The influence of recycled asphalt pavement on 20mm binder course mix performance

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Title: The influence of recycled asphalt pavement on 20mm binder course mix performance
Authors: Tabakovic, Amir
Gibney, Amanda
Gilchrist, M. D.
McNally, Ciaran
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Date: Oct-2006
Abstract: This paper presents the results of ongoing research on the mechanical performance of a 20mm binder course asphalt pavement mix incorporating recycled asphalt pavement (RAP). 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. The effect of introducing RAP into the binder course mix was evaluated through a series of laboratory tests including the Marshall Test, Indirect Tensile Stiffness Modulus Test, Indirect Tensile Fatigue Test and Water Sensitivity Test. A Circular Wheel Track (CWT) was developed in order to study the dynamic effects of a rolling wheel travelling over an asphalt pavement. The CWT was commissioned within a temperature controlled room along with a customised Data Acquisition (DAQ) system. The system involves the testing of rectangular slabs and allows for the investigation of the dynamic tensile strain. The dynamic tensile strain is digitally recorded and the loading effect assessed. The laboratory tests have shown that the introduction of RAP to the binder course mix resulted in an improvement in all mechanical properties. This was also observed in the dynamic tensile strain test.
Funding Details: Other funder
Type of material: Conference Publication
Keywords: Recycled asphalt pavementStiffnessFatigue
Subject LCSH: Pavements, Asphalt--Testing
Recycled products
Binders (Materials)--Fatigue
Language: en
Status of Item: Not peer reviewed
Conference Details: Paper presented at the 3rd National Symposium on Bridge and Infrastructure Research in Ireland, Dublin, 2006 and at ICAP (International Conference on Asphalt Pavements) conference Quebec, Canada, 2006
Appears in Collections:Mechanical & Materials Engineering Research Collection
Critical Infrastructure Group Research Collection
Civil Engineering Research Collection

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