Effect of Curing Age on Material Properties of Autoclaved Light-Weight Concrete Wallboard

The curing age of Autoclaved Light-weight Concrete (ALC) wallboards generally is not long enough in actual application, which may affect its material properties. By testing of various specimens for ALC with different curing ages, the relationship between the curing age of ALC and the dry density, moisture content, waterabsorption, compressive strength, splitting tensile strength, flexural strength, axial compressive strength and thermal conductivity is proposed, and the mathematic models were given. The results show that the growth of curing age is beneficial to most of the material properties of ALC, which are significantly different between those of 13 days and 10 days. In actual situation, the curing age should be 13 days at least while it cannot reach enough time.