Framework for Low-Temperature Cracking Analysis of Asphalt Mixtures Using a Viscoelastic Continuum Damage Model
Publication: Journal of Materials in Civil Engineering
Volume 27, Issue 10
Abstract
Thermal cracking performance assessment of flexible pavements is paramount to improve the quality of the roads in cold-climate regions. In this paper, a reduced testing framework for analysis of hot-mix asphalt (HMA) concrete is proposed to replace the indirect tensile (IDT) creep compliance and strength testing by dynamic modulus and fatigue tests performed on an asphalt mixture performance tester (AMPT) device. The theoretical aspects of the methodology are shown as well as its validation with laboratory results. Mixtures containing various percentages of reclaimed material (RAP) were investigated to assess the adequacy of the proposed method to this type of material. Results showed that the proposed framework can be successfully used to predict the low-temperature creep compliance and IDT strength, which are the two key elements in thermal cracking performance analysis of flexible pavements.
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Published In
Journal of Materials in Civil Engineering
Volume 27 • Issue 10 • October 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Mar 14, 2014
Accepted: Oct 7, 2014
Published online: Dec 16, 2014
Discussion open until: May 16, 2015
Published in print: Oct 1, 2015
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