APPLICABILITY OF RHEOLOGICAL MODELS TO DYNAMIC MECHANISTIC ANALYSIS OF ASPHALT MIXTURES

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  • NISHIZAWA Tatsuo
    社団法人土木学会 石川工業高等専門学校環境都市工学科
  • KASAHARA Atsushi
    社団法人土木学会 北海道工業大学社会基盤工学科
  • HIMENO Kenji
    社団法人土木学会 中央大学理工学部土木工学科

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  • アスファルト混合物の動的力学解析へのレオロジーモデルの適用性
  • アスファルト コンゴウブツ ノ ドウテキ リキガク カイセキ エ ノ レオロジー モデル ノ テキヨウセイ

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Abstract

In this study, the generalized Voigt model is employed to represent the dynamic behavior of asphalt mixtures. Parameter values of the rheological model were identified using a method based on a system identification approach. From the results of parameter identification using dynamic flexural test data, it was found that the frequency range that the model covers broadens with increasing the number of elements and that the eight elements model covers the range of 0.01 to 100Hz. The estimated parameters showed that the elastic moduli of the model are independent on temperature, while viscous moduli decrease with temperature rising.

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