Phosphorous slag aerated concrete and preparation method thereof

Abstract

The invention discloses a phosphorous slag aerated concrete. The concrete is characterized by consisting of a binding material, an exciting agent, an air entraining agent and water which are mixed, wherein the binding material consists of 60 to 100 weight percent of phosphorous slag and 0 to 40 weight percent of pulverized fuel ash; the exciting agent is water glass with modulus of 1.0 to 1.6; the water glass accounts for 5 to 8 weight percent of the binding material based on the weight of Na2O; the air entraining agent is aluminum powder or simple substance silicon; the using amount of the aluminum powder is 0.1 to 0.2 weight percent of the binding material; the using amount of the simple substance silicon is 0.05 to 0.1 weight percent of the binding material; and the weight ratio of theusing amount of the water to the using amount of the binding material is 0.28 to 0.32. The phosphorous slag aerated concrete product is prepared by taking the industrial waste slag such as the phosphorous slag and the like as the binding material and mixing the phosphorous slag, the exciting agent, the air entraining agent and the water. The phosphorous slag aerated concrete has the advantages that: the preparation process is simple without vapor-pressure process, so that the equipment investment can be greatly reduced; and the product is a sealed porous structure and has the characteristics of light weight, high strength, low thermal conductivity, good thermal insulation property and the like.

Description

Technical field [0001] The invention belongs to a concrete composition and a preparation method thereof, and relates to a phosphorus slag aerated concrete and a preparation method thereof. It is suitable for the preparation of a kind of lightweight building materials with low carbon emission. Background technique [0002] The serious problems caused by environmental degradation make the research of environmentally friendly materials very urgent. Can reduce CO during industrial production 2 The amount of emissions is particularly important. The production of traditional Portland cement emits a large amount of CO 2 , And reduce CO in cement production 2 The quantity is very limited, so it is urgent to find a low carbon emission cementitious material to replace cement. [0003] Lightweight building material is a new type of building material that is light in weight, has a certain strength, and has the functions of heat preservation, heat insulation and noise prevention. With the rap...

AI Technical Summary

Problems solved by technology

Although this method improves the original aerated concrete maintenance system and reduces energy consumption, this method uses 5% to 15% of high energy consumption materials - cement

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