01372814

Component

https://doi.org/10.3141/2296-13

http://scholar.google.com...lick&publication_year=2012

The modeling of asphalt concrete based on continuum damage mechanics (CDM) is an attractive and useful method of determining damage development in hot-mix asphalt (HMA). However, the CDM approach requires the calculation of the convolution integral over the loading duration and creates problems when large amounts of fatigue test data generated from accelerated pavement tests are handled. This study presents an approach to facilitating the calculation of the convolution integral for large amounts of data. Therefore, the approach can be used for pavement performance monitoring. Several asphalt concrete slabs were constructed in a laboratory with a vibratory roller compactor and instrumented with strain gauges and thermocouples. These slabs were tested under the small-scale accelerated loading device called the Model Mobile Load Simulator3. A frequency domain approach was used to analyze the continuous strain data. The constitutive equation in time domain was transformed to a frequency domain with the use of the Fourier transform technique; the pseudostrain and the complex modulus values were determined continuously during the loading. Results indicated that both the pseudostrain and the complex modulus were influenced by the combined effect of loading and temperature. A general trend of reduction of the pseudostiffness and the complex modulus because of these factors was observed in the study. Analysis results indicated that the frequency domain analysis approach was an efficient, better way to handle large amounts of data generated in long-term pavement studies and could be used to determine damage development in HMA as a result of loading.

01457891

12-4308

English

pp 125–134

2012

Transportation Research Record: Journal of the Transportation Research Board

9780309262965

Print

Figures; Photos; References

Accelerated tests; Asphalt concrete; Fatigue (Mechanics); Frequency domain analysis; Hot mix asphalt; Monitoring; Pavement performance

Continuum damage mechanics

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

TRIS, TRB, ATRI

Feb 8 2012 5:23PM

• Asphalt Pavement Analyzer Used to Assess Rutting Susceptibility of Hot-Mix Asphalt Designed for High Tire Pressure Aircraft
• Calibrating and Validating Overlay Tester–Based Fatigue Cracking Model with Data from National Center for Asphalt Technology
• Characterization of Fracture Properties of Asphalt Mixtures as Measured by Semicircular Bend Test and Indirect Tension Test
• Construction of Dynamic Modulus Master Curves with Resilient Modulus and Creep Test Data
• Development of Autonomous Setup for Evaluating Self-Healing Capability of Asphalt Mixtures
• Effect of Mode of Loading on Viscoelastic and Damage Properties of Asphalt Concrete
• Effects of Oxidative Aging on Asphalt Mixture Properties
• Evaluation of Asphalt Mixture Performance Tester: Utah Experience
• Hot-Mix Asphalt Permanent Deformation Evaluated by Hamburg Wheel Tracking, Dynamic Modulus, and Repeated Load Tests
• Incremental Model for Prediction of Permanent Deformation of Asphalt Concrete in Compression
• Method to Quantify Healing in Asphalt Composites by Continuum Damage Approach
• Modeling Thermal Stress in Asphalt Mixtures Undergoing Glass Transition and Physical Hardening
• Scanning Laser Detection System Used to Measure Propagation of Fatigue Damage of Asphalt Mixes
• Simplified Viscoelastic Continuum Damage Model as Platform for Asphalt Concrete Fatigue Analysis