Research on pavement performance of recycled permeable concrete based on orthogonal test
WEI Zhu
FU Xiyao
ZHANG Jian
LI Xisong
MAI Mansheng
Abstract：The influence of mineral admixtures such as fly ash,slag micro powder,silica fume,and the substitution rate of re-cycled aggregates on the compressive strength,effective porosity,permeability coefficient,and wear resistance of recycled permeable concrete was studied through orthogonal experiments.The results show that the replacement rate of recycled aggregate has the most significant impact on the 28 day compressive strength and permeability coefficient of recycled permeable concrete.With the in-crease of the replacement rate of recycled aggregate,the 28 day compressive strength gradually decreases and the permeability co-efficient gradually increases.The effect of fly ash content on the length of grinding pits is most significant.With the increase of fly ash content,the wear resistance of recycled aggregate permeable concrete is significantly improved.Based on the efficiency co-efficient method,the optimal ratio for comprehensive performance is 15％,5％,and 8％of fly ash,slag micro powder,and silica fume,respectively.The replacement rate of recycled aggregates is 30％.The 28 day compressive strength of the recycled permeable concrete produced is 25.9 MPa,the permeability coefficient is 2.04 mm/s,and the grinding pit length is 31.7 mm.
Keywords：permeable concreterecycled aggregatemineral admixturepermeability performancewear resistance
Publication Date：2024-02-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 17-22 )