A Study on Equotip Hardness Testing Method for Estimation Strength of Concrete

Abstract

In this research, the applicability to the concrete of the echo chip was examined in the beginning. The content was examination of difference, influence of direction of measurement, and influence depth. The following examination is a method of presuming compressive strength from Equotip hardness value. The method of the estimate of compressive strength was requested from the relation between Equotip hardness value of flat test piece and compressive strength of cylinder test piece.