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http://dx.doi.org/10.14190/JRCR.2022.10.4.450

Characteristics of Chloride Diffusion and Compressive Strength in the Mortar containing C12A7 based Binder and Anhydrite  

Byeong-Cheol, Lho (Department of Civil Engineering, Sangji University)
Yong-Sik, Yoon (Department of Civil and Environmental Engineering, Hannam University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.10, no.4, 2022 , pp. 450-456 More about this Journal
Abstract
In this study, as the preliminary research on the development of heating concrete members, compressive strength and accelerated chloride diffusion behavior in the mortar specimens containing C12A7 based binder and anhydrite was evaluated. Also, the effect of the mixing ratio of the citric acid based retarder was quantitatively evaluated by considering 4 levels of mixing cases. The compressive strength tests of the mortar specimen were performed referred to KS L ISO 679, and the accelerated chloride diffusion tests were performed according to NT BUILD 492 and ASTM C 1202. In the mortar with 0.3 % of retarder, the highest compressive strength was evaluated, which showed the strength development ratio of 127.6 % compared to the control case. It was considered that engineering performance was improved by effectively securing setting and curing time with 0.3 % of citric acid based retarder. As the result of the evaluation of the passed charge and the accelerated chloride diffusion coefficient, the evaluation results had similar behavior with the results of compressive strength. According to the previous study, the strength behavior and the chloride diffusion behavior had a linear relationship. The mixture showing the highest strength performance had the highest durability performance for chloride ingress, and the heating concrete development from this study will be performed in the future.
Keywords
$C_{12}A_{7}$; Anhydrite; Citric acid; Compressive strength; Rapid chloride penetration test;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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