Lightweight autoclaved foam concrete block and production method thereof

Abstract

The invention provides a lightweight autoclaved foam concrete block and a production method thereof. The block comprises production raw materials of a dry material, water and foaming agent, wherein the dry material consists of the following components in percentage by mass: 9-15 percent of ordinary Portland cement, 20-30 percent of blast furnace slag micro-powder, 55-65 percent of aggregate and 0.2-1 percent of coagulating thickener; the coagulating thickener comprises aluminum sulfate and soda ash; the aluminum sulfate is 50 percent of the total mass of the coagulating thickener; the soda ash is 50 percent of the total mass of the coagulating thickener; the mass ratio of the water to the dry material is 0.4-0.6; and 0.8-1.6 kg foaming agent is used in each cubic meter of mixture of the water and the dry material. The block and the method have the benefit that the foaming agent of foam concrete is applied in the production technique of an aerated concrete block, so that the problems of weak strength, large air shrinkage, easiness in surface pulverization and the like in the foam concrete are solved. As the cement dosage of the foam concrete is reduced, the raw material cost is effectively reduced, and the social benefits of waste utilization and environmental friendliness are achieved.

Description

technical field [0001] The invention belongs to the field of lightweight energy-saving building wall materials, and in particular relates to a lightweight autoclaved foam concrete block and a production method thereof. Background technique [0002] At present, the energy-saving wall material widely used in the market is autoclaved aerated concrete block, but it uses aluminum powder to generate gas, so that the internal pores are locally connected, resulting in its waterproof and heat insulation performance compared with that of the foam using physical foaming. Concrete has poor performance. However, the production strength of traditional foam concrete blocks is low, the amount of cement is large, and the production cost is high. Contents of the invention [0003] The problem to be solved by the present invention is to provide a lightweight autoclaved foam concrete block and its production method, which is especially suitable for reducing the amount of cement in raw materi...

AI Technical Summary

Problems solved by technology

[0002] At present, the energy-saving wall material widely used in the market is autoclaved aerated concrete block, but it uses aluminum powder to generate gas, so that the internal pores are partially connected, resulting in its waterproof and heat insulation performance compared to the foam using physical foaming. poor performance of concrete

However, the production strength of traditional foam concrete blocks is low, the amount of cement is large, and the production cost is high.

Images