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由于改性沥青路面具有优异的路用性能,近十年来,改性沥青在我国高速公路中得到了越来越多的应用。但与基质沥青相比,改性沥青有着较高的粘度,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。
As the modified asphalt pavement has excellent road performance, the recent ten years, modified asphalt in our country has been more and more applications. However, compared with the matrix asphalt, the modified asphalt has a higher viscosity, making it more difficult to control the construction process of the modified asphalt pavement. For example, the mixing temperature is increased, the mixing time is prolonged, the rolling difficulty is increased, and if the construction process is improper and Strict process control, will result in modified asphalt pavement due to porosity is too large and 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.