01046114

Component

https://doi.org/10.3141/2001-06

http://scholar.google.com...Wang&publication_year=2007

The presence of pore water in mixtures can cause premature failure of hot-mix asphalt pavements. The processes typically associated with moisture damage are complex and occur over a long period of time in the field. Short of being able to simulate each of the possible mechanisms of moisture damage directly, the ideal laboratory-based conditioning system should accelerate the penetration of moisture through the asphalt film and at the same time minimize complicating effects. This paper presents the results of an experiment conducted to determine whether it was possible to use cyclic pore pressures to induce enough damage to distinguish between mixtures known to be highly resistant from mixtures known to be susceptible to moisture damage. Experimental constraints included requirements that conditioning be accomplished within a reasonable length of time and that typical laboratory equipment be used. Evaluation of the resulting effects of moisture damage included the use of the Superpave® indirect tension test and the energy ratio parameter. Findings show that cyclic pore pressures can be used to accelerate moisture damage enough to distinguish between mixtures known to be strippers and those known to be highly resistant to moisture damage. The use of cyclic pore pressures to accelerate moisture damage in mixtures may minimize the introduction of other confounding damage effects on the mixtures.

01082338

English

pp 46-55

2007

Transportation Research Record: Journal of the Transportation Research Board

9780309104272

Print

Figures (8) ; References (22) ; Tables (3)

Asphalt mixtures; Hot mix asphalt; Moisture damage; Pore water; Stripping (Pavements); Superpave; Test procedures

Energy ratio; Indirect tension test; Premature failure

Highways; Materials; I31: Bituminous Binders and Materials

TRIS, TRB, ATRI

Feb 8 2007 6:18PM

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• Hot-Mix Asphalt Mixtures for Nevada's Intersections
• Long-Term Performance of Superpave in Specific Pavement Study 9A
• Moisture Susceptibility of Asphalt Mixtures with Known Field Performance: Evaluated with Dynamic Analysis and Crack Growth Model
• New Predictive Models for Viscosity and Complex Shear Modulus of Asphalt Binders: For Use with Mechanistic–Empirical Pavement Design Guide
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• Overlay Tester: A Simple Performance Test for Fatigue Cracking
• Predicting the Resilient Modulus of Asphalt Concrete from the Dynamic Modulus
• Prediction of Fatigue Cracking in Asphalt Pavements: Do We Follow the Right Approach?
• Quantification of Effect of Polymer-Modified Asphalt on Flexible Pavement Performance
• Rational Modeling of Tertiary Flow for Asphalt Mixtures
• Sample Size Requirements for Field Permeability Measurements of Hot-Mix Asphalt Pavements
• Spanish Experience with Gyratory Compactor and Indirect Tensile Test in Design and Control of Cold Recycled Asphalt Pavement
• Surface Free Energy to Identify Moisture Sensitivity of Materials for Asphalt Mixes