DISCRETE MODELING OF SURFACE CRACKING OF DRYING CONCRETES AT DIFFERENT AGES: APPLICATION TO TU1404 RRT CONCRETE

Author(s): Arnaud Delaplace, Clément Vert, Eric Brouard
Paper category: Proceedings
Book title: proceedings of the International RILEM Conference on Materials, Systems and Structures in Civil Engineering Conference segment on Service Life of Cement-Based Materials and Structures
Editor(s): Miguel Azenha, Ivan Gabrijel, Dirk Schlicke, Terje Kanstad and Ole Mejlhede Jensen
ISBN:978-2-35158-171-4
e-ISBN: 978-2-35158-173-5
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 483-492
Total Pages: 10
Language : English

Abstract: The drying process of concrete is a well-known phenomenon occurring at early age when the
concrete is exposed to ambient conditions. The kinetics of drying is strongly linked to the
concrete microstructure, as the water circulates into the paste porosity. In the same way, the
induced drying shrinkage is also linked to the paste porosity through the capillary pressure
developed in the pore network: the pore size distribution is key when dealing with drying
process. This study focuses on the drying process using an analytical model allowing to take
into account a gradient of properties due to the difference of hydration degree. In particular,
the effect of the hydration gradient between the core and the surface of a concrete sample will
be analysed, thanks to the results provided by Round Robin Test of the European action
COST TU1404.

Online publication : 2016
Publication type : full_text
Public price (Euros) : 0.00