PURPOSE: A lightweight aerated concrete composition and a preparation method thereof are provided, which has a good insulating property, the reduced frequency of crack generation due to the drying shrinkage and the improved compression strength and long-term strength. CONSTITUTION: The lightweight aerated concrete composition is prepared by adding water to a foaming agent to make a diluted solution; injecting the diluted solution into a foam generation machine to generate foam; mixing cement and fly ash (main components:SiO2, Al2O3, Fe2O3, and K, P, B, Co, Mo, Mg) in a ratio of 2:1 to 8:1 and water to make a cement paste; and mixing the foam in a range of 50-80 percent by volume with the cement paste and stirring it. The foaming agent is one selected from an animal foaming agent and a surfactant-type foaming agent.
展开▼
