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.