Determine the Compressive Strength of Calcium Silicate Bricks by Combined Non-Destructive Method

Abstract

The paper deals with the application of combined non-destructive method for assessment of compressive strength of calcium silicate bricks. In this case it is a combination of the rebound hammer method and ultrasonic pulse method. Calibration relationships for determining compressive strength of calcium silicate bricks obtained from non-destructive parameter testing for the combined method as well as for the L-type Schmidt rebound hammer and ultrasonic pulse method are quoted here. Calibration relationships are known for their close correlation and are applicable in practice. The highest correlation between variables is obtained from measurements using the SonReb combined non-destructive method, thereby a higher accuracy of predicted compressive strengths. Combined non-destructive SonReb method was proved as applicable for determination of compressive strength of calcium-silicate bricks at checking tests in a production plant and for evaluation of bricks built in existing masonry structures.

The paper deals with the application of combined non-destructive method for assessment of compressive strength of calcium silicate bricks. In this case it is a combination of the rebound hammer method and ultrasonic pulse method. Calibration relationships for determining compressive strength of calcium silicate bricks obtained from non-destructive parameter testing for the combined method as well as for the L-type Schmidt rebound hammer and ultrasonic pulse method are quoted here. Calibration relationships are known for their close correlation and are applicable in practice. The highest correlation between variables is obtained from measurements using the SonReb combined non-destructive method, thereby a higher accuracy of predicted compressive strengths. Combined non-destructive SonReb method was proved as applicable for determination of compressive strength of calcium-silicate bricks at checking tests in a production plant and for evaluation of bricks built in existing masonry structures.