水泥混凝土路(桥)面抗滑纹理构造浅识

广东温暖潮湿，雨季较长，年平均降雨量大；机动车年平均增长率大。公路水泥混凝土路面、桥面铺装层的抗滑构造是一个不容忽视的重要技术指标。针对过去常规小型机具施工和目前大型机械化摊销施工的砼路面、桥面铺装层所存在的抗滑纹理构造的差异和缺陷，笔者为，应迅速转变观念，从设计、施工工艺、机具、检测监控、评定标准上完善具体要求，尤其是对某些环境不良地段的砼路面、桥面铺装层的抗滑纹理构造的要求，以满足全天候正常安全行车的抗滑需要。

Application of gray-tone difference matrix-based features of pavement macrotexture in skid resistance evaluation

This paper presents a method to characterize asphalt pavement macrotexture using the gray-tone difference matrix （GTDM）and discusses the potentials of the GTDM indicators for skid resistance evaluation.There are 37 field sites included in the data collection,which cover 6 types of asphalt pavement surfaces. The mean profile depth derived from 3-D macrotexture measurements （MPD3 ） has a significant relationship with the mean texture depth （MTD ）,which can be described by a logarithm model with R2 of 0.962.There is no significant linear relationship between the friction coefficient at a speed of 60 km/h （DFT60 ）and macrotexture indicators.A nonlinear model with British pendulum number （BPN ） incorporated can relate DFT60 to MTD or indicator fcon .A comparison with MTD shows that GTDM-based fcon has a potential to be a macrotexture indicator for skid resistance evaluation,which describes the general height difference and the average local height difference of pavement macrotexture. A relatively high fcon is helpful for improving asphalt pavement skid resistance.

铣刨机刀具磨损及影响因素

路面铣刨机是一种利用装满小块铣刀的旋转滚筒对路面进行铣平：对沥青混凝土路面修补、翻修；对水泥混凝土路面抗滑纹理的加工、切缝、开槽等施工和养护作业的机械。另外，采用路面铣刨机还可以迅速地切除路面的各种病害并且剥离均匀，不伤基础．易于重新铺筑：切下来的沥青混合料渣可以直接用于路面表层的铺设．如果这些料渣已低于要求，还可以与新的沥青加热拌和后．再重新铺筑高质量的面层。