to the bottom liquid prepared in step a)...

Embodiment 3

[0067] 300 parts of ordinary portland cement (42.5), 100 parts of aluminate cement, 400 parts of quartz sand (70-140 mesh) 140 parts of heavy calcium carbonate (200-350 mesh), 10 parts of anhydrite, the 40 parts of zeolite grafted redispersible latex powder, 10 parts of zeolite powder, 6 parts of water reducer (polycarboxylate high-efficiency water reducer, Suzhou Xingbang Chemical Building Materials Co., Ltd., the product of brand SUNBOPC-1030, the same below), disinfectant 2 parts of foaming agent (Hangzhou Haichuan Chemical Co., Ltd., brand D-801, the same below), 1 part of tartaric acid, 0.5 part of lithium carbonate, 1 part of carboxymethyl cellulose ether (20,000 molecular weight), 1 part of aluminum powder 1 part, 1 part of thixotropic lubricant, 230 parts of water.

[0068] Example 3

[0069] Ordinary Portland cement (42.5) 250 parts, aluminate cement 50 parts, quartz sand (70-140 mesh) 300 parts, heavy calcium carbonate (200-350 mesh) 300 parts, anhydrite 20 parts, z...

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Abstract

The invention provides a self-leveling terrace powder mortar composite and the composite comprises the following components in parts by weight: 250-350 parts of ordinary silicate cement, 50-100 partsof aluminate cement, 250-550 parts of quartz sand, 50-250 parts of heavy calcium carbonate, 10-30 parts of anhydrite and 40-80 parts of zeolite graft re-dispersible emulsion powder. The invention adopts zeolitic inner hole adsorption principle to disperse zeolite evenly in mortar; solid zeolite is crosslinked with graft zeolite inside and outside; in the hydration process of silicate cement, the dense doping among anhydrite, heavy calcium carbonate and crosslinked zeolite changes the lattice of cement so as to ensure the stable long-term strength of mortar and eliminate the phenomenons such asthe efflorescence of the self-leveling terrace mortar in later period, sand-stripping and cracking and the like; in addition, aluminum powder is added to increase the wearability and antishrinking property of the terrace mortar and the flexibility of the polymer is increased to improve the breaking strength of the mortar.

Description

technical field [0001] The invention relates to a dry powder mortar composition. Background technique [0002] With the rapid development of the country's economy, my country's infrastructure is also booming, and major projects such as the construction of various large stadiums are currently at the forefront of the world. In the construction of various large-scale projects, as a new technology and new material, self-leveling mortar has been paid more and more attention in China. It has been widely used in squares, large stadiums and road construction, and has a very good prospect as a new material. However, self-leveling mortar is the most technically demanding and most complex mortar in the mortar system. The performance stability of self-leveling mortar is the first to be solved, such as the decline in strength in the later period, the whitening of the mortar surface and the phenomenon of sand removal, etc., have not really been solved. . In recent years, the technical i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/06C08F292/00C04B14/06C04B14/28C04B14/04C04B22/04C04B24/26
CPCC04B28/06C04B2111/21C04B2111/62C04B40/0608C04B14/047C04B2111/2038C04B2103/0008C04B2103/0059C04B28/16C04B2111/343
Inventor 施晓旦郭和森王养臣
Owner 常熟市金龙装饰有限责任公司
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