The Discussion on Relation Between Crush Intensity and Velocity of Ultrasonic Sound for Autoclaved Aerated Concrete

摘要

Autoclaved aerated concrete is a kind of light and porous concrete. The structure characteristic is that there is no thick or thin aggregates, and there are a large amount air bubbles distributing evenly in the body. This kind of low intensity concrete masonry unit was applied gradually in big cities and the small towns’ buildings not only as heat preservation and packing wall but also as load-bearing walls material. This paper used ultrasonic and nondestructive method, tested plenty of groups of different sizes and densities autoclaved aerated concrete blocks, at the same time, performed compressive strength test. Knew the supersonic wave velocity with autoclaved aerated concrete blocks size and the compressive strength are related, and obtained the compressive strength-supersonic wave velocity function relationship through the regression analysis.