A Study on the Bond Strength Properties of Antiwashout Underwater Concrete

수중불분리콘크리트의 부착강도특성에 관한 연구

  • 김기동 (부경대학교 토목공학과) ;
  • 윤재범 (부경대학교 토목공학과) ;
  • 이상명 (부경대학교 토목공학과) ;
  • 김명식 (부경대학교 토목공학과)
  • Published : 1999.04.01

Abstract

The objective of this study was to investigate the bond strength properties of antiwashout underwater concrete. The fine aggregate(river sand, blended sand (river sand : sea sand = 1 : 1), condition of cast and cure(sea water, fresh water), and compressive strength of proportion(210kgf/$\textrm{cm}^2$ ~ 330kgf/$\textrm{cm}^2$) were chosen as the experimental parameters. The experimental results show that the underwater segregation resistance was increased, but flowability (slump flow) and air contents were decreased as the compressive strength of proportion increased. Bond strength of antiwashout underwater concrete was similar to plain concrete. From this study, rational analytic formula for the modulus of rupture and bond stress are to be from compressive strength of concrete.

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