Proceedings of the Korea Concrete Institute Conference (한국콘크리트학회:학술대회논문집)

Korea Concrete Institute (한국콘크리트학회)
권호 표지

An Experimental study on Explosive spalling of Concrete According to Kinds of Fine Aggregate and Admixture

잔골재 및 혼화재 종류에 따른 콘크리트의 폭열 성상에 관한 실험적 연구

  • 장재봉 (충남대학교 대학원 건축공학과) ;
  • 김갑수 (충남대학교 대학원 건축공학과) ;
  • 김재환 (충남대학교 대학원 건축공학과) ;
  • 김용로 (충남대학교 대학원 건축공학과) ;
  • 권영진 (호서대학교 환경안전공학부 소방학과) ;
  • 김무한 (충남대학교 건축공학과)
  • Published : 2003.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study is to present data for the reusing, reinforcement and estimation of safety of the RC structure damaged by fire, and for the prevention of explosive spalling by checking the character of explosive spalling according to kinds of fine aggregate, admixture and water-cement ratios. The materials used fine aggregates were sea sand, crushed sand and recycled sand, and the admixtures were fly ash and blast-furnace slag. Also the water-cement ratios was 55% and 30.5%. After those were heated respectively for 30 and 60 minutes in accordance with Standard Time-Temperature Curve. And then conditions of explosive spalling were divided into five grades, and characters of explosive spalling were investigated.

Keywords