Title of article :
THE INFLUENCE OF PERMANENT EXPANDED POLYSTYRENE FORMWORK ON FIRE RESISTANCE OF SELF-COMPACTING AND NORMAL VIBRATED CONCRETES
Author/Authors :
Bakhtiyari, S. iran university of science and technology - School of Chemical Engineering, تهران, ايران , Allahverdi, A. iran university of science and technology - School of Chemical Engineering, تهران, ايران , Allahverdi, A. iran university of science and technology - School of Chemical Engineering - Cement Research Center, تهران, ايران , Rais-Ghasemi, M. Building and Housing Research Center - Department of Concrete Technology, ايران
Abstract :
The influence of permanent expanded polystyrene formwork on fire resistance of self- compacting concrete (SCC) is investigated in this paper. A type of SCC is produced and cured at two different conditions, one at traditional condition and the other inside expanded polystyrene forms. A type of normal vibrated concrete with similar compressive strength is also produced and cured at the same conditions for comparing purposes. The specimens are exposed to different high temperatures. The residual mechanical strengths, phase composition and porosity changes at high temperatures are investigated. The insulating permanent forms raised the risk of spalling of concretes and had important influences on residual mechanical strengths of the concrete.
Keywords :
Self , compacting concrete , insulating concrete forms , fire resistance , expanded polystyrene, spalling , limestone powder
Journal title :
Asian Journal of Civil Engineering (Building and Housing)
Journal title :
Asian Journal of Civil Engineering (Building and Housing)
