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How to investigate the tensile behaviour of early age concrete?



Author(s): E. Roziere, R. Cortas, A. Loukili
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: 377-385
Total Pages: 8
Language: English


Abstract: The assessment of the tensile properties of early-age concrete is essential for reducing the risk of cracking due to restrained shrinkage. The tensile strain capacity of concrete, which was defined as a measure of the ability of the material to withstand deformation without cracking, is useful but few data can be found in available literature and the measure of the displacements on concrete is sometimes questionable. New direct tensile testing apparatus and experimental procedure were designed to provide reliable data on concrete specimens. The measure of displacements was deduced from digital image correlation. They enabled determining a stress-strain relationship of concrete before cracking. The results showed a very rapid increase of strength from the end of setting. Even if the values are closely linked to the boundary conditions and experimental procedure, the significant effect of gravel type could be highlighted.


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