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The Role of Fibers During Non-Uniform Drying of Cement Composites



Title: The Role of Fibers During Non-Uniform Drying of Cement Composites
Author(s): Zhen Li, Yun M. Lim, John E. Bolander
Paper category : conference
Book title: International RILEM Workshop on High Performance Fiber Reinforced Cementitious Composites in Structural Applications
Editor(s): G. Fischer and V. C. Li
Print-ISBN: 2-912143-93-4
e-ISBN: 2912143942
Publisher: RILEM Publications SARL
Publication year: 2006
Pages: 135 - 144
Total Pages: 10
Nb references: 9
Language: English


Abstract: The durability of FRCC is affected by structural geometry and boundary conditions, in a manner that often precludes the effective use of planar models of the structural system and environmental exposure. One particular class of durability problems involves moisture movement, due to drying of the cement-based matrix, and the associated shrinkage that can lead to matrix cracking. To design fiber composites to mitigate such durability problems, the actions of the fibers should be understood within the context of the three-dimensional system. This includes an accounting of the spatial and orientation distributions of the fibers, as affected by the production process and the proximity to structural boundaries. This paper reports on results obtained using three-dimensional simulations of FRCC structural components subjected to hygral loadings over time, along with verifications of the results using theory and experimental data. One distinguishing feature of the numerical simulations is the explicit modeling of the individual fibers, and their collective actions, within the FRCC.


Online publication: 2005-05-15
Classification: Durability
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143942.015