High temperature stability performance of asphalt road cooling coatings based on road wheel tracking test(PDF)
长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]
- Issue:
- 2016年04期
- Page:
- 18-25
- Research Field:
- 道路工程
- Publishing date:
Info
- Title:
- High temperature stability performance of asphalt road cooling coatings based on road wheel tracking test
- Author(s):
- SUN Xiao-long; WANG Chao-hui; ZHANG Hong-hua; GAO Zhi-wei; LIU Xiang-ru
- (1.School of Highway, Chang’an University, Xi’an 710064, Shaanxi, China, 2. CCCC Highway Maintenance Engineering Technology Co. Ltd., Beijing 100080, China; 3. College of Information Engineering, Xizang Minzu University, Xianyang 712082, Shaanxi, China; 4. Hebei Jitong Road & Bridge Construction Co. Ltd., Shijiazhuang 050000, Hebei, China)
- Keywords:
- road engineering; cool road coating; road wheel rolling test; high temperature stability; cooling performance
- PACS:
- U411
- DOI:
- -
- Abstract:
- The high temperature stability evaluation method of road cooling coating has not yet formed now. A variety of raw materials, such as cooling functional materials, adhesive material, pigment, auxiliary materials and adjuvant were selected and different kinds of road cooling coatings for asphalt pavement were prepared. The cooling performances of road cooling coatings were evaluated comprehensively through field test. Based on road wheel tracking test, the high temperature stability of road cooling coatings were evaluated comprehensively. The applicable temperature limit and applicability of high temperature zoning were determined. By comparative analysis of road cooling coating brush specimens before and after dynamic stability changes, the influence of road cooling coating on high temperature stability of asphalt pavement was studied. The results show that different types of road cooling coatings can reduce the temperature of asphalt pavement temperature above 5 ℃ under the impact of outside environment. When the temperature is over 60℃, the cooling effect is up to a maximum of 11℃. Under the condition of high temperature, different types of road cooling coatings have good high temperature stability and the application temperature limit can reach to70 ℃, which meet the needs of different temperature areas. The application of road cooling coatings can significantly increase the dynamic stability of asphalt pavement, which can improve the high temperature stability of asphalt pavement. Under the coupling effect of water and load, the pavement cooling coating can keep good surface condition and integrity. This paper lays a solid foundation for the popularization and application of road cooling coating.
Last Update: 2016-07-28