Self-leveling dry-mixed mortar and preparation method thereof

Abstract

The invention relates to the field of building materials, and particularly provides self-leveling dry-mixed mortar and a preparation method thereof. The self-leveling dry-mixed mortar comprises the following raw materials in parts by weight: 20-30 parts of ordinary Portland cement, 30-50 parts of steel slag, 1-10 parts of phosphogypsum, 1-5 parts of sepiolite powder, 0.1-2 parts of a high-efficiency water reducing agent, 0.1-1 part of a defoaming agent, 0.1-2 parts of carboxymethylcellulose ether, 1-10 parts of fly ash, 0.1-3 parts of basalt fiber and 0.1-3 parts of redispersible latex powder. The self-leveling dry-mixed mortar has the advantages of high strength, a smooth and flat surface after coagulation, good wear resistance, low cost and good environment friendliness.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a self-leveling dry-mixed mortar and a preparation method thereof. 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] Cement-based self-leveling mortar has good fluidity and stability, high early strength, fast construction speed, and low labor intensity. It is an ideal material for ground paving of large supermarkets, parking lots and warehouses, and is also an ideal material for ground construction of modern buildings. The development direction has great market potential. Compared with developed countries, the research on cement-based self-leveling mortar in my country started relatively late, around the lat...

AI Technical Summary

Problems solved by technology

On the one hand, it is because this material is not suitable for the national conditions at present.

Second, the current domestic economy and construction technology are relatively backward, and the cost of large-area use in construction projects is relatively high, which is difficult for users to accept

[0004] (1) The early strength is low and the setting time is long, which affects the construction process and the time when the project is put into use

[0005] (2) Insufficient wear resistance, self-leveling mortar is mainly suitable for large supermarkets, shopping malls, parking lots, factory workshops, warehouses and other floors, which require high wear resistance

[0006] (3) The compressive and flexural strength is low, and the industrial load-bearing capacity is weak, which is not conducive to the promotion and application in factories, warehouses, parking lots, shopping malls and other places with relatively high load-bearing requirements.

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