Anti-cracking-shedding and strong-adhesion dry mixing plastering mortar

Abstract

The invention relates to an anti-cracking-shedding and strong-adhesion dry mixing plastering mortar, which is characterized by comprising by mass: 36-45% of limestone machine-made sand, 35-45% of yellow sand, 9.2-18.2% of cement, 1-10% of fly ash, and the balance of an admixture, wherein the admixture comprises a modifier and a thickening agent, the modifier is a mixture of starch ether, polysiloxane and polycarboxylic acid, the thickening agent is styrene and butadiene copolymerization rubber powder, and a weight ratio of the styrene and butadiene copolymerization rubber powder to the starch ether to the polysiloxane to the polycarboxylic acid is 100:1.6:14.5:4.8.

Description

Technical field [0001] The invention relates to the field of building materials, in particular to a plastering and plastering project that can be used for various types of masonry and ceilings of internal and external walls of buildings. It is suitable for wet construction techniques and blocks that must be wetted as required before construction. Generally non-structural repairs , A dry-mix plastering mortar with a stable slope and a flat platform that prevents cracking and falling off and has strong adhesion. Background technique [0002] With the increasing development of infrastructure construction, the demand for natural sand resources is also increasing. However, natural sand resources are non-renewable resources within a short period of time. The state has explicitly prohibited the mining of natural sand in some river sections, making natural sand resources Increasingly scarce. On the other hand, my country is one of the few countries in the world that uses coal as the mai...

AI Technical Summary

Problems solved by technology

[0004] Traditional plastering mortar is difficult to meet special requirements

With the development of new wall materials, traditional mortar cannot meet the requirements

Dry-mixed mortar generally requires admixtures, but mixing admixtures on site is difficult to ensure product quality

This is not conducive to the promotion and use of new wall materials, and cannot achieve the purpose of protecting the soil, utilizing waste and saving energy.

Due to the poor construction workability and low cohesive force of traditional plastering mortar, it is easy to cause many problems such as hollowing, cracking and falling off of the plastering layer when used for wall plastering

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