A Study of Chloride Diffusion Properties of Concrete at Early Age

Authors

W.D. Yeih, Department of Harbor and River Engineering National Taiwan Ocean University Keelung 20224, Taiwan, Republic of China
R. Huang, Department of Harbor and River Engineering National Taiwan Ocean University Keelung 20224, Taiwan, Republic of China
J.J. Chang, Department of Harbor and River Engineering National Taiwan Ocean University Keelung 20224, Taiwan, Republic of China

Abstract

Existence of chloride ions in concrete may accelerate reinforcement corrosion. Chloride ions can penetrate into the concrete by the diffusion process even if no major cracks exist. It is well known that properties of concrete will change with time since the hydration reaction continues for a long time, which implies that the diffusion coefficient of concrete is a time-dependent function. In this research, the diffusion behavior is focused on early-age mortar and concrete. It is shown that the diffusion coefficient changes dramatically at early age; and the control of interface property is significantly important to chloride diffusion. The effect by adding silica fume in concrete and mortar is also examined.

Recommended Citation

Yeih, W.D.; Huang, R.; and Chang, J.J. (1994) "A Study of Chloride Diffusion Properties of Concrete at Early Age," Journal of Marine Science and Technology: Vol. 2: Iss. 1, Article 8.
DOI: 10.51400/2709-6998.2489
Available at: https://jmstt.ntou.edu.tw/journal/vol2/iss1/8