Effect of compressive loading on the risk of spalling

Author(s): H. Carré, P. Pimienta, C. La Borderie, F. Pereira, J.-C. Mindeguia
Paper category: Workshop
Book title: Concrete Spalling due to Fire Exposure – Proceedings of the 3rd International Workshop, Paris 2013
Editor(s): P. Pimienta, F. Meftah
Print ISBN: 978-2-7598-1074-1
Publisher: Edp sciences
Pages: 66 - 75
Total Pages: 10
Language: English

Mechanical loading is an important parameter of spalling phenomenon likely to occur in concrete during heating. Several tests in laboratory have shown an increase of the risk of spalling in the compressed areas. In this study, a specific metallic frame has been developed to apply uniaxial and biaxial stresses on slabs during fire tests. Tests carried out on an ordinary concrete (fc₂₈ = 37MPa) exposed to ISO 834-1 temperature curve with several levels of uniaxial loading are presented. No spalling was observed when samples were loaded at 0, 5 and 10MPa. In the opposite, spalling was observed when the compressive stress was increased to 15MPa.

Online publication: 2013
Publication Type: full_text
Public price (Euros): 0.00