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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50427

Title: ASSESSMENT OF CHLORIDE DIFFUSION IN HIGH STRENGTH CONCRETE USING THE ACCELERATED IONIC MIGRATION TEST
Authors: Ran Huang
Wei-Chung Yeih
Contributors: 國立臺灣海洋大學:河海工程學系
Keywords: effective diffusion coefficient
chloride ions
electrical field intensity
high strength concrete
slag
Date: 1997-10
Issue Date: 2018-10-08T03:41:36Z
Publisher: Journal of the Chinese Institute of Engineers
Abstract: Abstract: The diffusivity of chloride ions through high strength concrete has been studied. A simple potential difference has been applied to accelerate the CI− diffusion through concrete. Test variables have included the strength of concrete, the applied electrical potential, and the pozzolan. A modified equation and numerical method are used to compute the diffusion coefficients of chloride ions in concrete. Test results show that the effective diffusion coefficients are between 2.53×10−14m2/sec and 9.84×10−14m2/sec for concrete with compressive strength between 62.5MPa and 91.1MPa. The slag refines the internal pores of concrete by pozzolanic reaction, and reduce the chloride ion diffusion in concrete. For high strength concrete, the computed effective diffusion coefficients are not significantly affected by the applied electrical field intensit.
Relation: 20(1) pp.39-45
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50427
Appears in Collections:[河海工程學系] 期刊論文

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