Natural volcanic ash autoclaved aerated concrete block and preparation method thereof

Abstract

The invention relates to a natural volcanic ash autoclaved aerated concrete block. The block consists of natural volcanic ash accounting for 50 to 60 percent of total weight, cement accounting for 4 to 6 percent of total weight, quick lime accounting for 15 to 20 percent of total weight, building gypsum accounting for 0 to 2.0 percent of total weight, aluminum powder paste accounting for 0.03 to 0.04 percent of total weight and water accounting for 20to 25 percent of total weight. Meanwhile, the invention also discloses a method for preparing the block. The block has good strength, low density, low thermal conductivity coefficient, low shrinkage and other performances. The method can fully utilize local resources in regions which are abundant in natural volcanic ash but short of sand and fly ash so as to solve the need of local building insulation markets.

Description

technical field

[0001] The invention relates to an autoclaved aerated concrete block and a preparation method thereof, in particular to a natural volcanic ash autoclaved aerated concrete block and a preparation method thereof. Background technique

[0002] With the increase of the country's building energy conservation efforts, the application of external wall insulation technology is also increasing, and an important part of it is wall materials. Autoclaved aerated concrete blocks as wall materials, the current main raw material is the use of sand (commonly known as sand aerated concrete blocks) or fly ash (commonly known as fly ash autoclaved aerated concrete blocks) blocks), but in areas where these two resources are relatively short, it can only be solved by long-distance transportation. The damage rate of autoclaved aerated concrete blocks caused by transportation is very high, which leads to an increase in the cost of using blocks , Indirectly affect the use of this n...

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