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Creep of concrete at very early age: a microstructural approach using the theory of percolation



Author(s): F. Benboudjema, J.-M. Torrenti and L. Stefan
Paper category: Conference
Book title: 2nd International Conference on Microstructural-related Durability of Cementitious Composites
Editor(s): Guang Ye, K. van Breugel, Wei Sun and Changwen Miao
Print ISBN: 978-2-35158-129-2
e-ISBN: 978-2-35158-123-0
Publisher: RILEM Publications SARL
Pages: 368 – 376
Total Pages: 9
Language: English


Abstract: The creep of concrete at early age is of particular importance to predict risks of cracking occurrence. As concrete evolves from a liquid phase to a solid one, a percolation threshold occurs. Using a specific algorithm (including the fact that hydrates are needed to glue the solid phase together), a percolated cluster is obtained, which evolves with the degree of hydration. In order to predict creep compliance at early-age, one considers that only C-S-H creep, following the microprestress theory [1]. Finite element calculations are performed for different water to cement ratios. Besides, effects of porosity and C-S-H are discussed.


Online publication: 2012
Publication Type: full_text
Public price (Euros): 0.00