摘要
沥青路面良好的抗滑性能是保证行车安全的重要前提,选择合理的抗滑评价指标和评价方法也同样重要。选择钢渣和玄武岩作为粗集料,按照高速路面表面层的一定比例来铺设试验路面,采用全尺寸加速加载设备模拟车辆行驶进行加速加载实验,设定固定加载次数,在每个加载阶段完成以后利用高精度三维纹理采集设备采集路面磨损后的纹理数据,提取纹理参数结合路面纹理分析路面的磨损过程。结果表明:随着加载次数的增加,路面纹理被逐渐磨损,纹理参数Sk、Spk、Svk、Spq在加载20万次以内变化趋势基本不大,但在30万~60万次时,下降速度很快,该阶段路面纹理被磨损得很严重,抗滑性能下降较快;钢渣沥青混合料和玄武岩混合料磨损程度基本相同。
Good skid resistance of pavement is an important prerequisite to ensure the safety of driving.And the selection of reasonable anti-skid evaluation index and evaluation method is also an important prerequisite.Firstly,steel slag and basalt are selected as coarse aggregate,and the test pavement is laid according to a certain proportion of the surface layer of high-speed pavement.Secondly,full-size accelerated loading equipment is selected to simulate the accelerated loading experiments of vehicle driving,and a fixed number of loading times is set,and texture data of the pavement after wear are collected by high-precision three-dimensional texture acquisition equipment after each loading stage is completed,and finally,texture parameters are extracted to combine with the texture of pavement to analyze the wear process of the pavement.The results show that:with the increase of loading times,the pavement texture is gradually worn,the change trend of texture parameters Sk,Spk,Svk,Spq in the loading of 200000 times is basically not big,but between 300000 times to 600000 times,the rate of decline is very fast,in this stage,abrasion of the pavement texture is very serious,anti-skid performance declined faster;steel slag asphalt mixtures and basalt mixtures show that the wear degree is basically the same.
作者
巴怀强
BA Huaiqiang(China Railway Construction Yunnan Investment Co.Ltd.,Kunming 650000,China)
出处
《新型建筑材料》
2023年第11期122-125,共4页
New Building Materials
基金
云南省交通运输厅科技项目(云交科教[2021]39号)。
关键词
沥青路面
抗滑性能
钢渣
玄武岩
纹理参数
asphalt pavement
skid resistance
steel slag
basalt
textural parameters
作者简介
巴怀强,男,1979年生,高级工程师,E-mail:203245120@qq.com。
