Freeze-Thaw Resistance of Blended Cement Concrete using Seawater

해수를 사용한 혼합시멘트계 콘크리트의 동결융해 저항성

  • 문한영 (한양대학교 토목공학과) ;
  • 김성수 (대진대학교 토목공학과) ;
  • 이승태 (한양대학교 대학원 토목공학과) ;
  • 김종필 (한양대학교 대학원 토목공학과) ;
  • 박광필 (한양대학교 대학원 토목공학과)
  • Published : 2002.05.01

Abstract

The durability of concrete involves resistance to freeze-thaw action, corrosion, permeation, carbonation, chemical attack and so on. Generally, properties of concrete have been well understood under the separate action of these deterioration mechanisms. However, in practice, the degradation of concrete usually is the result of combined action of physical and chemical attack and can be accelerated by the combined action of several deterioration mechanisms. In the present study, to evaluate the combined deterioration by freeze-thaw action and seawater attack, ground granulated blast-furnace slag or silica fume concrete with water or seawater as mixing water was exposed to 210 cycles of freeze-thaw action. Tests were conducted to determined the relative dynamic modulus of elasticity and compressive strength. Furthermore, The XRD, SEM and EDS analysis were performed on the deteriorated part of concrete due to freeze-thaw action and seawater attack.

Keywords