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http://dx.doi.org/10.1007/s40069-015-0123-6

On Probability Distribution of Chloride Diffusion Coefficient for Recycled Aggregate Concrete  

Ying, Jingwei (College of Civil Engineering & Architecture, Guangxi University)
Xiao, Jianzhuang (Department of Structural Engineering, Tongji University)
Meng, Qiujiang (College of Civil Engineering & Architecture, Guangxi University)
Publication Information
International Journal of Concrete Structures and Materials / v.10, no.1, 2016 , pp. 61-73 More about this Journal
Abstract
In predicating the probability distribution of chloride diffusion coefficient of recycled aggregate concrete ($D_{RAC}$), the morphological characteristics of three phases, i.e., the old attached mortar, the natural aggregate and the new mortar, should all be taken into account. The present paper attempts to develop a probability density evolution method (PDEM) to achieve this. After verifying the derived PDEM results with experimental results, the effects of old attached mortar to the $D_{RAC}$ are examined in a quantitative manner. It is found that (1) the variation of the attached mortar content is much sensitive to $D_{RAC}$; (2) given the probability distribution of the content and chloride diffusion coefficient of old mortar, the probability distribution of DRAC can be analysed based on the PDEM; and (3) the critical chloride diffusion coefficient at a certain assurance rate can be obtained by the PDEM. The analysis results of this investigation will be valuable to the durability design for RAC.
Keywords
recycled aggregate concrete (RAC); recycled coarse aggregate (RCA); old attached mortar; chloride diffusion coefficient; probability density evolution method (PDEM);
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Times Cited By KSCI : 4  (Citation Analysis)
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