AGGREGATE SHAPE EFFECTS ON THE MECHANICAL PROPERTY OF CONCRETE UNDER TENSILE LOADING: (1) SIMULATION OF ONE PARTICLE SYSTEM

摘要：

　　Investigations on the mechanical properties of concrete by computational modeling mostly were based on the meso-structure of concrete with spherical particles in the past decades.It may result in a significant discrepancy in simulations by ignoring the aggregate shape effects.In this study, the aggregate shape effects on the mechanical properties of concrete under tensile loading are explored by 3D numerical modeling.Preliminary simulations are carried out on one particle system.The meso-structures of one spherical aggregate, one ellipsoidal aggregate and one irregular shaped aggregate are constructed respectively.Then, the constructed meso-structures are digitalized into voxels, and 3D lattice fracturing analysis is performed on the digitalized meso-structures by applying tensile displacement.In this study, the load-displacement curve, load at first crack, tensile strength and crack propagation are presented and discussed.

作者: Lin Liu Huisu Chen Zhigang Zhu Zhiwei Qian

作者单位: College of Civil and Transportation Engineering,Hohai University,Nanjing 210098,China Jiangsu Key Laboratory of Construction Materials,School of Materials Science and Engineering,Southea Faculty of Civil Engineering and Geosciences,Delft University of Technology,2628CN Delft,The Netherl

会议类型: 国际会议

会议名称: The Fourth RILEM International Symposium on Concrete Modelling (CONMOD 2014)(第四届RILEM混凝土材料建模国际会议)

会议地点: 北京

会议语种:英文

页码: 290-296

在线出版日期: 2014-10-12（万方平台首次上网日期，不代表论文的发表时间）