Study on the Setting time of Concrete Using Ultrasonic Test

초음파법에 의한 콘크리트 응결시간 측정에 관한 연구

  • 구본창 (쌍용양회공업(주) 중앙연구소 콘크리트연구실 연구원) ;
  • 강민호 (쌍용양회공업(주) 중앙연구소 콘크리트연구실 연구원) ;
  • 이대근 (쌍용양회공업(주) 중앙연구소 콘크리트연구실 연구원) ;
  • 김종우 (쌍용양회공업(주) 중앙연구소 콘크리트연구실 연구원) ;
  • 하재담 (쌍용양회공업(주) 중앙연구소 콘크리트연구실) ;
  • 박석균 (대전대 토목공학과)
  • Published : 1998.04.01

Abstract

Ultrasonic test usually was used for defect detection, crack depth measurements and strength estimation of hardened concrete. The essence of the pulse velocity method is that the transition time of an ultrasonic longitudinal pulse is measured in concrete. Ultrasonic velocity was propagated to the age of concrete, made a radical change at that time when concrete was setted. This study which monitored the change in a concrete by ultrasonic test was performed to estimate initial setting and final setting.

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