Properties of Antiwashout Underwater Concrete Containing Fly Ash

플라이애시를 혼합한 수중불분리성 콘크리트의 제물성

  • 문한영 (한양대학교 공과대학 토목공학과) ;
  • 김성수 (대진대학교 이공대학 토목공학과) ;
  • 이재준 (한양대학교 대학원 토목공학과) ;
  • 전중규 (한양대학교 대학원 토목공학과)
  • Published : 1999.04.01

Abstract

Recently, the antiwashout underwater concrete with an antiwashout admixtures has been increasingly used for underwater structures. However, the credibility of antiwashout underwater concrete was brought up as problems because it seldom was applied to fields. In this study, experiments were made on the basic properties of antiwashout underwater concrete replaced with fly ash up to 30% to improve its properties. Resultant to the test, we got the results as follow; funnel flow time was decreased, the slump flow was increased and the elevation of head was decreased rapidly whereas the amount of suspended solids became high, pH became low. In view of 70%, the standard ratio of compressive strengths between cast in water and in air, it was obtained the result that the ratio was over 90% at 28days.

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