Fire-resistant and flame-retardant aerated concrete block and preparation method thereof

Abstract

The invention relates to a fireproof and fire retardant aerated concrete block and a preparation method thereof. The fireproof and fire retardant aerated concrete block is prepared by the following raw materials by weight: 15-20 parts of cement, 10-15 parts of quicklime, 8-12 parts of gypsum, 20-25 parts of loess, 0.2-0.3 part of aluminum powder, 1-2 parts of cellulose ether, 20-25 parts of corn stalk powder,10-15 parts of chilli vine powder, 8-10 parts of oil residues, 3-5 parts of aluminium hydroxide, 3-5 parts of ammonium alum, 2-3 parts of ammonium persulfate and 10-15 parts of sodium metasilicate. The aerated concrete block produced by the method has increased hydrophobicity and greatly improved water permeability by adopting the oil residues and modifying by an initiator. No wall seepage phenomenon is found in over 3 years by using the block produced by the invention in external walls of small residential areas, while the seepage is found every spring in some residents whose walls are built by conventional aerated concrete blocks. Aluminium hydroxide and ammonium alum are used by the method, so that the aerated concrete block has relatively good fire retardance and can greatly reduce risks of fire.

Description

technical field [0001] The invention belongs to a building material technology, in particular to a concrete block and a preparation method thereof. Background technique [0002] As a new type of wall material, air-entrained concrete is a low-energy, environmentally-friendly new building material, which belongs to the building materials promoted by the state. However, because ordinary air-entrained concrete is made of cement, fly ash, quicklime, gypsum, etc. Large shrinkage value, low strength, water seepage, no corrosion resistance, poor heat insulation, single source of material, etc. Therefore, further research on aerated concrete block technology is urgently needed to further meet market requirements. Contents of the invention [0003] The object of the present invention is to provide a fire-resistant and flame-retardant aerated concrete block and a preparation method thereof, so as to solve the problem of fire-proof and flame-retardant existing in the current aerated c...

AI Technical Summary

Problems solved by technology

[0002] As a new type of wall material, air-entrained concrete is a low-energy, environmentally-friendly new building material, which belongs to the building materials promoted by the state. However, because ordinary air-entrained concrete is made of cement, fly ash, quicklime, gypsum, etc. Large shrinkage value, low strength, water seepage, non-corrosion resistance, poor heat insulation, single source of material, etc. Therefore, further research on aerated concrete block technology is urgently needed to further meet market requirements