Plastering mortar replacing river sand by using tailing

Abstract

The invention relates to a building material, in particular to plastering mortar replacing river sand by using a tailing. 100 to 150 parts of portland cement, 100 to 150 parts of tailing with the particle size of between 0.15 and 0.28 millimeter, 1 to 1.5 parts of water reducing agent and 50 to 75 parts of water are stirred and mixed by a stirrer according to a certain volume ratio so as to prepare ready mixed mortar or dry mortar which serves as floor plastering mortar, wall surface plastering mortar, masonry mortar and the like. The plastering mortar has the advantage that: the tailing can be reasonably mixed with cement, macadam, the water reducing agent and the water, so that the tailing has a uniform structure in the mortar and volume shrinkage such as chemical shrinkage, dry shrinkage and the like generated in a set cement hardening process can be restrained and reduced simultaneously. Therefore, a produced mortar admixture has high liquidity and durability, volume shrinkage generated in the set cement hardening process can be restrained and reduced effectively and the mortar is prevented from cracking, so that the high value-added resource utilization of the tailing is realized.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a plastering mortar which uses tailings instead of river sand. Background technique [0002] Mortar is an indispensable raw material in building materials, and the proportion of river sand contained in it is about 50%. River sand resources in our country are indeed very tight, and river sand mining has seriously damaged natural rivers. Taking Anshan City as an example, urban construction needs to consume a large amount of river sand every year. The fluid concrete alone needs about 1.5 million cubic meters of river sand every year. There are other river sand consumptions such as concrete, masonry mortar, and plastering mortar. It is estimated that the river sand consumption in the entire urban area is between 2 and 3 million cubic meters. If considering the Liaoyang and Haicheng areas within the economically reasonable transportation radius of 70 kilometers, the annual ...

AI Technical Summary

Problems solved by technology

At present, there are few domestic and foreign research results on tailings replacement of river sand, and there are no systematic results. There is no report that it can be successfully applied to actual engineering.