FraMCoS 4 2001 Cachan, France

Constitutiverelationsfornumericalanalysisofstress deformationbehaviorofconcrete subjectedto thermalloads

On the basis of foregoing experimental and the numerical investigations a simple and an ad- vanced material law for concrete under thermal load were developed. The advanced material law is based on a rheological-statistical, physically sound material model, whereas the…

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Year 2001
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Abstract

On the basis of foregoing experimental and the numerical investigations a simple and an ad- vanced material law for concrete under thermal load were developed. The advanced material law is based on a rheological-statistical, physically sound material model, whereas the constitutive relations of the simple ma- terial law are purely empirical. Further, a procedure to take into account the heterogeneity of concrete throughout the structure was developed. The simple material law was verified by the simulation of the bend tests, which had been performed at different temperatures. Afterwards it was used for a numerical prediction of the cracking behavior of a concrete slab subjected to a sudden cooling. The obtained results were checked by means of full-scale experiments.