Unlocking the role of pores in chloride permeability of recycled concrete: A multiscale and a statistical investigation

Chloride ingress is strongly associated with the properties of pores in recycled concrete. To unlock its role in chloride permeability, the pore structures of concrete containing various quantities of recycled coarse (fine) aggregates were analyzed from multi-scales, and the outcomes were further ve...

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Bibliographic Details
Published in:Cement & concrete composites 2022-01, Vol.125, p.104320, Article 104320
Main Authors: Lian, Songsong, Ruan, Shaoqin, Zhan, Shulin, Unluer, Cise, Meng, Tao, Qian, Kuangliang
Format: Article
Language:English
Subjects:
Chloride penetration
Correlation analysis
Pore structure analysis
Recycled concrete
X-ray computed tomography
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Summary:Chloride ingress is strongly associated with the properties of pores in recycled concrete. To unlock its role in chloride permeability, the pore structures of concrete containing various quantities of recycled coarse (fine) aggregates were analyzed from multi-scales, and the outcomes were further verified by the statistical investigation. The results show that different roles that recycled coarse (fine) played in terms of the pore structures of recycled concrete, as reflected by their volume and diameter of mesopores and micropores, respectively. Meanwhile, Unlike the previous studies, two key pore parameters (i.e., PV 
ISSN:0958-9465
1873-393X
DOI:10.1016/j.cemconcomp.2021.104320