Mechanical Damage and Freeze–Thaw Damage of Concrete with Recycled Brick Coarse Aggregate

Guiying Tan, Shangwei Gong, Ting Wang, Meng Li, Jiahui Li, Xiaoyu Ren, Weishen Zhang, Chenxia Wang, Fubo Cao and Tian Su ()
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Guiying Tan: Department of Civil Engineering, School of Civil Engineering and Geomatics, Shandong University of Technology, Zibo 255000, China
Shangwei Gong: Department of Civil Engineering, School of Civil Engineering and Geomatics, Shandong University of Technology, Zibo 255000, China
Ting Wang: Department of Civil Engineering, School of Civil Engineering and Geomatics, Shandong University of Technology, Zibo 255000, China
Meng Li: Department of Civil Engineering, School of Civil Engineering and Geomatics, Shandong University of Technology, Zibo 255000, China
Jiahui Li: Department of Civil Engineering, School of Civil Engineering and Geomatics, Shandong University of Technology, Zibo 255000, China
Xiaoyu Ren: Department of Civil Engineering, School of Civil Engineering and Geomatics, Shandong University of Technology, Zibo 255000, China
Weishen Zhang: Department of Civil Engineering, School of Civil Engineering and Geomatics, Shandong University of Technology, Zibo 255000, China
Chenxia Wang: Department of Architectural Engineering, School of Civil Engineering, Inner Mongolia University of Science and Technology, 7 Alding Street, Baotou 014010, China
Fubo Cao: Department of Architectural Engineering, School of Civil Engineering, Inner Mongolia University of Science and Technology, 7 Alding Street, Baotou 014010, China
Tian Su: Department of Civil Engineering, School of Civil Engineering and Geomatics, Shandong University of Technology, Zibo 255000, China

Sustainability, 2024, vol. 16, issue 13, 1-21

Abstract: The influence of different recycled brick coarse aggregate (RBA) substitution rates on the mechanical performance and frost resistance of concrete was observed. The test findings revealed that RBA deteriorated the compressive and flexural properties in concrete and improved the tensile properties and plasticity in concrete to some extent. The frost resistance of concrete can be effectively improved by adding RBA. The influence degree of the RBA concrete frost resistance factor was quantified by gray entropy correlation theory, and the gray entropy correlations between freezing and thawing cycles, natural coarse aggregate substitution rate, recycled brick aggregate substitution rate, and freezing and thawing damage value ( D N ) were 0.9979, 0.9914, and 0.9876, respectively. Moreover, the freezing and thawing damage model about GM(1, 1) theory was developed ( R 2 > 0.87), which can better predict the freezing and thawing damage of RBA concrete. The damage mechanism of RBA concrete during freezing and thawing was revealed.

Keywords: recycled brick coarse aggregate; mechanical; freezing and thawing; damage; microstructure (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2024
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