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改性沥青路面结构不仅在高温、重载时车辙变形量低,而且低温性能良好。改性沥青是指掺加改性或采取对沥青轻度氧化等加工措施,使沥青或沥青混合料的性能得以改变而制成的沥青结合料。使得改性沥青路面施工工序控制的难度较大,如拌和温度增高,拌和时间延长,碾压难度加大等,若施工工艺不当及工序控制不严,都会造成改性沥青路面因空隙率过大而易渗水,最终导致早期损坏等问题。这种路面在应用中质量可靠,造价低,但是会出现开裂的现象,现根据多年的实际经验,对防治改性沥青路面开裂现象的施工措施进行简要的论述。
Modified asphalt pavement structure not only at high temperature, heavy load rut deformation is low, and low temperature performance is good. Modified bitumen is modified asphalt or take a slight oxidation of the asphalt and other processing measures, so that the performance of asphalt or asphalt mixture can be made of asphalt binder. Making the modified asphalt pavement construction process more difficult to control, such as the mixing temperature increases, mixing time extended, rolling more difficult, if the construction process and lax control of the process, will result in modified asphalt pavement due to excessive porosity While easily seepage, eventually leading to early damage and other issues. This road in the application of reliable quality, low cost, but there will be cracking phenomenon is based on years of practical experience, the prevention and treatment of modified asphalt pavement cracking phenomenon of construction measures briefly discussed.