Compressive Strength, Permeability, and Abrasion Resistance of Pervious Concrete Incorporating Recycled Aggregate

Xixuan Bai, Heng Zhou, Xiaoya Bian (), Xuyong Chen and Chengqiang Ren
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Xixuan Bai: School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430073, China
Heng Zhou: School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430073, China
Xiaoya Bian: School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430073, China
Xuyong Chen: School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430073, China
Chengqiang Ren: School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430073, China

Sustainability, 2024, vol. 16, issue 10, 1-16

Abstract: Extensive use of cement in the construction industry increases CO 2 emissions and has a negative impact on the environment. In this work, recycled coarse aggregate (RCA) from construction and demolition wastes (C&DW) was used to fabricate sustainable pervious concrete (PC). In order to mitigate the environmental hazards of excess cement waste and to improve the engineering properties of PC, silica fume (SF) and ground granulated blast-furnace slag (GGBS) were added. The effects of SF and GGBS on the compressive strength, permeability coefficient, porosity, and abrasion resistance of recycled aggregate pervious concrete (RAPC) were investigated. The results show that the incorporation of GGBS and SF effectively improves the compressive strength of RAPC but reduces the permeability coefficient and porosity. Moreover, due to the filling effect and pozzolanic activity, the incorporation of GGBS and SF significantly enhances the abrasion resistance of RAPC. Furthermore, the relationships between the compressive strength, permeability coefficient, porosity, and abrasion resistance of RAPC are clarified. The optimum replacement is achieved when the SF content is 7%, and the GGBS content is 20%, respectively, which results in the highest compressive strength (28.9 MPa) and the lowest permeability coefficient (1.2 mm/s) at 28 days, and the lowest mass loss rate (12.1%) after the Cantabro abrasion test.

Keywords: pervious concrete; recycled coarse aggregate; compressive strength; permeability; abrasion resistance (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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