Mechanical Properties Of Hybrid Fiber Concrete
1Sivakamasundari.S , M.Tech student in SRM Institute of science and technology kattankulathur, Kanchipuram 603 203.
2Balamurugan.S, Assistant professor (O.G) in SRMIST kattankulathur, Kanchipuram.
Manuscript received on 02 June 2019 | Revised Manuscript received on 10 June 2019 | Manuscript published on 30 June 2019 | PP: 146-150 | Volume-8 Issue-8, June 2019 | Retrieval Number: G6139058719/19©BEIESP
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Abstract: Concrete is a substance, which has high strength in compression and less strength in tension, so far increasing the tensile strength of the concrete, reinforcements are added. In spite of this, cracks are formed on the surface due to many conditions like heavy loading, dry shrinkage etc. To increase the tensile strength and to prevent the growth of micro cracks of concrete to the macroscopic level, fibers can be added. In this paper, metallic and non-metallic fibers (i.e.), [hooked end steel fibers (HESF) and polypropylene fibers (PPF)] are combined and used as hybrid fibers. Their effects and mechanical properties are experimentally investigated. The mechanical property tests like compressive strength test split tensile test and flexural strength tests were carried out. HESF of length 30mm and diameter 0.5mm and PPF of length 6mm and diameter 0.01mm were used with water /cement ratio of 0.45. The concept of this experiment is to find the toughness properties of hybrid fibers (HESF &PPF) reinforced concrete of M30 grade with 0.7%, 0.75%, 0.8% of HESF & 0.3%, 0.25%, 0.3% of PP fiber by volume of cement. Each of 27 cubes, cylinder and beams were cast and tested after 7th, 14th and 28th days of curing. Results were found that 26% increase in the compressive strength and 87% increase in the flexural strength of concrete in 0.8% of HESF and 0.2% of PPF as compared other two and the conventional concrete.
Keyword: Hybrid Fiber, Hooked End Steel Fiber (HESF) and Polypropylene Fiber (PPF), Hybrid Fiber Reinforced Concrete (HFRC)
Scope of the Article: Mechanical Maintenance