Rutting behavior of asphalt concrete modified with recycled concrete aggregate

Date

2009-07-08

Author

Gul, Waqar Ahmad
Güler, Murat

Metadata

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This paper describes how recycled concrete aggregate (RCA) is one of the most abundant waste materials that contains quality natural aggregates. RCA use in asphalt concrete not only reduces the total materials cost but also preserves natural resources by fulfilling the demand for quality aggregates in pavement constructions. However, due to variability in RCA characteristics, an evaluation of its effect on asphalt concrete performance is required. In this study, the effect of RCA content on rutting susceptibility of asphalt concrete specimens is determined using repeated creep tests performed in the uniaxial stress mode. Because a standard Marshall specimen does not meet the aspect ratio requirement of the test procedure, specimen modification is performed before testing. The test results indicate that slope constant and flow number as rutting susceptibility parameters give stronger relationship with the amount of permanent deformation developed. Increase in the RCA content yields improved rutting performance for coarse graded specimens, while it has reducing effect for fine graded specimens.

Subject Keywords

Aggregates, Asphalt concrete, Natural aggregates, Pavement performance, Recycled materials, Ruts (Pavements), Specimens, Wastes

URI

https://hdl.handle.net/11511/70607

Conference Name

The 6th International Congress on Maintenance and Rehabilitation of Pavements and Technological Control (2009)

Collections

Department of Civil Engineering, Conference / Seminar

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Citation Formats

W. A. Gul and M. Güler, “Rutting behavior of asphalt concrete modified with recycled concrete aggregate,” presented at the The 6th International Congress on Maintenance and Rehabilitation of Pavements and Technological Control (2009), 2009, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/70607.