Computational durability mechanics of fiberreinforced cement composites

Title: Computational durability mechanics of fiberreinforced cement composites
Author(s): J.E. Bolander and A.S. Joshi
Paper category : conference
Book title: 2nd International RILEM Conference on Strain Hardening Cementitious Composites (SHCC2-Rio)
Editor(s): R.D. Toledo Filho, F.A. Silva, E.A.B. Koenders and E.M.R. Fairbairn
ISBN: 978-2-35158-120-9
e-ISBN: 978-2-35158-121-6
Publisher: RILEM Publications SARL
Publication year: 2011
Pages: 339 - 346
Total Pages: 8
Nb references: 15
Language: English

Abstract: Crack width and spacing affect the mass transport properties of fiber reinforced cement composites (FRCC), and thus their role in producing durable structural members. Cracking may develop due to mechanical loadings or the volume instabilities that commonly occur in cement-based materials at early ages. This paper reviews recent developments of a lattice-based model of FRCC in which individual fibers, and their interactions with the matrix phase, are explicitly represented. As part of ongoing research, these calculations are being coupled with a dual lattice, on which the mass transport properties of the composite are modeled. This coupled analysis will facilitate the study of crack-assisted flow, as it is affected by the width and spacing of cracks. In addition, a conceptual framework is presented for the analysis of strength degradation of FRCC exposed to aggressive environments. A simplified, generic representation of damage serves to demonstrate the capabilities of this approach, which can be further developed to consider specific forms of environmental attack.

Online publication: 2012-01-25
Publication type : full_text
Public price (Euros): 0.00

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