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http://dx.doi.org/10.5345/JKIBC.2016.16.6.479

Evaluation on the Chloride Ion Diffusion Coefficient of Mortar Depending on Replacement Ratio of Recycled Fine Aggregate  

Lee, Sang-Yun (Dept. of Architectural Eng., Chungnam National University)
Yoo, Jae-Chul (Dept. of Architectural Eng., Chungnam National University)
Kim, Gyu-Yong (Dept. of Architectural Eng., Chungnam National University)
Yoon, Min-Ho (Dept. of Architectural Eng., Chungnam National University)
Nam, Jeong-Soo (Institute of Innovative Research, Tokyo Institute of Technology)
Choi, Hyeong-Gil (Dept. of Civil Eng. and Architecture, Muroran Institute of Technology)
Publication Information
Journal of the Korea Institute of Building Construction / v.16, no.6, 2016 , pp. 479-485 More about this Journal
Abstract
This paper presents an experimental study conducted to investigate the effect of recycled fine aggregate (RFA) on the mechanical properties and chloride diffusion behavior of mortar. The test results revealed that the addition of RFA plays an important role in the mechanical properties and pore structures of the investigated mortar specimens as well as chloride diffusion behavior. The mechanical properties such as compressive strength and flexural strength of recycled fine aggregate mortar (RFAM) were gradually decreased as RFA replacement ratio increase. The pore structure of RFAM was examined by permeability tests. The RFAM showed a increment in the permeability according to replacement ratio increase of RFA. But the chloride diffusion coefficient of RFAM was almost same up to 50% replacement ratio of RFA due to a chloride binding phenomenon of RFAM which may compensate the higher permeability of RFAM.
Keywords
recycled fine aggregate; attached mortar; chloride ion binding; chloride attack resistance;
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Times Cited By KSCI : 2  (Citation Analysis)
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