01476119

Component

https://doi.org/10.3141/2367-09

http://scholar.google.com...egui&publication_year=2013

The structural response of a flexible pavement typically is modeled with the multilayer linear elastic theory. This theory is applicable to almost all mechanistic–empirical design procedures but is also used in other fields of pavement engineering, such as in the interpretation of deflection data for assessing a pavement’s structural condition. The applicability of this theory, even with some limitations, has been validated for new or undamaged pavements when the hypothesis of continuity is realistic. However, for modeling the structural response of damaged pavements, the presence of discrete cracks is not compatible with continuum mechanics theories. Three flexible sections at the CEDEX Transport Research Center test track were instrumented with sensors. The structural response under moving vehicles was systematically measured for different response variables during a full-scale experiment in which 1.3 million loads were applied. The structural response measured at the beginning of the experiment, when asphalt damage was null, was used as a reference for comparison of the evolution of response during the test. The test showed that the evolution of the response variables could be explained by continuum mechanics, in particular by linear elasticity, as soon as asphalt damage was uniformly distributed in the material. When discrete cracking appeared, the response started to deviate from the response predicted by multilayer linear elastic models. Adoption of a rational approach for determination of the modulus of the asphalt layers is shown to be important.

01501242

13-4458

English

0000-0002-3614-2858

pp 84–94

2013

Transportation Research Record: Journal of the Transportation Research Board

9780309286909

Print

Figures (12) ; References (10)

Cracking of asphalt concrete pavements; Flexible pavements; Structural analysis; Structural mechanics; Test tracks

Highways; Pavements; I31: Bituminous Binders and Materials; I32: Concrete

TRIS, TRB, ATRI

Feb 5 2013 12:52PM

• Case Study for Evaluating Benefits of Pavement Research: Final Results
• Characteristics of Base Friction for Concrete Pavement Structure in China: Experimental Study
• Cracking Behavior of Continuously Reinforced Concrete Pavements in Belgium: Characterization of Current Design Concept
• Detection of Subsurface Joint Deterioration: Blind Test Comparison of Ultrasound Array Technology with Conventional Nondestructive Methods
• Development of Texture Measurement System Based on Continuous Profiles from Three-Dimensional Scanning System
• Enhancements to Punchout Prediction Model in Mechanistic–Empirical Pavement Design Guide Procedure
• Global Sensitivity Analysis of Jointed Plain Concrete Pavement Mechanistic–Empirical Performance Predictions
• Matched Filtering Algorithm for Pavement Cracking Detection
• Mobile Cross-Slope Measurement Method Using Lidar Technology
• Modeling of Slab–Foundation Friction in Jointed Concrete Pavements Under Nonlinear Thermal Gradient or Traffic Loads
• Optimal Averaging and Localized Weak Spot Identification of Traffic Speed Deflectometer Measurements
• Spectral Analysis of Surface Wave Scanning for Identifying Debonding Conditions Between Hot-Mix Asphalt Layers in Pavements
• Three-Dimensional Finite Element Modeling of Instrumented Airport Runway Pavement Responses