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Anti-crack mortar and preparation method therefor

A technology for anti-cracking mortar and coarse sand, applied in the field of anti-cracking mortar and its preparation, can solve the problems of inconvenient transportation and storage, difficult storage, etc., and achieve the effects of good fluidity and water retention, simple process and high stability.

Inactive Publication Date: 2015-10-14
杭州正博新型建筑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, because at least one of the components of multi-component mortar is liquid, it is inconvenient in transportation and storage, and it is difficult to store in winter.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] The present invention is described in detail below, which is a preferred embodiment among various implementations of the present invention.

[0042] The mortar formulation in one embodiment uses:

[0043] Cement: 28~30%;

[0044] Coal ash: 10~6% (can be replaced by 5%~10% glass powder);

[0045] Heavy calcium: 5%;

[0046] Medium coarse sand: 57~59%;

[0047] 100,000 viscosity HPMC (hydroxypropyl methylcellulose): 0.3%;

[0048] Latex powder: 1.5~2%;

[0049] Water-preventing agent: 0.2%;

[0050] Polypropylene fiber: 0.3%.

[0051] In a preferred embodiment, the anti-cracking mortar contains the following components in terms of weight percentage: cement: 28-30%, coal ash: 10-6% or 5%-10% of glass powder, heavy calcium: 5%, medium coarse Sand: 57~59%, HPMC: 0.3%, latex powder: 1.5~2%, water-repellent agent: 0.2%, polypropylene fiber: 0.3%, other additives: 0-0.3%, among them, HPMC uses 100,000 viscosity hydroxyl Propyl methylcellulose. The cement is mixed with ...

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Abstract

The present invention relates to an anti-crack mortar and a preparation method therefor. The anti-crack mortar comprises the following components by weight percentage: 28-30% of cement, 10-6% of coal ash or 5%-10% of glass powder, 5% of heavy calcium, 57-59% of medium-coarse sand, 0.3% of HPMC, 1.5-2% of latex powder, 0.2% of water Shen agent, 0.3% of polypropylene fiber and 0-0.3% of other additives, wherein the HPMC is hydroxypropyl methylcellulose with viscosity being 100,000. According to the present invention, waste coal ash (glass powder) is used, so as to protect the environment and save energy; The mortar has good fluidity and water retention, thereby facilitating mixing. The hardened mortar has high hardness and high strength, and is non-toxic and high in stability.

Description

technical field [0001] The invention relates to building materials, in particular to an anti-crack mortar and a preparation method thereof. Background technique [0002] Mortar refers to the bonding substance used in building bricks. It is composed of a certain proportion of sand and cementing materials (cement, lime paste, clay, etc.) and water. It is also called mortar and mortar. Mortar is made by mixing cementitious materials (cement, lime, clay, etc.) and fine aggregate (sand) with water. Commonly used are cement mortar, mixed mortar (or cement-lime mortar), lime mortar and clay mortar. [0003] The mixed mortar uses cement and gypsum powder as the gelling agent, which has the advantages of softness, good water retention, and convenient construction. It is suitable for wet environment and external wall painting; although cement mortar can overcome the defects of mixed mortar, it has the disadvantages of poor workability, excessive water, high cement consumption, and f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B14/22C04B18/08
CPCY02W30/91
Inventor 张正良
Owner 杭州正博新型建筑材料有限公司
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