건설재료시공학연구실

Building material & construction lab.

Abstract
In this study, the reliability of the hammer-type nondestructive tester was evaluated by evaluating the compressive strength of the six layers placed on the actual site through the hammer-type nondestructive tester and the fracture test. As a result, it is difficult to apply the hammer-type nondestructive tester to the current level. However, if the reliability of the measured data is improved and the applicability is improved by using the hammer-type nondestructive tester, it will be useful for evaluating the strength of the on-site concrete structure.