碎石化结构层的室内物理力学性能研究

以国道324线罗梅公路的水泥混凝土路面大修工程为依托,将碎石化后的结构层移至室内进行筛分、抗压强度、抗压回弹模量、水稳定性以及冲刷、排水等一系列的物理力学性能试验研究。结果表明:碎石化后混凝土结构层的饱水试件抗压回弹模量为134.8 MPa,标准差7.46,变异系数0.06,冲刷系数为0.0277 m~3/(m~2·万次),渗透系数为2.34 cm/s。

Study on Laboratory Physical and Mechanical Properties of Structural Layer of Rubblization

Based on the repair engineering on the cement concrete pavement of National Road 324 (Luomei Section), the structural layer of rubblization was transferred to laboratory for a series of physical and mechanical tests, such as screening, compression strength, and compressive modulus of resilience, water stability, scouring and drainage. The results show that, for the concrete structural layer of rubblization, its saturated specimen has the following parameters: compressive modulus of resilience: 134.8 MPa, with the standard deviation of 7.46 and the variation coefficient of 0.06; scouring coefficient: 0.027 7m3/(m2·ten thousand times); and permeability coefficient: 2.34 cm/s.