The use of sustainable pavement materials in asphalt mixtures
Document Type
Conference Proceeding
Publication Date
1-1-2012
Abstract
The laboratory properties of asphalt mixtures containing sustainable technologies were evaluated. Sustainable technologies included warm mix asphalt additives, an industrial waste extender, binder from renewable resources and plant based rejuvenators. Laboratory tests were performed to evaluate rutting performance, moisture resistance, and fracture resistance of the produced mixtures using the Hamburg loaded-wheel tester, the modified Lottman test, the Semi-Circular Bending (SCB) test, and the Thermal Stress Restrained Specimen test (TSRST), respectively. Results of the experimental program showed that the asphalt mixtures prepared with polymer-modified PG 76-22 were the overall best performer in the experimental program. The sulfur-modified WMA showed acceptable rutting performance as compared to conventional mixes. However, results of the fracture tests showed that the sulfur-modified WMA is more susceptible to fatigue cracking than conventional mixes given its stiff characteristics. In addition, the use of green asphalt binder improved the rutting performance of the mix. However, fracture resistance of green asphalt mixtures was reduced as compared to conventional mixes.
Publication Source (Journal or Book title)
7th International Conference on Maintenance and Rehabilitation of Pavements and Technological Control, MAIREPAV 2012
Recommended Citation
Mohammad, L., Elseifi, M., & Cooper, S. (2012). The use of sustainable pavement materials in asphalt mixtures. 7th International Conference on Maintenance and Rehabilitation of Pavements and Technological Control, MAIREPAV 2012 Retrieved from https://repository.lsu.edu/civil_engineering_pubs/747