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Asphalt Concrete Rutting Modeling Using Hamburg Wheel Tracking Device (HWTD)
The corresponding study analyzes and predicts the rutting behavior of asphalt concrete (AC) mixtures, using the Hamburg wheel tracking device (HWTD) and the principles of Weibull distribution. Twenty AC mixtures differing on hot mix asphalt/warm mix asphalt (HMA/WMA), gradation, and different types of aggregates and binder performance grades (PGs) were studied at three different test temperatures (40, 50, and 60°C). The failure rate function given by the Weibull equation was used in order to model and predict rutting in HWTD test for the different combination of studied parameters in AC mixtures. Shape and scale parameters were defined for each mixture at different test temperatures. Linear regressions were used in order to define shape and scale parameters in function of test temperature for each of the studied mixtures parameter. A generalized Weibull failure rate equation was defined to determine rutting in function of the Weibull parameters and number of wheel passes for the different combinations of type of mixture, gradation, aggregate, and binder PG in AC mixtures. An overall good correlation was observed between the fitted model and the actual HWTD test results. Shape and scale parameters showed relationship with creeping and compaction phase.
Asphalt Concrete Rutting Modeling Using Hamburg Wheel Tracking Device (HWTD)
The corresponding study analyzes and predicts the rutting behavior of asphalt concrete (AC) mixtures, using the Hamburg wheel tracking device (HWTD) and the principles of Weibull distribution. Twenty AC mixtures differing on hot mix asphalt/warm mix asphalt (HMA/WMA), gradation, and different types of aggregates and binder performance grades (PGs) were studied at three different test temperatures (40, 50, and 60°C). The failure rate function given by the Weibull equation was used in order to model and predict rutting in HWTD test for the different combination of studied parameters in AC mixtures. Shape and scale parameters were defined for each mixture at different test temperatures. Linear regressions were used in order to define shape and scale parameters in function of test temperature for each of the studied mixtures parameter. A generalized Weibull failure rate equation was defined to determine rutting in function of the Weibull parameters and number of wheel passes for the different combinations of type of mixture, gradation, aggregate, and binder PG in AC mixtures. An overall good correlation was observed between the fitted model and the actual HWTD test results. Shape and scale parameters showed relationship with creeping and compaction phase.
Asphalt Concrete Rutting Modeling Using Hamburg Wheel Tracking Device (HWTD)
Larrain, Matias M. Mendez (author) / Tarefder, Rafiqul A. (author)
International Airfield and Highway Pavements Conference 2019 ; 2019 ; Chicago, Illinois
2019-07-18
Conference paper
Electronic Resource
English
| British Library Online Contents | 2016