Author/Authors :
ALTUN, Fatih Erciyes Üniversitesi - Mühendislik Fakültesi - İnşaat Mühendisliği Bölümü, Turkey , DİRİKGİL, Tamer Erciyes Üniversitesi - Mühendislik Fakültesi - İnşaat Mühendisliği Bölümü, Turkey
Abstract :
Fire effect is not usually taken into account as a load style on engineering structures. Especially, because of the products manufactured properties and production conditions of industrial structures, there are likely to be fire. RC or prefabricated concrete elements exposed to high temperature effect when the event of fire. In this study, the influence of the temperature on behaviour of beam elements under the bending were investigated. For this purpose, the possible positive effects provided by adding polypropylene fiber on the beam behavior under the influence of high temperature was investigated experimentally. In the experimental study, the dimensions of the prismatic beams 150x150x750mm were chosen as samples. F19 and M12-type fibers were separately added to concrete mixture of prismatic beam specimens by the volume rates 0.0%, 0.1%, 0.2%, 0.3%, 0.4% and 0.5%. Samples were cured by 7, 28 and 90-day periods and exposed to 24.5ºC, 100°C, 200°C, 400°C, 600°C, 800°C temperature effect. After these procedures, flexural strength tests were carried out. As the result of experimental studies, contrubutions of MFP fibers to toughness values haven t been as much as FP fibers at room temperature and 100°C in temperature especially. So, when increased the rate of multifibrile fibers, toughness was decreased. However, at the temperature effects higher than 200°C, toughness values of beam samples which reinforced with multifibrile fibers were found to be better from fibrile ones.
NaturalLanguageKeyword :
Polypropylene fiber , prismatic beam , flexural strength , toughness , ductilite , high temperature effect
