Dry mixing building mortar

Abstract

The invention relates to a dry mixing building mortar, which is characterized by comprising, by mass, 70.2-80% of limestone machine-made sand, 9-20% of cement, 1-11% of fly ash, and 0.1-0.8% of an admixture, wherein the admixture comprises a thickening agent and a modifier, the modifier is a mixture of starch ether, polysiloxane and polycarboxylic acid, the thickening agent is vinyl acetate homopolymerization rubber, and a weight ratio of the omopolymerization rubber 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 dry-mixed masonry mortar. 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 in 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 use coal as the main energy source. Coal accounts for more than 75% of the energy composition. Air pollution, water pollution, and large-scale production of fly ash caused by coal burning are all seriously threaten the ecological environment. At present, the comprehensive utilization of fly ash in building materials, construction, road construction, backfilling, agriculture, etc. is fully rolled out. Even ...

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Problems solved by technology

At present, the comprehensive utilization of fly ash in building materials, construction, road construction, backfilling, agriculture, etc. is fully rolled out. Even so, the comprehensive utilization rate of fly ash can only reach about 65%, and there are still 200 million yuan per year. Many tons of fly ash are piled up, occupying cultivated land and causing pollution

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