Effect of High Temperatures on Properties of NSC and HSC
Nagendra Prasad C1, M. Potharaju2, V. Ravindra3

1Nagendra Prasad C*, M.Tech,(Ph.D), Research Scholar, JNTUK, Kakinada, Andhra Pradesh, India
2M. Potharaju, Professor, Department of Civil Engineering, Gandhi Institute of Technology and Management (GITAM), Deemed to be University, Visakhapatnam, Andhra Pradesh, India.
3V. Ravindra, Professor, Civil Engineering JNTU College of Engineering Kakinada.

Manuscript received on March 29, 2020. | Revised Manuscript received on April 25, 2020. | Manuscript published on April 30, 2020. | PP: 967-970 | Volume-9 Issue-4, April 2020. | Retrieval Number: D7660049420/2020©BEIESP | DOI: 10.35940/ijeat.D7660.049420
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: Disasters due to fire accidents have become frequent resulting in concrete subjected to high temperatures leading to severe loss of life and property. The usage of High Strength Concrete (HSC) as a structural material has led to the demand to understand the effects of fire on concrete. This paper is aimed at understanding the properties of both HSC and normal strength concrete (NSC) at high temperatures. The experimental work mainly focuses on physical & mechanical properties of M20 grade NSC and M60 Grade HSC subjected to high temperatures. Color change, weight loss, crack width, thermal expansion and residual compressive strength were observed under high temperatures ranging from 1000C to 8000C with an increment of 1000C at exposure duration of three hours. The effect of high temperatures on HSC is more prominent than that of NSC. The performance of HSC is marginally poor compared to NSC at temperatures upto 8000C.
Keywords: Normal Strength Concrete, High Strength Concrete, Fire, High Temperatures, Color Change, Crack Width, Residual Compressive Strength.