Influence of Compressive Stress on Chloride Penetration into Concrete mixed with Blast Furnace Slag or Fly Ash
By Yuki Sakoi, Masahiro Kawakita and Takashi Horiguchi
Concrete Research and Technology
Vol.18, No.3, Sep. 2007 (Issue 45)
- Many studies on chloride penetration into concrete were reported, however a few attempts have been done so far for the chloride penetration into stressed concrete. The purpose of this study is to clarify the influence of stress- strength ratio on chloride penetration into concrete mixed with blast furnace slag or fly ash. From the experimental results, it was found that the diffusion coefficient under loading was affected by stress-strength ratio, and it was clear that the diffusion coefficient of stressed concrete was different from that of non-loading or released condition. Moreover, it was observed that micro-crack in stressed concrete was different from that of released concrete, and it was considered that the difference of diffusion coefficient between stressed concrete and released concrete was due to the difference of this crack condition.
- Diffusion Coefficient, Compressive Stress, Mineral Admixture, Microcrack, Non- Steady State Migration Test Method