Journal of Japan Society of Civil Engineers, Ser. E2 (Materials and Concrete Structures)
Online ISSN : 2185-6567
ISSN-L : 2185-6567
Paper (In Japanese)
EVALUATION OF RESISTANCE OF CONCRETE TO CHLORIDE INGRESS BY USING CHLORIDE PENETRATION DEPTH AFTER NON-STEADY-STATE MIGRATION EXPERIMENT
Eisuke NAKAMURAHiroshi MINAGAWAShintaro MIYAMOTOMakoto HISADAHirohisa KOGAHiroshi WATANABE
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2016 Volume 72 Issue 3 Pages 304-322

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Abstract

 An experimental study was conducted to develop an evaluation method for the resistance of concrete to chloride ingress by using chloride penetration depths measured with a colorimetric method after non-steady-state migration experiments. The evaluation method was quicker and simpler than other existing laboratory-accelerated tests because the non-steady-state chloride penetration depths were utilized to evaluate the resistance of concrete to chloride ingress. An appropriate procedure to determine the applied voltage and the testing period was proposed on the basis of the experimental results obtained by using mortar and concrete specimens. The movement of chloride during the non-steady-state migration experiments was also clarified by analyzing the tested specimens. The test results derived from the evaluation method were compatible with those given by the immersion test; both test results accurately indicated the improvement of the resistance of concrete to chloride ingress due to mixing supplementary cementitious materials. Moreover, the evaluation method was found useful for measuring the time-dependent development of the resistance of concrete to chloride ingress.

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© 2016 by Japan Society of Civil Engineers
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