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Rutting Potential of Gap Graded Warm Mix Asphalt with Higher Percentage of Crumb Rubber
The gap graded asphalt mixtures have higher air voids when compared to dense graded asphalt mixtures and are expected to fail due to moisture induced damage. In the present study, an attempt has been made to evaluate the rutting potential and moisture sensitivity of gap graded asphalt mixture with and without warm mix additive. The moisture damage and the rutting values of the asphalt mixtures with and without warm mix were comparable. The gap graded asphalt mixtures with and without warm mix additive showed better resistance to fatigue. Further, the 3D tomography study revealed that, the higher percentage of air voids in the gap graded asphalt mixtures were occupied by the crumb rubber coated with bitumen resulting in rut and moisture resistant mixtures. The use of warm mix additive in rubber modified gap graded mixture resulted in an economical and sustainable asphalt mixture for the wearing course.
Rutting Potential of Gap Graded Warm Mix Asphalt with Higher Percentage of Crumb Rubber
The gap graded asphalt mixtures have higher air voids when compared to dense graded asphalt mixtures and are expected to fail due to moisture induced damage. In the present study, an attempt has been made to evaluate the rutting potential and moisture sensitivity of gap graded asphalt mixture with and without warm mix additive. The moisture damage and the rutting values of the asphalt mixtures with and without warm mix were comparable. The gap graded asphalt mixtures with and without warm mix additive showed better resistance to fatigue. Further, the 3D tomography study revealed that, the higher percentage of air voids in the gap graded asphalt mixtures were occupied by the crumb rubber coated with bitumen resulting in rut and moisture resistant mixtures. The use of warm mix additive in rubber modified gap graded mixture resulted in an economical and sustainable asphalt mixture for the wearing course.
Rutting Potential of Gap Graded Warm Mix Asphalt with Higher Percentage of Crumb Rubber
Kubair, K. Sai (author) / Surana, Shreyans R. (author) / Krishna, M. Venkata Sai (author) / Raju, Sridhar (author) / Ram, V. Vinayaka (author)
ASCE India Conference 2017 ; 2017 ; New Delhi, India
2018-12-13
Conference paper
Electronic Resource
English
Rutting and Cracking Performance of Asphalt Concrete Incorporating Plastic Waste and Crumb Rubber
| Springer Verlag | 2022