Document Type : Research Article
M.Sc., Amirkabir University of Technology, Department of Civil & Enviromental Engineering
Professor, Amirkabir University of Technology, Department of Civil & Enviromental Engineering
Ph.D candidate, Amirkabir University of Technology, Department of Civil & Enviromental Engineering
Fire and high temperatures are the most destructive accidental loads that a structure can be subjected to. There are numerous kinds of research concentrated on the eﬀect of high temperature on physical and mechanical properties of rocks and concrete while there are a few inadequate investigations on marble and limestones. To study the physical and mechanical properties of rocks and concretes after treatment at different temperatures several UCS and DTS conducted. This work presents direct tensile tests results obtained under high temperatures on marble, travertine and concrete samples, previously heated at a namely temperature (350°C), were tested. Destructive tests of direct tensile tests and uniaxial compressive tests were performed on the samples. Furthermore, tests were carried out under air-cooled conditions to minimize the eﬀect of the ﬁre-oﬀ method and then physio-mechanical properties of thermally treated, and the reference samples at room temperature were discovered. The results show that direct tensile strength, and tensile modulus decrease as the temperature rises for the tested range of temperatures. A decrease of the direct tensile strength up to 44%, 45%, 16.71% is perceived in air cooled for Marble, travertine, and concrete samples respectively when the samples are heated to 350°C. Regarding Young’s modulus, a fall over 42% and 22% and 33% in air-cooled is observed.