Prediction of drying shrinkage in concrete structures: study of size effect

Title: Prediction of drying shrinkage in concrete structures: study of size effect
Author(s): F. Benboudjema, and J.-M. Torrenti
Paper category : conference
Book title: International RILEM Conference on Advances in Construction Materials Through Science and Engineering
Editor(s): Christopher Leung and K.T. WAN
ISBN: 978-2-35158-116-2
e-ISBN: 978-2-35158-117-9
Publisher: RILEM Publications SARL
Publication year: 2011
Pages: 288 - 293
Total Pages: 6
Nb references: 14
Language: English

Abstract: Drying of cement-based materials induces drying shrinkage, which may cause prestress loss or/and cracking if strains are (self or externally) restrained. Drying shrinkage is difficult to predict, since it depends on the material mix, mechanical and hygral boundary conditions, geometry ... This paper focuses on the study of size effect on final drying shrinkage, which is not well documented in the literature. In the Eurocode 2 (European code), a reduction factor is applied for large structure, which is in agreement with experimental data of one campaign (found in the literature). Using numerical simulations, it is shown that the proposed model which takes into account of (aging) creep under capillary pressure (assumed to be the physical mechanism for drying shrinkage), does not predict size effect on final value of drying shrinkage.

Online publication: 2011-10-31
Publication type : full_text
Public price (Euros): 0.00