Service life prediction of marine concrete structures

Zhang, Y.; Ye, G. (Guang)

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 () (TU Delft)

Service life Chloride diffusion Cementitious materials Water saturation

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http://resolver.tudelft.nl/uuid:c870355b-efa6-4e6f-828b-c8dbb5c4863a

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Published Date

2018

Language

English

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Faculty

Civil Engineering & Geosciences

Department

Materials- Mechanics- Management & Design

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.