Service life prediction of marine concrete structures

Role of degree of water saturation

Conference paper (2018)

Authors

Y. Zhang Materials and Environment
G. (Guang) Ye Materials and Environment
Research Group
Materials and Environment
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Published Date

2018

Language

English

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Research Group

Materials and Environment

Abstract

Reliable durability design of marine concrete structures requires a critical understanding of the chloride diffusion in unsaturated concrete. A mathematical model for predicting the relative chloride diffusion coefficient has been established in a previous work [1]. In the present paper, that model will be extended to analyze the time-dependent chloride diffusion coefficient in unsaturated cementitious materials. The role of the degree of water saturation in service life prediction is discussed. It is emphasized that the long-term sharp decrease of the chloride diffusion coefficient in marine concrete is not primarily caused by densification of the microstructure, but by the decreasing degree of water saturation.

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