Early age behavior of massive concrete structures: from experiments to numerical simulations

Author(s): F. Benboudjema, M. Briffaut, A. Hilaire, J.-M. Torrenti and G. Nahas
Paper category: conference
Book title: Crack Control of Mass Concrete and Related Issues concerning Early-Age of Concrete Structures
Editor(s): F. Toutlemonde and J.-M. Torrenti
Print ISBN: 978-2-35158-125-4
e-ISBN: 978-2-35158-126-1
Publisher: RILEM Publications SARL
Publication year: 2012
Pages: 21 - 32
Total Pages: 12
Language: English

Abstract: Cracking at early-age is an important problem in massive concrete structures. Indeed, autogenous and thermal shrinkage may be (partially) restrained by previous lift, due to temperature gradient ... This cracking depends highly on the concrete mix(impacting shrinkages, Young’s modulus, creep ...), the (mechanical, thermal, wind ...) boundary conditions ... It is difficult to study it with an experimental device in laboratory conditions, due to the needed massive character of the concrete structures which is needed in order to be representative. Therefore, an original device has been developed consisting of heating a brass ring, with concrete cast around. The results are then used to validate the adopted model. Creep in compression and tension, including the effect of temperature has been investigated. Some numerical simulations are performed in order to highlight the influence of creep, its interaction with cracking and boundary conditions. Finally, the model is applied to the CEOS test.

Online publication: 2012-07-20
Publication Type: full_text
Public price (Euros): 0.00