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Abstract In order to solve the adverse impact of river and lake sludge on the environment，a study was carried out on preparing of permeable pavement bricks with river and lake sludge. The representative river and lake sludge in Guangzhou was selected，and the basic physical and chemical properties of the sludge were analyzed. The river and lake sludge was used to replace part of the concrete aggregate to prepare the base material. Then the tests were carried out with sludge content 0.0%～30.0%, the water cement ratio 0.30～0.38, and the glue bone ratio 1∶3.0～1∶4.5. The flexural resistance, permeability coefficient of permeable were determined bricks. Based on the analysis of the experimental data, the feasibility of preparing permeable pavement bricks by using river and lake sludge and the corresponding mix ratio were studied. The optimum basic ratio was obtained with glue-bone ratio 1∶3.0, sludge mixing amount 10.0%, water-cement ratio 0.32, which provided a reference for the resource utilization of river and lake sludge.
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Received: 15 February 2023
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2022, Vol. 35 
