WSEAS Transactions on Heat and Mass Transfer
Print ISSN: 1790-5044, E-ISSN: 2224-3461
Volume 10, 2015
Prediction of Behaviour of Cementitious Composites Under Fire Conditions
Authors: , ,
Abstract: Prediction of non-stationary behaviour of cementitious composites as crucial materials of concrete building structures, at high temperatures, namely under fire conditions contains still a lot of difficulties, related to i) multiphysical analysis, dealing with the coupled heat and (liquid and vapour) mass transfer and related mechanical effects, ii) open questions of existence and uniqueness of formal mathematical solutions, including the convergence of numerical algorithms, iii) design and identification of suitable material characteristics, supportable by rather inexpensive experiments: the macroscopic mass, momentum and energy conservation equations need to exploit available information from micro-structural considerations. This paper discusses common traditional and advanced computational modelling and simulation approaches and shows a possible practical compromise between the model complexity and the reasonable possibility of identification of material characteristics of all components and their changes. An illustrative example confronts computational results from such a simplified model with experimental ones, performed in the specialized laboratory at the Brno University of Technology.
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Pages: 1-8
WSEAS Transactions on Heat and Mass Transfer, ISSN / E-ISSN: 1790-5044 / 2224-3461, Volume 10, 2015, Art. #1