Chapter
Apr 26, 2012
Sensitivity of Mixture Performance Properties to Changes in Asphalt Mixture Type: Case Study
Authors: Louay N. Mohammad, Zhong Wu, and Chris AbadieAuthor Affiliations
Publication: Geotechnical Engineering for Transportation Projects
Abstract
This paper presents a sensitivity study on mechanistic responses of asphalt mixtures measured from two Superpave Shear Tester (SST) tests: the frequency sweep at constant height (FSCH) and repeated shear at constant height (RSCH) tests. Three special case studies were included in the analysis. A new critical complex shear modulus, G*crit, derived from the FSCH test data, was introduced in this paper. Results indicated that using a single complex shear modulus value at one test frequency from the FSCH test could provide inconsistent ranking for mixtures with different temperature sensitivity. However, the calculated G*crit stiffness values were found fairly sensitive to different mixture types and binder types considered. The critical complex shear modulus, G*crit, is suggested to be used in rutting performance analysis.
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Information & Authors
Information
Published In
Geotechnical Engineering for Transportation Projects
Pages: 986 - 995
Copyright
© 2004 American Society of Civil Engineers.
History
Published online: Apr 26, 2012
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ASCE Technical Topics:
- Analysis (by type)
- Binders (material)
- Case studies
- Engineering fundamentals
- Engineering materials (by type)
- Gravels
- Infrastructure
- Laboratory tests
- Material mechanics
- Material properties
- Materials characterization
- Materials engineering
- Mechanical properties
- Methodology (by type)
- Mixtures
- Pavement condition
- Pavement rutting
- Pavements
- Research methods (by type)
- Sensitivity analysis
- Shear modulus
- Shear tests
- Tests (by type)
- Transportation engineering
Authors
Affiliations
Louay N. Mohammad
M.ASCE
Associate Professor, Civil and Environmental Engineering Dept and Louisiana Transportation Research Center, Louisiana State University, 4101 Gourrier Ave, Baton Rouge, LA 70808
Zhong Wu
Research Associate, Louisiana Transportation Research Center, 4101 Gourrier Ave, Baton Rouge, LA 70808
Chris Abadie
Material Research Administrator, Louisiana Transportation Research Center, Louisiana Department of Transportation and Development, 4101 Gourrier Ave, Baton Rouge, LA 70808
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