摘要
为了研究温度-动水压力耦合作用下不同骨架类型沥青混合料的冲刷行为,利用自主研发的动水冲刷仪在温度为30℃、40℃、50℃和动水压力为0.7MPa、1MPa的条件下,对三种类型沥青混合料马歇尔试件进行冲刷试验。结果表明:OGFC-16的水损坏最严重,AC-16最轻;OGFC-16的动力渗水系数最大,AC-16的最小;OGFC-16的质量损失最大为25.6%,AC-16的质量损失最小,仅为1.12%;经冲刷后,AC-16所能承受的峰值力最大,为2920MPa,OGFC-16所能承受的峰值力最小,最大仅为963MPa。
In order to study the erosion behavior of asphalt mixtures with different skeleton types under the temperature-hydrodynamic pressure coupling,the erosion tests on three types of asphalt mixture Marshall specimens were carried out by the self-developed hydrodynamic erosion tester at temperatures of 30℃,40 ℃,50 ℃ and hydrodynamic pressures of 0.7 MPa and 1 MPa. The results show that the water damage of OGFC-16 is the most serious and that of AC-16 is the lightest. The dynamic permeability coefficient of OGFC-16 is the largest,and that of AC-16 is the smallest. OGFC-16 has the largest mass loss of 25.6%,and the mass loss of AC-16 is the smallest,only 1.12%. After scouring,AC-16 can bear the maximum peak force,which is 2920 MPa,while the peak force of OGFC-16 is the smallest and the maximum is only 963 MPa.
引文
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