Novel aerated concrete mortar and preparing method thereof

Abstract

The invention discloses novel aerated concrete mortar. The novel aerated concrete mortar is prepared from fly ash, desulphurization gypsum, an air entraining agent, a triethanolamine solution, water-based polymer resin, ferroferric oxide, portland cement and quick lime. A preparing method includes the following steps that 1) water is added into the fly ash and the desulphurization gypsum, and a mixture is mixed, stirred, subjected to standing and precipitated; 2) water is clarified to be drained, fly ash and desulphurization gypsum are taken out respectively and dried, impurities precipitatedat the bottommost portion are removed, and then the obtained fly ash and the obtained desulphurization gypsum are smashed into powder respectively to be screened out through a screening net; 3) wateris added into the screened fly ash, the screened desulphurization gypsum, the ferroferric oxide, the portland cement, the quick lime and the triethanolamine solution, the mixture is evenly stirred andmixed to be prepared into mixed mortar; 4) the mixed mortar is polished through a wet-type ball mill, then the air entraining agent and the water-based polymer resin are added, grinding is carried out, then water is added, the mixture is stirred to be even, and the novel aerated concrete mortar can be obtained. The novel aerated concrete mortar is even in fineness, few in internal pouring cavity,not prone to appearing of cracking and model collapsing and high in loading capacity, and properties in all the respects are greatly improved.

Description

technical field [0001] The invention relates to the technical field of concrete production, in particular to a novel air-entrained concrete mortar and a production method thereof. Background technique [0002] Air-entrained concrete is a lightweight porous silicate product made of siliceous materials and calcareous materials as the main raw materials, after mixing air-entraining agents through a series of processes, because a large number of small pores are evenly distributed inside it after gas generation , hence the name aerated concrete. A lot of aerated concrete has industrial residues, such as fly ash, desulfurized gypsum, etc. The general steps are to directly screen and grind and then put it into use, which can easily cause internal suspended particles or other impurities that cannot be removed. The hardness is different from the main material, and its fineness is often inconsistent, which will affect the quality of concrete. Moreover, the lime and cement added in t...

AI Technical Summary

Problems solved by technology

A lot of aerated concrete has industrial residues, such as fly ash, desulfurized gypsum, etc. The general steps are to directly screen and grind and then put it into use, which can easily cause internal suspended particles or other impurities that cannot be removed. The hardness is different from the main material, and its fineness is often inconsistent, which will affect the quality of concrete

Moreover, the lime and cement added in the foaming process will thicken, and if the thickening speed is too fast, part of the air will be wrapped inside to form cavities, which will reduce the strength of the concrete. Viscosity decreases, it is easy to cause cracks and mold collapse during pouring, and the internal micropores will also have lower pressure bearing capacity after pouring