The Effects of Nonlinear Viscosity of Asphalt Concrete in Vibration Compaction Process
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Abstract
The paper evidences the results of experimental and numerical research on the dynamic compaction of asphalt mixtures applied in the road wear layer. There are studied two cases for 8 and 15 cm layer thickness of asphalt concrete, the linear and nonlinear behaviors when studying the viscosity rheological aspect at 120 ÷ 160 °C temperature range, subject to technological vibrations of self-propelled vibratory roller. As example, there are considered the required power values for vibration in the two considered cases and the obtained results prove distinct different values for the compaction process characteristics, in linear and nonlinear regimes.
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