高海拔寒冷地区抗剥落剂的应用探索

Research on the Application of Anti-stripping Agents in High Elevation Cold Areas

研究目的:为在青海高海拔寒冷地区路面施工中采用当地丰富的酸性石料,并使酸性石料与沥青具有较好的粘附性,需对加入抗剥落剂的类型和与沥青的重量比进行优选和试验,确定采用何种类型的抗剥落剂和抗剥落剂的最优掺量比,使酸性石料与沥青的粘附性达到规定的要求。研究结论:通过对抗剥落剂类型的优选试验和掺量比等试验验证,选择A和B类抗剥落剂,掺量为0.4%时,能使酸性石料与沥青的粘附性达到最佳效果,并能极大地改善沥青混凝土的抗水破坏能力和高温时的稳定性,且经济效益可观,经试验路段检测验证,路面各方面性能指标均达到规范要求,值得推广。

Research purposes： The tests are done for selection of the anti - stripping agent type and weight ratio of anti -stripping agent with asphalt so as to decide applying which kind of anti - stripping agent and seeking the most optimum blend ratio of anti - stripping agent for the purposes of applying the acidic stone in asphalt concrete pavement in high elevation cold area in Qinghai which is rich in acidic stone and making its adhesive with asphalt meeting the requirements. Research conclusions：It is decided to use type A and B anti - stripping agents after doing the tests. When the blend ratio is O. 4% , the adhesive of acidic stone with asphalt is the best, which can improve the asphalt concrete soil＇s capacity against water and stability at high temperature. The result of test in experimental section shows all property indexes satisfy the requirements.