沥青路面层间抗剪强度影响因素试验研究

发布时间：2017-12-26 22:11

本文关键词：沥青路面层间抗剪强度影响因素试验研究　出处：《交通科学与工程》2016年04期 　论文类型：期刊论文

【摘要】：保证沥青层间较高的层间剪切强度是提高沥青路面使用寿命的重要因素。选取3种路面干(湿)状态、3种粘层油用量、2种路表清洁度及2种正压力,采用MTS试验机,对试件的层间剪切强度进行了检测。试验结果表明:当粘层油用量为0.15~0.70L/m~2时,通过增加粘层油用量均能够显著提高路面层间剪切强度;路面存在少量滞水状态下,不会对沥青路面层间剪切强度产生显著影响,但在长时间(24h以上)浸水条件下,层间剪切强度显著降低;正压力为0 MPa且路表清洁时的层间剪切强度较大,正压力为0.14 MPa且路表受污染时的层间剪切强度提高了;正压力为0 MPa时的层间剪切强度均小于正压力为0.14 MPa时的层间剪切强度。
[Abstract]:To ensure the high interlayer shear strength between the asphalt layers is an important factor to improve the service life of the asphalt pavement. 3 kinds of pavement dry (wet) state, 3 kinds of viscous oil consumption, 2 road surface cleanliness and 2 positive pressure were selected, and the interlaminar shear strength of the specimens was tested by MTS test machine. The test results show that when the viscous oil content 0.15~0.70L/m~2, by increasing the amount of viscous oil can significantly improve the shear strength of pavement pavement; there is a small amount of stagnant state, will not have a significant effect on the shear strength of asphalt pavement, but in a long time (more than 24h) soaking condition, the interlaminar shear strength decreased significantly; positive pressure is 0 MPa and the road surface when cleaning the interlaminar shear strength is larger, the pressure is 0.14 MPa and the shear strength of road surface contaminated layer increased; the positive pressure is 0 MPa when the shear strength between layers is smaller than the pressure as the shear strength of 0.14 MPa layers.
【作者单位】：安阳市公路管理局;
【分类号】：U416.217
【正文快照】： 沥青路面层间粘结状态的优劣是影响其使用寿命的关键因素之一。沥青路面在车辆转向、起步及制动等过程均会在沥青层间产生一定的剪切作用[1]。若层间粘结状态较差,层间粘结力不足,在车辆荷载作用下,易产生月牙状层间剪切破坏。尤其是在坡道路段,车辆剪切作用力增加[2]。因而保

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