一种不粘轮乳化沥青的制备方法及其性能研究

Preparation Method and Performance Study of Non-Stick Wheel Emulsified Bitumen

在高温环境下,乳化沥青粘层会粘附在施工车辆的轮胎上,进而导致沥青路面层间粘结失效。为了解决这一问题,通过不同的基质沥青进行混合来制备不粘轮乳化沥青,对其进行了一系列性能测试,包括恩格拉粘度、储存稳定性以及蒸发残留物的软化点等指标。同时,通过黏附率试验来检验不粘轮乳化沥青的粘轮性能,与市场上销售的普通乳化沥青粘层油相比,在高温环境下,不粘轮乳化沥青有着显著的不粘轮效应。通过对两种乳化沥青的层间粘结力进行了研究,并分析了不同环境温度下对乳化沥青粘结力的影响水平。研究结果显示,无论在是室温还是高温环境下,不粘轮乳化沥青的层间剪切强度均优于市售普通乳化沥青,并且在高温环境下,不粘轮乳化沥青的层间粘结作用能够得到更好的发挥。不粘轮乳化沥青的各项指标符合规范要求,它可以减少施工时间,延长道路使用寿命,降低维修频次,降低工程造价的目标。

In high-temperature environments,the emulsified asphalt adhesive layer adheres to the tires of construction vehicles,resulting in the failure of the interlayer bonding of asphalt pavement.In order to solve this problem,non-stick wheel emulsified bitumen was prepared by mixing different matrix bitumen,and a series of performance tests were carried out,including Engela viscosity,storage stability,and softening point of evaporation residue.At the same time,the adhesion rate test was used to test the viscous wheel performance of non-stick wheel emulsified bitumen,and compared with the ordinary emulsified asphalt viscous layer oil sold on the market,the non-stick wheel emulsion bitumen had a significant non-stick wheel effect in a high temperature environment.The interlayer adhesion of two types of bitumen emulsion was studied,and the influence level on the adhesion of bitumen emulsion at different ambient temperatures was analyzed.The results show that the interlayer shear strength of non-stick wheel emulsified bitumen is better than that of commercially available ordinary emulsified asphalt in both room temperature and high temperature environment,and the interlayer bonding effect of non-stick wheel emulsified bitumen can be better exerted in high temperature environment.The indicators of non-stick wheel emulsified asphalt meet the requirements of the specification,which can reduce the construction time,extend the service life of the road,reduce the frequency of maintenance,and reduce the goal of project cost.