In view of the shortcomings of autoclaved aerated concrete blocks that need to destroy samples and have a long detection period,the mathematical relationship curves between ultrasonic wave velocity and com-pressive strength of autoclaved aerated concrete blocks at different ages(7d,28d,56d)are tested by testing the ultrasonic wave velocity and compressive strength of autoclaved aerated concrete blocks of two strength grades(A3.5 and A5.0),and the mathematical relationship curves are tested.The results show that the ultrasonic wave velocity has a high correlation and detection accuracy with the compressive strength of AAC blocks,which is suitable for the rapid detection of the compressive strength of AAC blocks.
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