Non-steady State Chloride Migration and Binding in Cracked Serf-compacting Concrete

We adopted a notch method to study the influence of crack width （macro level） on chloride transport and binding of cracked concrete under a non-steady state migration test. The results show that migration coefficient of cracked concrete increases with increasing crack width up to a critical value （0...

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Bibliographic Details
Published in:武汉理工大学学报：材料科学英文版 2013 (5), p.921-926
Main Author: MA Baoguo MU Song De Schutter Geert
Format: Article
Language:English
Subjects:
Langmuir
密实
氯离子
混凝土
离子迁移
裂缝宽度
迁移系数
非稳态
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Summary:We adopted a notch method to study the influence of crack width （macro level） on chloride transport and binding of cracked concrete under a non-steady state migration test. The results show that migration coefficient of cracked concrete increases with increasing crack width up to a critical value （0.43 mm）, for the whole concrete or the area close to crack; the increase of migration coefficient could be independent from crack parameter when a critical crack width is reached. For chloride binding, Langmuir isotherms of cracked concrete samples exhibit the similar decreasing trend as crack width increases from 0.27 to 1.96 mm. The increased current value could be responsible for the trend based on the hypothesis of electric force.
ISSN:1000-2413
1993-0437