Print Email Facebook Twitter Simulation of macroscopic behavior of a self-compacting mixture based on DEM Title Simulation of macroscopic behavior of a self-compacting mixture based on DEM Author Hoornahad, H. Koenders, E.A.B. Faculty Civil Engineering and Geosciences Department Structural Engineering Date 2013-12-31 Abstract Since the early 20th century, the necessity of modeling and monitoring fresh concrete behavior has been recognized by the industry with the objective to ensure adequate mechanical properties and a proper durability of concrete structures. Due to the rapid development of computer technology, the applications of computational simulation tools in the field of concrete technology has significantly increased and help us to understand the mechanisms of rheological systems. The development of proper rheological models and suitable numerical methods are considered as basic needs for a thorough understanding of the flow properties. The main challenge is finding a quantitative correlation between the model parameters and the properties and proportions of the mix ingredients. This paper presents a numerical approach for macroscopic behavior of a fresh self-compacting mixture using Discrete Element Method (DEM). The employed research is based on a conceptual idea where the grain-paste interaction is explicitly modelled as an interactive two-phase system. Each mixture is considered to be an assembly of “grain-paste” systems, which can be characterized according to the mix composition based on the “excess paste theory”. The macroscopic behavior is evaluated based on the slump flow test results. Simulations and experimental laboratory test results show good agreement. Subject discrete element method (DEM)excess paste theoryflow analysisfresh self-compacting mixtureslump flow testtwo-phase elementtwo-phase model To reference this document use: http://resolver.tudelft.nl/uuid:cf5222ef-6711-4160-8ff1-c351c2514a26 Publisher Iowa State University Source SCC 5th North American Conference on the Design and Use of Self-Consolidating Concrete, Chicago (USA), May 12-15, 2013; Authors version Part of collection Institutional Repository Document type conference paper Rights (c) 2013 The Authors Files PDF 296179.pdf 660.91 KB Close viewer /islandora/object/uuid:cf5222ef-6711-4160-8ff1-c351c2514a26/datastream/OBJ/view