International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 04 | Apr 2023
p-ISSN: 2395-0072
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EXPERIMENTAL STUDY ON COMPRESSIVE AND SPLIT TENSILE STRENGTH OF LOOFAH FIBER REINFORCED CONCRETE BY PARTIAL REPLACEMENT WITH PERLITE POWDER Praveena P. P1, Er Rajeev V. S2 1 PG Student, Dept. of Civil Engineering, Universal Engineering College, Thrissur, Kerala 2Assistant Professor, Dept. of Civil Engineering, Universal Engineering College, Thrissur, Kerala
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Abstract - Materials currently viewed as workable substitutes for natural sources include industrial and building wastes. Perlite
powder can enhance the strength qualities of concrete, according to earlier research on the subject. Perlite is an amorphous volcanic glass with a high water content that is often created when obsidian is hydrated. It is a commercial commodity and an industrial mineral that is valuable for its low density after processing. Perlite is also used sparingly as a clay addition in ceramics, cryogenic insulation, and foundries. The explosives sector uses it as well. Perlite is frequently utilised in biotechnological applications due to its thermal and mechanical stability, non-toxicity, and strong resistance against microbial assaults and organic solvents. This study looked into the strength characteristics of concrete reinforced using loofah fibres and perlite powder. The sponge gourd, commonly known as loofah fiber, is a cheap natural fibre reinforcement. The loofah fibre is treated for 24 hours with a 4% con. NaOH solution, followed by a distilled water wash. Perlite powder is a superior cementitious material that can be used in place of cement in some applications. The Loofah fibre was added to the concrete at 0, 0.5%, 1%, 1.5%, and 2%, and 10% of the cement was replaced with perlite powder. The mix ratio is M30.Along with the curing times of 7 and 28 days, the compressive strength test and split tensile strength test of cast concrete are noted.
Key Words: Loofah fiber, perlite powder, Compressive strength, Tensile strength, Natural fiber, Chemical treatment 1. INTRODUCTION Due to its excellent environmental adaptability and great compressive strength, concrete is one of the most widely used structural materials. Concrete can be used in a variety of specialist and challenging engineering scenarios, but its limitations include brittleness, low tensile strength, and poor fracture growth resistance. Therefore, it is crucial to optimise and improve concrete structures to meet various engineering requirements. Numerous investigations on fibre-reinforced concrete have shown that adding fibres can enhance the mechanical properties of concrete. Given their advantages for the economy, the environment, and the possibility to be recycled as building materials for new green structures, natural fibres are thought to be worthwhile for use in the creation of composites. The biological, chemical, economic, and environmental benefits of natural fibres can greatly enhance the final properties of fibre composites and their use in a variety of contemporary applications, including those in the building and other industries. Growing in popularity as a natural reinforcement for concrete and transformation material for environmental applications, such as wastewater treatment, is luffa cylindrical fibre. Despite having a low density, cellular material possesses exceptional mechanical and physical qualities. It is made up of a network of connected struts or plates that form the edges and faces of cells.
1.1 Loofah Fiber The sponge gourd plant, which is widely cultivated in India, Asia, and Africa, yields loofah fiber, a type of natural fibre. Recently, loofah fibre has been used to make reinforced polymers. It is a fast evolving substance with the alluring advantages of low density and affordability in comparison to metals and other fibre-reinforced materials. By replacing artificial fibre reinforcements in composites, natural fibres have a great chance of lowering CO2 emissions while also conserving nonrenewable resources. The strength and durability of concrete and loofah fibre can both be improved by treating them with 4% NaOH solution. after being cleaned with distilled water and left to dry for 24 hours at room temperature
1.2 Perlite Powder Perlite is an amorphous volcanic glass with a high water content that is often created when obsidian is hydrated. It appears spontaneously and possesses the peculiar quality of considerably expanding when heated to an appropriate temperature. It is a commercial commodity and an industrial mineral that is valuable for its low density after processing. When perlite reaches
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