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http://dx.doi.org/10.14190/JRCR.2018.6.4.259

Carbonation Behavior of GGBFS-based Concrete with Cold Joint Considering Curing Period  

Cho, Sung-Jun (Department of Civil and Environmental Engineering, Hannam University)
Yoon, Yong-Sik (Department of Civil and Environmental Engineering, Hannam University)
Kwon, Seung-Jun (Department of Civil and Environmental Engineering, Hannam University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.6, no.4, 2018 , pp. 259-266 More about this Journal
Abstract
In the work, the carbonation behavior and strength characteristics in cold-joint concrete are evaluated for OPC(Ordinary Portland Cement) and GGBFS(Ground Granulated Blast Furnace Slag)concrete considering three levels of curing age (28, 91 and 365 days). The compressive strength in GGBFS concrete is level of 86% of OPC concrete at the 91 days of curing period, but is level of 107% at 365 curing days due to hydration reaction. Carbonation velocities in both OPC and GGBFS concrete significantly decease after 91 curing days. The effect of cold joint on carbonation is evaluated to be small in GGBFS concrete. The increasing ratios of carbonation velocity in cold joint are 1.06 and 1.33 for 28-day and 365-day curing condition, respectively. However they decreases to 1.08 and 1.04 for GGBFS concrete for the same curing conditions.
Keywords
Carbonation; Cold joint; Compressive strength; GGBFS; Carbonation velocity coefficient;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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