Physical evolution of the interface of fresh concrete/formwork from placement to setting time

Author(s): Typhanie Craipeau, Arnaud Perrot, Fabrice Toussaint, Thibaut Lecompte
Paper category: Proceedings
Book title: SynerCrete’18: Interdisciplinary Approaches for Cement-based Materials and Structural Concrete: Synergizing Expertise and Bridging Scales of Space and Time Vol. 1 & 2
Editor(s): Miguel Azenha, Dirk Schlicke, Farid Benboudjema, Agnieszka Jędrzejewska
ISBN: 978-2-35158-202-2
e-ISBN: 978-2-35158-203-9
Publisher: RILEM Publications SARL
Publication year: 2018
Pages: 291-296
Total Pages: 6
Language : English

Abstract: Cement hydration induces water consumption which induces a reduction of the capillary pressure in the concrete. The equilibrium of pressure implies an increase of the granular stress which is able to transmit shear stress to any support. Slipforming process is characterized by a continuous moving of the formwork, which creates adhesion phenomena and potential damages which have to be assessed and ideally reduced. Experimental devices have been designed in order to evaluate the friction at this interface during the first hydration period. The role of pore water pressure is investigated and controlled in order to separate the influence of pore water pressure and hydrates formation.

Online publication : 2018
Publication type : full_text
Public price (Euros) : 0.00