Autogenous shrinkage measurements on cement pastes: influence of W/C, cement fineness, and superplasticizer dosage

Author(s): António Bettencourt Ribeiro, Arlindo Gonçalves
Paper category: Proceedings
Book title: Proceedings of the 2nd International RILEM/COST Conference on Early Age Cracking and Serviceability in Cement-based Materials and Structures Volume 1
Editor(s): Stéphanie Staquet and Dimitrios Aggelis
ISBN:978-2-35158-199-5
e-ISBN:978-2-35158-198-8
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 203-208
Total Pages: 6
Language : English

Abstract: The autogenous shrinkage of cementitious materials has become a more relevant issue due to the use of concrete mixtures with very low w/c. The resulting strain may induce cracks that will lead to a decrease of concrete strength and durability. The ability to predict the occurrence of cracks is dependent on the correct characterization of the strain of the material, as well as on its viscoelastic properties. The present paper is focused on the measurement of the cement paste strain (under autogenous conditions), which is the main phenomenon to be controlled to avoid early age cracking in such materials. The selected parameters were cement fineness, w/c and superplasticizer dosage and type.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00