New Parameter to Evaluate Moisture Damage of Asphalt-Aggregate Bond in Using Dynamic Shear Rheometer
Publication: Journal of Materials in Civil Engineering
Volume 22, Issue 3
Abstract
Most of the techniques used today to evaluate practically moisture damage in asphalt pavements are involved in compacted asphalt mixtures. These tests generally simulate field conditions, and provide a performance-related parameter of moisture effects by applying mechanical techniques. No test of the compacted mixtures, however, can isolate the fundamental and rheological properties of the asphalt-aggregate bond, which hinder proper understanding and quantification of the moisture damage phenomenon. To avoid these complications and improve the evaluation of asphalt-aggregate interfacial properties in moist situations, this study proposes a new experimental method. In this method, dynamic shear rheometer was used to measure asphalt-aggregate interfacial properties. A degree of moisture damage relating to the interfacial properties was then quantified using linear viscoelastic concepts to propose a meaningful parameter, called wet to dry yield shear stress ratio. Moreover, possible factors such as film thicknesses, conditioning times, and chemical effects were studied in terms of the W/D YSS ratio.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 22 • Issue 3 • March 2010
Pages: 267 - 276
Copyright
© 2010 ASCE.
History
Received: Apr 30, 2008
Accepted: Oct 27, 2009
Published online: Feb 12, 2010
Published in print: Mar 2010
Notes
Note. Associate Editor: Eyad Masad
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