Research on the Physical Properties of Permeable Concrete Incorporating Waste Glass Powder and Microscopic Mechanism of Composite Binder System
LI Qiong1,2,*, AN Baofeng1,2, SU Rui1,2, QIAO Hongxia1,2,*, WANG Chaoqun1,2
1 School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China 2 Gansu Advanced Civil Engineering Materials Engineering Research Center, Lanzhou 730050, China
Abstract: To explore new avenues for the utilization of waste glass as a construction material, this study investigated the feasibility and applicability of using waste glass powder (WGP) as a substitute for cement in the preparation of permeable concrete (PC). The study systematically examined the performance indicators of WGP-incorporated permeable concrete, aiming to improve the mechanical properties of PC while ensuring its permeability. The research reveals that the incorporation of WGP reduces the permeability of PC, such as connected porosity and permeability coefficient. Under the same WGP content, PC prepared with coarse aggregate particle sizes ranging from 9.5 to 16 mm exhibits better permeabi-lity performance than that with particle sizes ranging from 4.75 to 9.5 mm. With the increase of water-to-binder ratio, the permeability perfor-mance initially improves and then decreases, showing an overall decreasing trend. The compressive strength and flexural strength of PC at the late-age stages (28 d, 90 d) follow a pattern of initial increase and subsequent decrease with increasing WGP content, reaching an optimal content of 20%. Similarly, with the increase of water-to-binder ratio, both compressive strength and flexural strength initially increase and then decrease, reaching an optimal water-to-binder ratio of 0.28. The peak deflection decreases with increasing WGP content and water-to-binder ratio. Microscopic tests on the WGP-composite binder system indicate that the addition of WGP increases the relative content of C-S-H gel and reduces the content of CH. This enhancement is more pronounced in the mid to late-age stages, indicating improved activity performance.
李琼, 安宝峰, 苏睿, 乔宏霞, 王超群. 废玻璃粉透水混凝土物理性能及复合胶凝体系微观机理研究[J]. 材料导报, 2025, 39(8): 23100186-11.
LI Qiong, AN Baofeng, SU Rui, QIAO Hongxia, WANG Chaoqun. Research on the Physical Properties of Permeable Concrete Incorporating Waste Glass Powder and Microscopic Mechanism of Composite Binder System. Materials Reports, 2025, 39(8): 23100186-11.
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2025, Vol. 39 
