Multi-physical description of the autogenous deformations of concrete with blast-furnace slag

Author(s): Jérôme Carette, Stéphanie Staquet
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
Publisher: RILEM Publications SARL
Publication year: 2017
Pages: 265-270
Total Pages: 6
Language : English

Abstract: The autogenous deformation includes mechanisms such as chemical shrinkage, self-desiccation and swelling. These contributions are studied through a new decoupling methodology. The effect of temperature and presence of blast-furnace slag on these processes is studied. It is confirmed that the swelling occurring at early age results from the formation of hydration products such as ettringite. The temperature effects include maturity-based considerations, a change in internal relative humidity, as well as a change in the enthalpy of dissolution of ettringite. A unified model is proposed, taking into consideration these processes and their dependency on temperature and the presence of blast-furnace slag.

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

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