Strength & Mechanical property Ⅱ

[1059] Mechanical properties and carbonation resistance of sea sand concrete containing ground granulated blast furnace slag under accelerated carbonation

Quoc Viet DANG¹, Yuko OGAWA², Kenji KAWAI² (1.Hiroshima University, 2.広島大学)

Keywords:Chloride ion、 carbonation、 blast furnace slag、 compressive strength、 modulus of elasticity

This study aims to investigate the effect of accelerated carbonation on mechanical properties of sea sand concrete containing ground granulated blast furnace slag (GGBS). Carbonation depth was also measured. GGBS was used to partially replace OPC with a ratio of 45% by mass. The presence of chloride ion in non-desalted sea sand improved the mechanical properties and carbonation resistance of concretes regardless of GGBS replacement. Carbonation increased the compressive strength but decreased the modulus of elasticity of GGBS concrete using non-desalted and desalted sea sand.