01044228

Component

https://doi.org/10.3141/2001-01

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

It is well known that fatigue cracking is not just a material problem; it also correlates highly with pavement structure and environmental and traffic conditions. This unique characteristic highlights the importance of a simple performance test (SPT) that can be used for daily hot-mix asphalt (HMA) mixture design and also for predicting fatigue cracking. This paper investigates the use of the Texas Transportation Institute’s overlay tester (OT) as an SPT for fatigue cracking. Fatigue cracking occurs in two stages: crack initiation and crack propagation. However, as noted in this paper, crack initiation is theoretically related to crack propagation. Therefore, the OT that characterizes mainly crack propagation can be used for fatigue cracking. To validate experimentally the OT for fatigue cracking, the OT results were compared with laboratory bending beam fatigue test and field accelerated pavement fatigue test results from the FHWA’s accelerated loading facility test site. Positive results were obtained. In addition, other requirements (e.g., cost-related) for being an SPT are discussed. On the basis of all findings, the OT meets most requirements for being an SPT for fatigue cracking. Potential application of the OT to HMA mixture design also is proposed.

01082338

English

pp 1-8

2007

Transportation Research Record: Journal of the Transportation Research Board

9780309104272

Print

Figures (8) ; Photos (2) ; References (17) ; Tables (2)

Cracking; Fatigue tests; Field tests; Hot mix asphalt; Laboratory tests; Mix design; Overlays (Pavements); Pavement performance; Testing equipment

U.S. Federal Highway Administration Accelerated Loading Facility

Crack propagation; Simple performance tests

Highways; Materials; Pavements; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials

TRIS, TRB

Feb 8 2007 6:19PM

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• Estimating Directional Permeability of Hot-Mix Asphalt by Numerical Simulation of Microscale Water Flow
• Evaluating Georgia’s Compaction Requirements for Stone Matrix Asphalt Mixtures
• Hot-Mix Asphalt Mixtures for Nevada's Intersections
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• 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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• 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