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Pro083

A lattice model for fracture and mass transport in concrete



Author(s): P. Grassl, C. Fahy, D. Gallipoli, J.E. Bolander
Paper category: Conference
Book title: 2nd International conference on Microstructural-related Durability of Cementitious Composites
Editor(s): Guang Ye, K. Van Breugel, Wei Sun, Changwen Miao
Print ISBN: 978-2-35158-129-2
e-ISBN: 978-2-35158-123-0
Publisher: RILEM Publications SARL
Pages: 969 - 977
Total Pages: 8
Language: English


Abstract: 
A recently proposed dual mechanical and transport lattice approach based on Delaunay and Voronoi tessellations is used to model water transport in cracked concrete. Principles originally developed for partially saturated soils are applied to model the absorption of water into concrete based on capillary action. Cracking is modelled by the structural lattice using a damage mechanics constitutive model. The change of conductivity of the transport model due to the crack opening is described by a cubic law. Spatial distributions of water content in cracked and uncracked concrete are simulated, as a function of time, and the results are compared to experimental data reported in the literature.


Online publication: 2013
Publication Type: full_text
Public price (Euros): 0.00