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Development of a new testing procedure to measure thermal fatigue performance of asphalt concrete
Date
2020-11
Author
Shabani, Reza
Metadata
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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In the scope of this study, a new test procedure is developed to investigate the thermal fatigue performance of asphalt concrete materials. To achieve this, test samples are compacted using different mixtures to be designed according to the Superpave mix design method. In the testing program, compacted samples are cut to produce beam specimens for thermal coefficient tests and semicircular specimens for thermal fatigue tests. Analysis of variance (ANOVA) and Multivariate analyses are both used to evaluate the effect of test variables on derived parameters characterizing the thermal coefficients and the thermal fatigue performance of the specimens. Results of ANOVA indicate that aggregate type is the most significant factor for the thermal coefficient of asphalt concrete. Asphalt type, aggregate type, gradation, frequency, aging and rest time are also significant design factors for thermal fatigue according to the results of multivariate analyses. However, among the test variables studied, loading frequency and asphalt type seem to be highly effective factors governing the behavior of asphalt concrete against thermal fatigue.
Subject Keywords
Asphalt Concrete
,
Thermal Coefficient
,
Thermal Fatigue
,
Semicircular Specimen
URI
https://hdl.handle.net/11511/69228
Collections
Graduate School of Natural and Applied Sciences, Thesis