골재요인에 따른 초고강도 콘크리트의 잔존역학적 특성

Residual Mechanical Properties of Ultra High Strength Concrete with Aggregate Factor

  • 이희광 (충남대학교 대학원 건축공학과) ;
  • 김규용 (충남대학교 대학원 건축공학과) ;
  • 이태규 (충남대학교 대학원 건축공학과) ;
  • 남정수 (충남대학교 대학원 건축공학과) ;
  • 구경모 (충남대학교 대학원 건축공학과) ;
  • 윤용상 (충남대학교 대학원 건축공학과)
  • 발행 : 2011.11.18

초록

It was very important to evaluate concrete experimentally at elevated temperature because concrete was filled with aggregate of concrete volume about 70 percent. Concrete exposure to high temperatures produces changes in its internal structure, for instance loss of its strength and deformation capacity, in extreme cases risking the service life of the structure. The work of this paper is performed to evaluate the thermal behavior of ultra-high strength concrete having different water to cement ratio (strength), fine aggregate to aggregate ratio and maximum size of coarse aggregate. For exposure to 500℃ during 1 hour, residual mechanical properties of the ultra-high strength concrete decreased as the s/a ratio decreases and the maximum size of coarse aggregate increases.

키워드