STUDY ON DYNAMIC MODEL OF BINGHAM'S FLUID SUBJECTED TO VIBRATION

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  • 振動下のビンガム流体の力学モデルに関する考察
  • シンドウカ ノ ビンガム リュウタイ ノ リキガク モデル ニ カンスル コウ

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There are few studies on the consolidation and consistency of fresh concrete subjected to vibration, and the changing properties of consistency by vibration have not been explained theoretically. The purpose of this study is to establish the theoretical method predicting the flow behavior of fresh concrete subjected to vibration. In this paper, the behavior of a Bingham's fluid subjected to vibration is investigated from Theological and mechanical view points. Generally, the phenomenon that fresh concrete becomes more flowable by vibration is considered to be resulted from the apparent change of properties of the suspension material, but in this study, it is assumed that the consistency curve of a homogeneous material subjected to vibration does not change. In Bingham's fluid subjected to vibration, larger strain rate occurs compared with that under the same static shear stress because of vibrating stress, and average consistency curve under vibration can be calculated The average consistency curve measured in the sphere lifting test under vibration is obtained, and the results are compared with experimental ones in this paper.

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