A Research Experimentation on Compressive Strength of Steel Fiber Reinforced Concrete Columns Exposed to Temperature up to 700oC by NDT Methods
M K S S Krishna Chaitanya1, K. Srinivasa Rao2

1M K S S Krishna Chaitanya, Assistant Professor, Department of Civil Engineering, Anil Neerukonda Institute of Technology and Sciences, Visakhapatnam (Andhra Pradesh), India.
2Prof. K. Srinivasa Rao, Professor, Department of Civil Engineering, Andhra University College of Engineering, Andhra University, Visakhapatnam (Andhra Pradesh), India.
Manuscript received on 03 June 2019 | Revised Manuscript received on 07 June 2019 | Manuscript published on 30 June 2019 | PP: 2136-2139 | Volume-8 Issue-8, June 2019 | Retrieval Number: H7531068819/19©BEIESP
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Abstract: The aim of this study is to evaluate the performance of reinforced cement concrete (RC) columns and steel fiber reinforced concrete (SFRC) columns subjected to temperatures 100, 200, 300, 400, 500, 600 and 700oC by Non-Destructive Test (NDT) methods. In order to achieve this, both RC and SFRC columns are cast and cured for 28 days. Later these columns are heated in an electrical furnace up to a temperature of 7000C for different durations of 1 hour and 2 hours. In this study, Rebound hammer and Ultrasonic Pulse Velocity (UPV) tests have been conducted to study the effect of high temperature on the behaviour of columns. Based on the results of this study, it is concluded compressive strength obtained through Rebound hammer test of SFRC columns are more than those of RC columns up to 5000C. Results of UPV tests show a decrease in pulse velocity value for columns heated beyond 4000C.
Keywords: Reinforced Concrete, Steel fibers, High Temperature, Compressive Strength, and Non-Destructive Testing.

Scope of the Article: Concrete Engineering