Investigation on Impact Strength of Fiber Reinforced Concrete Subjected To Elevated Temperature
Alwyn Varghese1, Anand. N2, Prince Arulraj G3

1Alwyn Varghese, Department of Civil Engineering, KITS, Coimbatore (Tamil Nadu), India.
2Anand N, Department of Civil Engineering, KITS, Coimbatore (Tamil Nadu), India.
3Prince Arulraj G, Department of Civil Engineering, KITS, Coimbatore (Tamil Nadu), India.
Manuscript received on 05 February 2019 | Revised Manuscript received on 13 February 2019 | Manuscript published on 28 February 2019 | PP: 397-402 | Volume-8 Issue-4, February 2019 | Retrieval Number: D2699028419/19©BEIESP
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Abstract: The effect of elevated temperature on impact strength of Fiber Reinforced Concretes (FRC) is investigated in this paper. Cylinder specimens are used with different types of fibers such as Aramid, Basalt, Carbon, Glass, Polypropylene and PVA. All the specimens were exposed to elevated temperature as per standard fire curve following ISO 834. After heating the specimens are cooled by natural air prior to impact strength test. The tests are conducted as per ACI committee 544. Test result reveals that addition of fiber enhances the impact strength of concrete specimens. Concrete with Carbon fiber and Basalt fiber exhibits better performance than concrete with other fibers. In unheated condition Carbon fiber shows 5.9 times increase in impact resistance with respect to reference specimen. For 90 minutes of heat exposure, all FRCs except concrete with Aramid fiber shows 2 times better impact resistance than that of reference specimen.
Keyword: Fiber Reinforced Concrete, Impact Strength, Elevated Temperature, Carbon Fiber, Basalt Fiber.
Scope of the Article: Concrete Engineering