Impact of Polypropylene Fiber and Steel Fiber on Mechanical Properties of Concrete

Abstract

This experimental work portrays the mechanical properties of Hybrid Fiber Reinforced Concrete (HFRC).Concrete is exceptionally strong and versatile mould able construction material. It comprises of bond, sand, total blended with water and with or without including admixtures. As regular there are few disadvantages in concrete in concrete.

They are of brittle in nature and less ductile in nature and are weak in tensile strength. Because of its underlying cracks the durability of cement is questioned. To overcome this drawback the short discrete fibers that are consistently distributed are added to concrete which will decreases the underlying cracks and furthermore to increase the strength of concrete another type of fibers added to concrete. Adding of fibers to the concrete makes the ordinary cement to make it a composite blend and that gets benefits by each of the fiber and shows exhibits significant response.

For present work Steel Fibers and Polypropylene Fibers are utilized. Along these lines, adding of two fibers to concrete is known as Hybrid Fiber Reinforced Concrete. In the present work the two fibers which are utilized are steel fibers and polypropylene fibers. Here one fiber that is   Polypropylene Fiber will reduce the underlying cracks and another fiber that is   Steel Fiber will increase the strength and durability of cement. The fibers that are added to concrete are in equal proportions of 0.1%, 0.6%, 1%, and 1.6%. A grade of concrete M25is prepared as per the IS 10262:2009 reference code and then cube, cylinders are prepared and tested for Compressive strength, Tensile strength, Flexural strength. From the present work the strength parameters increments with the level of increment of fiber. The hybridization ratio of 1.6% gives better outcomes when compared with ordinary cement.