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- Title
PERFORMANCE OF HIGH RECYCLED ASPHALT PAVEMENT (RAP) CONTENT AS BASE LAYER IN FLEXIBLE PAVEMENT.
- Authors
Abdelrahman, Magdy; Alam, Tahsina Binte; Zollars, John
- Abstract
Between 80 and 90 percent of the asphalt pavement construction projects are the rehabilitation of asphalt pavements that have reached the end of their service lives. These rehabilitation projects produce about 100 million tons of Recycled Asphalt Pavement (RAP) per year from millings, presenting a major solid waste concern. RAP has an ever-growing value to practitioners in pavement construction. However, limited research exists to quantify the performances of the pavement layers especially for high RAP contents. This paper investigates the performance of the pavement base layer having high RAP content using resilient modulus (MR) as the primary indicator for base layer characterization. Testing results of RAP blends was collected from the Minnesota Department of Transportation. Conclusions indicate that RAP has a potential to be used in high percentages in pavement base layer applications. Testing indicates that MR increases with RAP content, with asphalt content and with aggregate dry density. Moisture content has less significant effect on the resilient modulus as compared to aggregate sources.
- Subjects
MINNESOTA; ASPHALT pavement recycling; CONSTRUCTION projects; INDUSTRIAL wastes; SOLID waste; MINNESOTA. Dept. of Transportation
- Publication
Journal of Solid Waste Technology & Management, 2010, Vol 36, Issue 3, p131
- ISSN
1088-1697
- Publication type
Article
- DOI
10.5276/JSWTM.2010.131