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Retarded elasticity and instantaneous elasticity of asphalt

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Abstract
This paper studies the creep of asphalt, taken place at the stress impact and measured by the sheet shear rheometer. It is found that the creep of the asphalt consists of three parts: instantaneous elastic deformation; retarded elastic deformation; and viscous flow. It is also discovered that the Maxwell model is not suitable for describing the rheological behavior of asphalt because the elastic deformation of asphalt develops gradually with time. Naramura model is proposed to characterize the rheological property of asphalt. Parameter C and Parameter S are suggested to describe the visco-elastic property and the termperature sensitivity in the present study.
Date
0/1988
Author(s)
Jin Shuxin; Xu Xhaodon; Wang Qihong
Page(s)
355-366
Keyword(s)
asphalt creep; stress impact; sheet shear rheometer; elastic deformation; viscous flow; Maxwell model; Naramua model


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