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Title |
The Diffusion Property of Chloride Ion into Concrete by Electrically Accelerated Method
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Keywords |
확산특성 ; 염화물이온 ; 전기적 촉진시험 ; 침투저항성 ; 3성분계 시멘트 Diffusion property ; Chloride ion ; Electrically accelerated method ; Penetration resistance ; Ternary blended cement |
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Abstract |
Recently, as many big marine concrete structures increase, it is necessary that chloride ion diffusion coefficient of concrete shall be evaluated but it will take a long time to evaluate chloride ion diffusion coefficient of concrete. Accordingly, many test methods are suggested to evaluate chloride ion diffusion coefficient in a short period time by the promotion in electro chemical ways but the systematic study for this is insufficient. Therefore, this study evaluates chloride ion penetration and diffusion features by three representative electric promotion tests targeting for three different cements whose ingredients are different and analyzes the correlationship between them. As a result, diffusion features of chloride ion varied according to the cement ingredients and three ingredients cement in which blast furnace slag powder and fly ash are mixed in constant ratio, which shows the most excellent cement diffusion properties. For diffusion properties of chloride ion, the correlationship between test methods are good.
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