Fatigue resistance of bituminous layers incorporating reclaimed asphalt pavement

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Title: Fatigue resistance of bituminous layers incorporating reclaimed asphalt pavement
Authors: Tabakovic, Amir
Gibney, Amanda
Gilchrist, M. D.
McNally, Ciaran
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)FatigueCircular wheel track (CWT)Dynamic strain
Subject LCSH: Recycled products
Pavements, Asphalt--Cracking
Binders (Materials)--Fatigue
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Status of Item: Not peer reviewed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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