Non-steady State Chloride Migration and Binding in Cracked Self-compacting Concrete
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2013年第5期
论文作者：马保国 穆松 De Schutter Geert
文章页码：921 - 926
摘 要：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.
马保国1，穆松1，De Schutter Geert2
1. School of Materials Science and Engineering,Wuhan University of Technology2. Magnel Laboratory for Concrete Research,Department of Structural Engineering,Ghent University
摘 要：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.
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