Fatigue resistance of bituminous layers incorporating reclaimed asphalt pavement
|Title:||Fatigue resistance of bituminous layers incorporating reclaimed asphalt pavement||Authors:||Tabakovic, Amir
Gilchrist, M. D.
|Permanent link:||http://hdl.handle.net/10197/2311||Date:||Feb-2006||Abstract:||This paper presents the results of an investigation into the fatigue performance of a 20mm Binder Course Asphalt Pavement Mix incorporating Recycled Asphalt Pavement (RAP). For the study, a series of binder course mixes were designed containing varying percentages of RAP. A mix made only from virgin material, was selected as the control mix for the investigation. A Circular Wheel Tracker (CWT) was developed in order to simulate the dynamic loading conditions of a rolling wheel and to study the initiation and growth of fatigue cracks in an asphalt pavement mix. The CWT was commissioned within a temperature-controlled room with a customised data acquisition system. The test specimens were subjected to dynamic loading in the CWT and the dynamic strain on the underside of the slab was monitored throughout the test. A digital image processing technique was also used to measure the crack area and crack length at the underside of the test specimen. Parallel to this a separate testing programme was undertaken, whereby the fatigue resistance of bituminous mixtures incorporating same RAP contents was assessed using the indirect tensile fatigue test as described in BS DD ABF:1997. The results from these parallel strands are compared, and the performance of the various mixes incorporating RAP is assessed.||Funding Details:||Other funder||Type of material:||Conference Publication||Keywords:||Recycled asphalt pavement (RAP); Binder course (BC); Fatigue; Circular wheel track (CWT); Dynamic strain||Subject LCSH:||Recycled products
|Language:||en||Status of Item:||Not peer reviewed||Conference Details:||5th International Conference on Research & Practical Applications Using Wastes & Secondary Materials in Pavement Engineering, Liverpool, U. K., 22nd and 23rd February 2006|
|Appears in Collections:||Mechanical & Materials Engineering Research Collection|
Critical Infrastructure Group Research Collection
Civil Engineering Research Collection
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