Journal
MATERIALS & DESIGN
Volume 45, Issue -, Pages 421-429Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2012.07.070
Keywords
Concrete; Elastic behaviour; Non-destructive testing (NDT)
Categories
Funding
- company IMCE
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When exposed to fire, Young's modulus of concrete degrades. Thus, exact knowledge of temperature-dependent reduction is important to determine the fire-resistance of concrete or composite members. Nevertheless, existing material properties for the Young's and shear modulus of concrete are linked with some incertitudes. In addition, normative regulations lack information on the temperature-dependent Poisson's ratio. In an attempt to overcome some of the existing uncertainties, experimental work was conducted to investigate elastic material properties of fire-exposed concrete. For this purpose, the Impulse Excitation Technique was used as an innovative testing technique. Based on experimental results, the authors propose new elastic material formulations for fire-exposed concrete. (C) 2012 Elsevier Ltd. All rights reserved.
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