OpenFOAM casting solver with segregation

Author(s): Jon Elvar Wallevik, Wassim Mansour and Olafur H. Wallevik
Paper category: Proceedings of the International RILEM Conference Materials, Systems and Structures in Civil Engineering 2016 Segment on Fresh Concrete
Editor(s): Lars N. Thrane, Claus Pade, Oldrich Svec and Nicolas Roussel
ISBN: 978-2-35158-184-1
e-ISBN: 978-2-35158-185-8
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 136-145
Total Pages: 10
Language : English

Abstract: Variable aggregate distribution can increase the local porosity and thus the permeability of concrete. Varying content of mortar causes heterogeneous shrinkage and creep in a given concrete element. Moreover, high heterogeneity will increase the probability that these phenomenon yields high internal stress gradients and thus cracking. In this work, a status is given about the development of a concrete casting solver within the OpenFOAM framework that can also calculate the coarse aggregate distribution as a function of time. The intention is to predict the effect of segregation during casting for a given concrete element. Attempt is being made to include the shear rate induced particle migration into the solver. Example of simulation runs of the current software version is presented

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00