TY - JOUR
T1 - Modelling of hygro-thermal behaviour of concrete at high temperature with thermo-chemical and mechanical material degradation
AU - Gawin, D.
AU - Pesavento, F.
AU - Schrefler, B. A.
N1 - Funding Information:
This work has been partially funded by EU project “UPTUN––Cost-Effective Sustainable and Innovative Upgrading Methods for Fire Safety in Existing Tunnels” and Cofin ex 40% MURST no. 9908188987_N3, 1999. The authors are grateful to Prof. C. Majorana from University of Padova, as well as to Dr. M. Giannuzzi and Dr. A. Miliozzi from C.R.E. “Casaccia” ENEA (Italy) for their collaboration.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2003/3/28
Y1 - 2003/3/28
N2 - A mathematical model for analysis of hygro-thermal behaviour of concrete as a multi-phase porous material at high temperatures, accounting for material deterioration, is presented. Full development of the model equations, starting from the macroscopic balances of mass, energy and linear momentum of single constituents is presented. Constitutive relationships for concrete at high temperature, including those concerning material damage, are discussed. The classical isotropic non-local damage theory is modified to take into account the mechanical- and the thermo-chemical concrete damage at high temperature. The final form of the governing equations, their discretised FE form, and their numerical solution are presented.The results of two numerical examples, concerning fire performance of 1-D and 2-D HPC structures, are discussed.
AB - A mathematical model for analysis of hygro-thermal behaviour of concrete as a multi-phase porous material at high temperatures, accounting for material deterioration, is presented. Full development of the model equations, starting from the macroscopic balances of mass, energy and linear momentum of single constituents is presented. Constitutive relationships for concrete at high temperature, including those concerning material damage, are discussed. The classical isotropic non-local damage theory is modified to take into account the mechanical- and the thermo-chemical concrete damage at high temperature. The final form of the governing equations, their discretised FE form, and their numerical solution are presented.The results of two numerical examples, concerning fire performance of 1-D and 2-D HPC structures, are discussed.
KW - Concrete
KW - High temperature
KW - Hygro-thermo-mechanical behaviour
KW - Mechanical damage
KW - Numerical model
KW - Thermo-chemical damage
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U2 - 10.1016/S0045-7825(03)00200-7
DO - 10.1016/S0045-7825(03)00200-7
M3 - Article
AN - SCOPUS:0037470869
SN - 0045-7825
VL - 192
SP - 1731
EP - 1771
JO - Computer Methods in Applied Mechanics and Engineering
JF - Computer Methods in Applied Mechanics and Engineering
IS - 13-14
ER -