Structural behaviour of deep beam using hybrid fiber reinforced concrete with M−sand

Abstract

The modern construction world comes out with the strong growth of high-rise building, in many developing countries. As a primary need in Construction of high rise building, deep beams have gained popularity in present construction practices and Conventional flexural beam theory cannot be used to understand the structural behaviour of deep beam. Inclusion of fibre has improved strength and durability of the properties of concrete structures and moreover hybridization of different types of fibre can play a significant role in stopping cracks and thus achieving high concrete efficiency. Hybrid fiber reinforced concrete has many economic and technological advantages. In this project, five different mixes of concrete with 0.3 percent of glass fibre, 0.75 percent and 1 percent of steel fibre, and 0.3 percent of polypropylene fibres were included to the amount of concrete and were casted as Deep beams. For advancing towards sustainability, the mix was designed using the IS code approach for M20 grade concrete, with 100 percent substitution of natural sand by M−sand. The mechanical properties and Load versus Deflection behavior of Hybrid Fiber Reinforced Concrete (HFRC) are examined in this study. The results indicate that hybrid fibre reinforced deep beams are excelled than standard RC deep beams in terms of strength and structural behaviour when loaded.