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Accelerated Life Modeling of Superpave Mixtures

Manandhar, C. / Hossain, M. / Nelson, P. / Hobson, C.

This study focused on reducing duration of the Hamburg wheel-tracking device (HWTD) test. Four fine-graded Superpave mixtures with 12.5-mm Nominal Maximum Aggregate Size (NMAS) were selected for this study. The average number of wheel passes to a 20-mm rut depth in the HWTD tests was used to build accelerated life models with a Weibull distribution. Good consistency between the accelerated life (statistical) model-predicted and observed test results was obtained for the standard load level (705 N) and 60°C test temperature. The HWTD test duration can be reduced to about two hours when higher test temperature is used.

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Accelerated Life Modeling of Superpave Mixtures

Manandhar, C. / Hossain, M. / Nelson, P. / Hobson, C.

This study focused on reducing duration of the Hamburg wheel-tracking device (HWTD) test. Four fine-graded Superpave mixtures with 12.5-mm Nominal Maximum Aggregate Size (NMAS) were selected for this study. The average number of wheel passes to a 20-mm rut depth in the HWTD tests was used to build accelerated life models with a Weibull distribution. Good consistency between the accelerated life (statistical) model-predicted and observed test results was obtained for the standard load level (705 N) and 60°C test temperature. The HWTD test duration can be reduced to about two hours when higher test temperature is used.

Accelerated Life Modeling of Superpave Mixtures

Manandhar, C. / Hossain, M. / Nelson, P. / Hobson, C.

This study focused on reducing duration of the Hamburg wheel-tracking device (HWTD) test. Four fine-graded Superpave mixtures with 12.5-mm Nominal Maximum Aggregate Size (NMAS) were selected for this study. The average number of wheel passes to a 20-mm rut depth in the HWTD tests was used to build accelerated life models with a Weibull distribution. Good consistency between the accelerated life (statistical) model-predicted and observed test results was obtained for the standard load level (705 N) and 60°C test temperature. The HWTD test duration can be reduced to about two hours when higher test temperature is used.

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Title:

Accelerated Life Modeling of Superpave Mixtures

Contributors:

Manandhar, C. (author) / Hossain, M. (author) / Nelson, P. (author) / Hobson, C. (author)

Conference:

Second Transportation & Development Congress 2014 ; 2014 ; Orlando, Florida

Published in:

T&DI Congress 2014 ; 49-58

Publication date:

2014-05-29

ISBN:

DOI:

https://doi.org/10.1061/9780784413586.005

Type of media:

Conference paper

Type of material:

Electronic Resource

Language:

English

Keywords:

Pavement management , Airport and airfield runways , Highways and roads , Transportation engineering , Traffic safety , Transportation management , Urban development , Construction , Logistics , Pavements

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