High-strength coal ash calcium sulphate whisker aerated concrete block and machining method thereof

Abstract

The invention discloses a high-strength coal ash calcium sulphate whisker aerated concrete block and a machining method thereof. The high-strength coal ash calcium sulphate whisker aerated concrete block is prepared from, by weight, 30-40 parts of river mud, 20-30 parts of coal ash, 3-5 parts of calcium sulphate whisker, 4-6 parts of cement, 3-5 parts of quick lime, 0.02-0.04 part of triethanolamine, 20-25 parts of crop straw, 1-1.5 parts of water glass, 0.2-0.5 part of hydroxypropyl methyl cellulose, 1-2 parts of additive, 1-2 parts of aluminum powder, 0.2-0.4 part of dodecyl salicylic acid, 0.01-0.02 part of polyoxyethylene aliphatic alcohol ether, 0.2-0.3 part of triterpenoid saponin, 0.01-0.03 part of calcium stearate and 0.02-0.04 part of benzotriazole. The aerated concrete block is small in drying shrinkage value and high in cracking resistance and water resistance, and all properties meet the national standard. Compared with existing products, the aerated concrete block has obviously higher strength.

Description

technical field [0001] The invention relates to the field of new building materials, in particular to a high-strength fly ash calcium sulfate whisker aerated concrete block and a processing method thereof. Background technique [0002] Air-entrained concrete block is a new type of building material that is lightweight, porous, thermal insulation, good fire resistance, nailable, sawable, planable, and has certain earthquake resistance. The production principle of aerated concrete blocks is to use siliceous materials, calcareous materials, in addition, add an appropriate amount of regulating materials and a small amount of gas-generating materials to add gas-generating agents (aluminum powder), through batching, stirring, pouring, pre-curing, Lightweight porous silicate products made by cutting, autoclaving, curing and other processes. Because it contains a large number of uniform and fine pores after being aerated, it is named aerated concrete. The pores in the air-entraine...

AI Technical Summary

Problems solved by technology

[0003] At present, there is a difficult technical problem in the production of aerated concrete blocks. The collapse rate of aerated concrete blocks is relatively high, resulting in a qualified rate of about 80%. The main reason for insufficient strength is that the existing gas-generating agent has poor gas-generating effect, uneven gas-generating, irregular shape, uneven size and uneven distribution of pores.

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