شبكة التخطيط العمراني بسم الله الرحمن الرحيم
للكاتبين Abdelaziz Benmarce1, Benouis Abdelhalim1 and Benmehidi Nadia2
1 Civil Eng. Faculty of Science & Eng., University of Guelma, , Algeria
2Faculty of Eng., University of Annaba, El Hadjar S/Amar Annaba, Algeria
ABSTRACT
Explosive spalling can threaten the integrity of the whole structure and could lead to total
structural collapse. This raises serious concerns about studying this phenomenon and identifying
the influencing factors and methods of liquidations. Among the factors that have been identified as
influencing spalling of high strength concrete structures subjected to fire, some are related to material
properties, such as porosity, tensile strength, thermal elongations, and moisture content or thermal
properties.
Other factors, although directly influenced by the material properties are related to the structure, the stress
distribution depending on the loading and support system, and the presence of steel rebars. Indeed, in this
paper, the support system is one of the influencing factors that the spalling of the concrete surface when
subjected occurs. The paper contains main results and conclusions. It is found that, the maximum value of
axial deformation is independent of the rate of heating and it is dependent on the load that has been
applied during the test.