Experimental Study on Glass Fiber Reinforced Concrete
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2016, Vol 4, Issue 6
Abstract
Concrete is most widely used construction material in the world. But, it has low tensile strength, low ductility and low energy absorption. The cause of poor tensile behavior of concrete is its low toughness and defects present in. So to improve its strength, toughness and ductility different fibers are used in concrete. Fibre reinforced concrete is a combination of cement based matrix with an ordered or random distribution of fibers. The fibers present in the concrete increases the properties of concrete such as flexural strength, impact strength and shrinkage strength.The main reasons for adding fibres to concrete matrix is to provide crack resistance and crack control. Also, it helps to maintain structural integrity and cohesiveness in the material. It has been found that different type of fibers added in specific percentage to concrete improves the mechanical properties, durability and serviceability of the structure. In this paper effect of fibers on the strength of concrete for M 20 grade have been studied by varying the percentage of fibers in concrete. Fiber content were varied by 1%, 1.5% and 2% by weight of concretet. Cubes of size 150mmX150mmX150mm to check the compressive strength, cylinder of size 150mm dia. & 300mm length to check split tensile strength and beams of size 100mmX100mmX500mm for checking flexural strength were casted. All the specimens were cured for the period of 28 days before crushing. The results of fiber reinforced concrete for 28days curing with varied percentage of fiber were studied and it has been found that there is significant strength improvement in glass fiber reinforced concrete. The optimum fiber content for compressive strength and split tensile strength is 1% and for flexural strength is 2%. Also, it has been observed that with the increase in fiber content up to the optimum value increases the strength of concrete. Slump cone test was adopted for measuring the workability of concrete. As fiber content increases in concrete workability reduces.
Authors and Affiliations
Mr. Amar D. Patil, Dr. D. N. Shinde
Keywords
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