Rapid Field Assessment of Strength of Concrete by Accelerated Curing and Schmidt Rebound Hammer.

Tests were made on 6-in. cubes from 17 different batches of concrete. Some of the cubes were cured in water and tested in a standard compression machine. The remaining cubes were steam cured and tested with the rebound hammer prior to being loaded to failure in a compression testing machine. The results suggest that the rebound hammer may be used in conjunction with some method of accelerated curing to provide a rapid and convenient field method for estimating the strength and quality of concrete. [ABSTRACT FROM AUTHOR]