Dependence between capillary stress and autogenous shrinkage for high-strength cement pastes

Title: Dependence between capillary stress and autogenous shrinkage for high-strength cement pastes
Author(s): S. Zhutovsky, K. Kovler
Paper category : conference
Book title: International RILEM Symposium on Concrete Modelling - ConMod '08
Editor(s): E. Schlangen and G. De Schutter
Print-ISBN: 978-2-35158-060-8
e-ISBN: 978-2-35158-076-9
Publisher: RILEM Publications SARL
Publication year: 2008
Pages: 595 - 602
Total Pages: 8
Nb references: 15
Language: English

Abstract: Autogenous shrinkage of cement paste is responsible for early-age cracking of highperformance concrete (HPC) and should be properly predicted in order to assess the risk of cracking in HPC elements. Capillary depression is assumed to be the major driving force of autogenous shrinkage. Therefore, stress/strain dependence between capillary depression and autogenous shrinkage is the principal part of an autogenous shrinkage modeling. In this paper, the stress/strain relationship between capillary depression in sealed cement pastes made at water to cement ratios of 0.21 - 0.33 and their autogenous shrinkage is discussed. Capillary stresses are calculated through relative humidity measurements.

Online publication: 2009-06-15
Publication type : full_text
Public price (Euros): 0.00