コンクリート工学年次大会 2015(千葉)

講演情報

第37回コンクリート工学講演会(A.材料・施工) » フレッシュコンクリート/施工

フレッシュコンクリートⅠ

2015年7月14日(火) 10:15 〜 12:15 第8会場 (1F 103号室)

[1168] Analytical Study on the Thixotropy of Fresh Concrete Using Discrete Element Method

座長(土木):吉野公
座長(建築):大塚秀三
講演者:曹国棟1, 李柱国1, 譚援強2
(1.山口大学理工学研究科 2.Xiangtan University機械工学)

キーワード:thixotropy, fresh concrete, discrete element method, lateral pressure, yield stress

Fresh concrete is a typical thixotropic material with a time-dependent rheological characteristic. In this study, a general Discrete Element Method (DEM) model for fresh concrete was firstly established and the material parameters were calibrated by the rheological test. Then, a thixotropy DEM model of fresh concrete was proposed by introducing a time-dependent particle contact model into the general DEM model. The changes of fresh concrete's lateral pressure on the wall and yield stress with elapsed time were successfully addressed with this thixotropy DEM model.