International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 04 Issue: 05 | May-2017
p-ISSN: 2395-0072
www.irjet.net
Experimental investigation on flexural behaviour of RC beam with rubber tube filled with rubberized concrete G.Sharath raj Department of Civil Engineering, Easwari Engineering College, Chennai-600089, India --------------------------------------------------------------------------***----------------------------------------------------------------------Abstract - Modifications of various construction materials outlined from these works include low density, good
thermal resistivity, better sound absorption, increase slump values and toughness, and better impact resistivity of the resulting concrete. For the purpose of this work, sixty-four trial mixes were prepared to produce hollow concrete blocks of dimension 390 mm Ă— 190 mm Ă— 190 mm using 0%, 10%, 25% and 50% crumb rubber (CR) as replacement of fine aggregate. Tests conducted on the hardened concrete include compressive strength, thermal conductivity, electrical resistivity, acoustic absorption and transmission loss, and electrical resistivity. It has been found that CRHCB can be produced as load-bearing hollow blocks as well as lightweight hollow blocks. The CRHCB also has better thermal, acoustic and electrical properties in comparison with conventional hollow block. Piti Sukontasukkul et al [2] proposed the paper on crumb rubber concrete. In their study they decided to replace the course and fine aggregate in concrete for moulding pedestrian blocks. They believe that the concrete acting as a binder mixed with crumb rubber can make the concrete blocks more flexible and it provide softness to the surface. In this study they saw that the pedestrian blocks with crumb rubber performed quite well in skid and abrasion resistance. In this study the process of making the concrete is economical due to the simplicity of the manufacturing process. Camille A. Issa et al [3] studied the basic building materials in concrete construction are primarily aggregate and cement. The educated use of recycled materials can result in reduced cost potentials and may enhance performance; however, not all recycled materials are well suited for concrete construction applications. In this study, the performance of recycled materials crumb rubber as valuable substitute for fine aggregates ranging from 0% to 100% in replacement of crushed sand in concrete mixes is investigated. An acceptable compressive strength was obtained with up to 25% by volume replacement of fine aggregates with crumb rubber. Guneyisi et al [4] concluded experimental study on the mechanical properties of rubberized concretes with and without silica fume. It was observed that a large reduction in the strength and modulus values with the increase in rubber content. In this study, the flexural strength of the concrete is calculated. This is achieved by replacing 25%,
have an important significance on the building sector. Several attempts have therefore been made in the building material industry to put to use waste material products, example, worn-out tires and waste bicycle tire tubes into serviceable and cost effective items. Favorable outcome in this regard will contribute the reduction of waste material dumping problems by utilizing the waste materials as raw materials in construction industry. The current study involves the mechanical properties of rubberized concrete for a durable, ductile, light weight and shock resistant concrete. In this investigation a volume of coarse aggregate is replaced by crumb rubber and is filled inside a tire rubber tube. The mid-point of the rubber tube meets the neutral axis of the beam which is filled with normal concrete mix of M30 grade. The rubber particles composed of crumb rubber was used to replace 25%, 50%, 75%, 100% of a volume of coarse aggregate inside the tube. Tests are conducted to evaluate the flexural behavior of this RC beam. Keywords - Crumb rubber; Replacement; Cost efficient.
Rubber
tube;
Partial
I. INTRODUCTION Cement and aggregate are the most important constituents used in concrete production and are the vital materials needed for the construction industry. This obviously led to an increasing demand of natural materials used for the concrete production. Favorable outcome in this regard will contribute the reduction of waste material dumping problems by utilizing the waste materials as raw materials in construction industry. Waste rubber from lorry tire and rubber tire tubes of bicycle has received a great deal of attention for utilization because of its large production volume and difficulty of disposal. This rubber is crumbed in the size of coarse aggregate and the coarse aggregate is partially replaced by crumb rubber. This rubberized concrete is filled inside the rubber tube of various proportions and the rubber tube is placed inside the reinforcement so that the neutral axis of the concrete touches the mid-point of the rubber tube. Bashar S. Mohammed et al [1] conducted to determine the fresh and hardened properties of crumb rubber concrete (CRC), concrete containing crumb rubber as partial replacement to fine aggregate. The benefits of
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