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http://dx.doi.org/10.7855/IJHE.2015.17.1.059

Estimation of Pore Structure Characteristic and Permeability of Hybrid Concrete by Image Analysis Method  

Jang, Bong Jin ((주)삼우아이엠씨 기술연구소)
Chon, Beom Jun ((주)삼우아이엠씨 기술연구소)
Hong, Young Ho ((주)삼우아이엠씨 기술연구소)
Bae, Jong Oh ((주)삼우아이엠씨 기술연구소)
Lim, Hong Beom (강원대학교 토목공학과)
Publication Information
International Journal of Highway Engineering / v.17, no.1, 2015 , pp. 59-67 More about this Journal
Abstract
PURPOSES : In this study, an image analysis method is used to evaluate the pore structure characteristics and permeability of hybrid concrete. METHODS : The binder weight of hybrid concrete is set to $400kg/m^3$, $370kg/m^3$, and $350kg/m^3$, and for each value of binder weight, the pore structure and permeability of concrete mixture is evaluated. The permeability of hybrid concrete is evaluated using a rapid chloride penetration test(RCPT). RESULTS : The concrete pore structure characteristics of hybrid concrete reveals that as the binder weight is reduced, the entrained air is reduced and the entrapped air is increased. The permeability of the hybrid concrete for all values was measured to be below 1000 C, which indicates a "Very Low" level of permeability relative to the evaluation standard of KS F 2711. Additionally, as the binder weight is decreased, there is a significant increase in the permeability of chloride ions. CONCLUSIONS : In this study, the pore structure characteristics of hybrid concrete at different binder weights shows that as the binder weight is reduced, the entrained air is reduced and the entrapped air is increased. Consequently, chloride ion penetration resistance of the hybrid concrete is diminished. As a result, it is expected that this will reduce the concrete's durability.
Keywords
image analysis method; pore structure; permeability; rapid chloride penetration test(RCPT); hybrid concrete;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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