Polymer cement-based self-leveling mortar

Abstract

The invention relates to the field of building materials, in particular to polymer cement-based self-leveling mortar for leveling ground, which comprises the following materials in percentage: 20.0 to 30.0 percent of Portland cement, 5.0 to 8.0 percent of high-alumina cement, 8.0 to 12.0 percent of anhydrite, 1.0 to 4.0 percent of polymeric powder, 55.0 to 65.0 percent of mineral admixtures, 0.1 to 0.5 percent of water reducer, 0.5 to 1.0 percent of water-retentive thickening admixture, and 0.05 to 0.30 percent of retarder or 0.05 to 0.20 percent of coagulation accelerator. The polymer cement-based self-leveling mortar has the advantages that: the polymer cement-based self-leveling mortar has the performance characteristics of automatic leveling, high early flexural and compressive strength and high spreading degree on the ground, also has excellent performance of high bonding strength with base materials, high durability, high compactness, no crack and no reservation of expansion joints after construction, and the like, and can be used for automatically leveling the base of the ground, and repairing old ground, sand ground and the ground.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a polymer cement-based self-leveling mortar for ground levelling. Background technique [0002] Ground self-leveling material is a reform of traditional ground materials. Its use can effectively solve the problems of uneven ground, sanding, pitting, damage and other problems in engineering construction. It can also be used for repairing old ground such as damage and sanding. . [0003] Self-leveling materials are usually divided into organic and inorganic. Organic self-leveling materials mainly include epoxy resin self-leveling materials, which have superior performance but high prices and high construction requirements. They are mainly used in special occasions. Inorganic self-leveling materials can be divided into It is a gypsum-based self-leveling material and a cement-based self-leveling material. Due to poor water resistance, the acidity of the gypsum-based self-leveling m...

AI Technical Summary

Problems solved by technology

[0003] Self-leveling materials are usually divided into organic and inorganic. Organic self-leveling materials mainly include epoxy resin self-leveling materials, which have superior performance but high prices and high construction requirements. They are mainly used in special occasions. Inorganic self-leveling materials can be divided into It is a gypsum-based self-leveling material and a cement-based self-leveling material. Due to poor water resistance, the acidity of the gypsum-based self-leveling material has a rusting effect on iron products, and the application range is limited. The cement-based self-leveling material can be divided into single-component and There are two types of two-components. Two-component cement-based self-leveling materials are mainly added with polymer emulsion as an independent second component. When used, they are mixed with the first component in a certain proportion. It has good fluidity, fast setting speed, and elasticity. Better, but more expensive, and inconvenient to use and transport, but the existing one-component materials have lower elasticity