Aerated concrete block in Vietnam
Aerated concrete block is river sand, lime, cement as the main raw material for aluminum paste as a gas former, the grinding of raw materials, ingredients by stirring, pouring gas evolution, static stop cutting, made of a green autoclave curing environmental protection, new self-insulation wall materials. A lightweight, high strength, durability, thermal insulation, sound insulation, fire protection, impermeability, anchoring good performance characteristics, with a convenient construction, workability, able to reduce the overall cost of the building, increasing the use of the building area, etc., have been quilt widely used in industrial and civil buildings, it has become one of the most thriving, wall materials with good performance. It is a new type of project the main push of the country.
First, lime production of fly ash aerated concrete block will be applied to the raw material, it should be effective calcium oxide content greater than 60%, the digestion rate of 10 ~ 30mm calcium quicklime. Add lime, fly ash role is to make products produced in two aspects: first, to provide calcium ingredients. Effective calcium oxide quicklime and fly ash active silica, alumina under hydrothermal reaction conditions to produce crystalline or colloidal calcium silicate hydrate, silica, calcium products, make the products have other properties of a certain intensity; second, the production process of the slurry gas evolution, thickening. On the one hand increase the alkalinity of the slurry so that Lu pink hair gas; the other hand, the heat released digestion, accelerate fat slurry gas, thickening and hardening.
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