168. On the rheological behavior of self-compacting concrete mortar using discrete element method

Title: 168. On the rheological behavior of self-compacting concrete mortar using discrete element method
Author(s): Y.W. Chan, S.H. Hsieh, W.T. Chang
Paper category : conference
Book title: 5th International RILEM Symposium on Self-Compacting Concrete
Editor(s): G. De Schutter and V. Boel
Print-ISBN: 978-2-35158-047-9
e-ISBN: 978-2-35158-088-2
Publisher: RILEM Publications SARL
Publication year: 2007
Pages: 1129 - 1134
Total Pages: 6
Nb references: 9
Language: English

Abstract: In this study, the results of simulation on the rheological behavior of Self-Compacting Concrete (SCC) mortar using three-dimensional Discrete Element Method (DEM) are presented. The feasibility of DEM simulation is verified by the observed flow behavior of SCC using two experimental devices, namely the V-funnel test and the L-shaped box test that have been in reduced scale for mortar. By DEM, SCC mortar is modelled by sets of discrete spherical elements. The contact model between the elements contains a number of mechanicsrelated parameters, such as stiffness, viscous damping ratio, friction coefficient, and bond strength. For speeding up the extensive computations required, an in-house discrete objects simulation system, named IRIS, is used to carry out DEM simulations on a distributed memory cluster system. By choosing appropriate parameters, it is shown that the flow behaviour of SCC mortar experiments can be simulated successfully with DEM.

Online publication: 2009-06-16
Publication type : full_text
Public price (Euros): 0.00