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Pro088

Effects of curing conditions on crack bridging response of PVA reinforced cementitious matrix



Author(s): E. Esmaeeli, J. Barros, M. Mastali
Paper category: Conference
Book title: 8th RILEM International Symposium on Fiber Reinforced Concrete: challenges and opportunities (BEFIB 2012)
Editor(s): Joaquim A.O. Barros
Print ISBN: 978-2-35158-132-2
e-ISBN: 978-2-35158-133-9
Publisher: RILEM Publications SARL
Pages: 1174 - 1186
Total Pages: 12
Language: English


Abstract: 
The effect of the different curing conditions on the response of fiber crack bridging of PVAECC
is studied. The self compacting PVA-ECC was cast into the moulds to produce four similar
rectangular panels. These panels were kept under different curing conditions for 28 days. The tensile
specimens were cut from these panels, and after executing a notch they were tested under tensile
loading. The stress versus crack opening relationship for the specimens extracted from panels cured
at different conditions is obtained, and the derived results are compared. The dispersion of results, the
stress at crack initiation, the maximum fibers bridging stress and the corresponding crack opening, the
absorbed energy and the fibers bridging stiffness are the investigated parameters. Also macroscopic
images of the fibers in fracture surface are used to interpret the obtained data. As a result of this study
a significant influence of different curing conditions on the fiber crack bridging response was observed.


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