슈미트햄머 시험법에 의한 콘크리트 강도 추정식

A New Strength Equation of Concrete by Schmidt Hammer Test

  • 박송철 (인천대학교 건축공학과 대학원) ;
  • 유재은 (인천대학교 건축공학과 교육대학원) ;
  • 김민수 ((주)합 건설방재기술단) ;
  • 권영웅 (인천대학교 건축공학과)
  • 발행 : 2004.11.01

초록

This study concerns the. new equation of concrete strength by schmidt hammer test. There are not only few estimate strength equations of concrete by schmidt hammer test, but also many problems to apply them because of time, cost, easiness, structural damage, reliability and so on. For this study, there performed a series of schmidt hammer test with in existing 730days' concrete structures and proposed equations as follows; $$Linear\;:\;f_{ck}=2.18R-40.54\;(r^2=77.7\%)$$ $$Quadratic\;:\;f_{ck}=0.076R^2-2.92R+40.04\;(R^2= 85.5\%)$$ here, fck : Estimated compressive strength of concrete by MPa, R : Rebound index of concrete.

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