Damage And Spalling In HP And UHP Concrete
At High Temperature
Author(s)
C.E. Majorana & F. Pesavento
Abstract
Damage and spalling in HP and UHP concrete
at high temperature
C.E. Majorana\ F Pesavento*
' Dipartimento di Costruzioni e Trasporti,
Universitd di Padova, Italy
Abstract
The present work deals with a new model to analyse the behaviour of concrete at
high temperature. For the safety evaluation of concrete structures exposed to
elevated temperature, for instance during a fire or in the case of nuclear accident,
prediction of concrete performance is of great practical importance. In such
conditions concrete, especially high performance and ultra high performance
concrete, may be subject to spalling phenomena which jeopardizes the integrity
of the construction. Spalling involves thermal, hygral and mechanical processes.
Such complex phenomena require a numerical simulation implementing new
mathematical models.
In the model here presented concrete is considered as a multiphase material
consisting of a solid phase, two gas phases and three water phases. The effect of
dama
Keywords
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