学位论文详细信息
Evaluation of Rutting Behavior of Density Deficient Asphalt Mixtures
permanent deformation;density;asphalt;rutting
El-Haggan, Omar Sherif ; Roy H. Borden, Committee Member,Y. Richard Kim, Committee Chair,Murthy N. Guddati, Committee Member,El-Haggan, Omar Sherif ; Roy H. Borden ; Committee Member ; Y. Richard Kim ; Committee Chair ; Murthy N. Guddati ; Committee Member
University:North Carolina State University
关键词: permanent deformation;    density;    asphalt;    rutting;   
Others  :  https://repository.lib.ncsu.edu/bitstream/handle/1840.16/2199/etd.pdf?sequence=1&isAllowed=y
美国|英语
来源: null
PDF
【 摘 要 】
The purpose of this research has been to evaluate the effect of change in density on the rutting performance of the asphalt pavement. This investigation helps in determining the appropriate penalty for density deficient pavements based on the rutting performance. Permanent deformation tests were performed at 30, 40, and 50C on specimens with four different air void contents: 8, 8.75, 9.5, and 11%. More permanent deformation was observed at higher air voids and temperature. Complex modulus tests were also performed at the same four air void contents. Results showed that dynamic modulus decreases with the increase of both temperature and air void content as the asphalt mixture becomes softer at higher temperatures and air voids. Finally, a case study was performed to see the effect of air voids on the rutting behavior of the asphalt pavement. In this case study, the yearly rut depth for a certain pavement structure was predicted for both 8% and 11% air voids. Rut depth was determined to be 0.0074 inches for the 8% air voids pavement and 0.0168 inches for the 11% air voids pavement. This means that the pavement with 3% deficiency in air voids had an amount of rutting which is 2.3 times that of the in-specification pavement.
【 预 览 】
附件列表
Files Size Format View
Evaluation of Rutting Behavior of Density Deficient Asphalt Mixtures 1438KB PDF download
  文献评价指标  
  下载次数:12次 浏览次数:23次