Detecting and Expressing of Asphalt Materials Modulus Considering Temperature Effect

Xiao Hua Luo; Qing Yang; Xin Qiu; Shang Lin Xiao

doi:10.4028/www.scientific.net/KEM.667.347

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 667Detecting and Expressing of Asphalt Materials...

Detecting and Expressing of Asphalt Materials Modulus Considering Temperature Effect

Abstract:

Asphalt mixtures have a highly sensitive and dependent on temperature. The typical modulus values of asphalt mixtures vary dramatically at different temperatures. Therefore, adjusting the modulus values of asphalt pavements of different testing temperatures to that of the criterion temperature condition is an important task to sustain asphalt mixtures modulus based the structural bearing capacity estimation of asphalt pavements comparable between time and space. According to the dynamic finite element numerical analysis method and the multivariate nonlinear regression analysis technique, the paper firstly established the back calculation model of asphalt mixtures modulus in term of the relationship between asphalt moduli and deflection basin parameters. Secondly, considering the correlation between the temperature at the middle of asphalt wearing course and the asphalt mixture modulus, the conversion analysis procedure of asphalt mixtures moduli of different temperatures was presented based on BELLS3 temperature adjustment coefficient method. Finally, the in-service monitoring over the existing pavements was conducted to test the validity of the procedure. The research provides a practical basis for evaluating pavement performance of asphalt wearing mixtures and a theory support for overlaying thickness design of asphalt pavements.

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Periodical:

Key Engineering Materials (Volume 667)

Pages:

347-352

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.667.347

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Online since:

October 2015

Authors:

Xiao Hua Luo, Qing Yang*, Xin Qiu, Shang Lin Xiao

Keywords:

Asphalt Mixtures, Numerical Analysis, Temperature Sensitivity

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