基于室内试验的橡胶沥青老化性能研究

针对甘肃省地形地貌复杂、紫外线辐射较强，沥青路面在服务期内往往出现老化等现象，对橡胶沥青老化性能进行了室内试验研究。通过沥青旋转薄膜加热老化试验（RTFOT）与压力老化容器（PAV）对原橡胶沥青试样进行短期老化与长期老化模拟试验后，又将经RTFOT老化后的试样放置在紫外线辐射箱内进行紫外线老化，再进行动态剪切试验（简称DSR）。结果表明:试验采用的橡胶沥青具有较好的抗疲劳及抗紫外线老化能力，适用于我国高海拔强紫外线地区。

Study on Aging Performance of Rubber Asphalt Based on Laboratory Test

In view of the phenomenons of that Gansu province has complex topography and strong ultraviolet radiation,the asphalt pavement in the service period often appears aging and other diseases the rubber asphalt aging performance was studied in laboralory. The original rubber asphalt is carried out short-term and long-term aging simulation test by the Asphalt rotary film heating test (RTFOT) and the pressure ageing vessel (PAV). The RTFOT aged sample was placed in ultraviolet radiation box for ultraviolet aging, and then carried out the Dynamic Shear Test (called DSR). The results showed that:the rubber asphalt used in the test has better ability to resist fatigue and anti-ultraviolet ageing,which is suitable for the high altitude and strong ultraviolet region in our country.