Journal of Advanced Concrete Technology
Online ISSN : 1347-3913
Scientific paper
Relationship Among the Permeation Rate of Water into Concrete, the Mix Design, Curing, and the Degree of Drying
Yuya SakaiYuki YokoyamaToshiharu Kishi
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Volume 15 (2017) Issue 10 Pages 595-602

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Abstract

Water permeation into concrete causes various types of deterioration in concrete structures such as rebar corrosion, frost damage, ASR, etc.; however, the evaluation of the water permeation rate is difficult. This paper proposes a simple equation to evaluate the water permeation rate into concrete, based on basic information such as the mix design, curing condition, and degree of drying. Concrete specimens are cast, cut into slices of different thicknesses, and the time taken for water penetration is measured. The permeation rate is calculated from the relationship between the obtained permeation time and the slice thickness. Additionally, a literature survey is conducted to collect the water permeation rate in various types of concrete. A prediction equation for the water permeation rate is proposed, based on the data. Although this data contains various types of concrete with/without the admixture material, different water-to-binder ratios, and different curing conditions, all the calculated values fall within a range of ±150% of the data from literature.

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© 2017 by Japan Concrete Institute
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