EFFECT OF HUMIDITY AND ELEVATED TEMPERATURE ON THE MECHANICAL BEHAVIOR OF CONCRETE

Author(s): Laurie Lacarrière (1), Ponleu Chhun (1), Alain Sellier (1)
Paper category: Proceedings
Book title: SynerCrete’18 International Conference on Interdisciplinary Approaches for Cement-based Materials and Structural Concrete
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: 567-572
Total Pages: 6
Language : English

Abstract: This paper deals with the prediction of the evolution of mechanical behaviour of concrete when it is subjected to high humidity and temperatures. a non linear creep-damage model to assess the mechanical response of the concrete to such solicitations. This model was previously developed for the prediction of concrete behaviour at ambient or moderate temperature. But the effect of combined high humidity and elevated temperature was not investigated up to now.
In this paper, laws are proposed to reproduce the evolution of strengths according to the saturation degree and temperature of concrete. A thermal damage is also introduced in addition to the thermo-activation of creep by temperature. The complete THCM model is validated using tests performed, at different temperatures and relative humidity, on lab specimens and on structural members.

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