• Abhilash G S

Every year, an enormous amount of rubber is manufactured all over the world. Due to the fact that its decomposition takes a significant amount of time and results in pollution of the environment, it is not possible to discharge it simply into the environment. Rubber that has been reused would be the most appropriate option in this scenario. Rubber wastes were incorporated into concrete as coarse aggregate in order to facilitate their reuse. The various features of the concrete, including its compressive strength, tensile strength, ductility, and other characteristics, were analyzed and compared to those of conventional concrete. As a consequence of this, it was discovered that rubberized concrete is more resistant to cracking, less ductile, and more durable than regular concrete, although it has a lower compressive strength than regular concrete. By incorporating a certain quantity of silica into rubberized concrete, it is possible to further enhance the material's compressive strength. Within the scope of the current inquiry, an effort has been made to create concrete with increased strength through the utilization of rubber. A cube with dimensions of 150 millimeters by 150 millimeters by 150 millimeters was cast in order to investigate the difference in compressive strength. Three different numbers of cubes were produced using different percentages of rubber. Three different percentages of rubber were added to the coarse aggregate: 0%, 5%, 10%, and 15% by weight. Casting the cylindrical specimen with a bottom diameter of 150 millimeters and a height of 300 millimeters was done in order to investigate the variation in the tensile strength of concrete that is spilt. The percentage of rubber in three different numbers of cylindrical specimens was cast for each of the three numbers. By weight of coarse aggregate, the rubber was added at a percentage of 0%, 5%, 10%, and 15% respectively. The compressive strength and split tensile strength of concrete are both reduced as the amount of rubber in the concrete is increased up to a certain limit. The results of the experimental investigation demonstrate how the strength of concrete can change when rubber is incorporated into the mix. During the test that was carried out, concrete of the M20 grade was used for the rebound hammer test. The compressive strength and split tensile strength of the concrete at the age of seven days and twenty-eight days were additionally determined. It has been discovered that with a replacement of 5% rubber by weight of coarse aggregate, values of M20 grade concrete are obtained that are rather close to the original values.

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"Study on Hardened Properties of Rubber Mix Concrete ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 3, page no.223-233, March-2018, Available :http://www.jetir.org/papers/JETIR1803453.pdf

"Study on Hardened Properties of Rubber Mix Concrete ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 3, page no. pp223-233, March-2018, Available at : http://www.jetir.org/papers/JETIR1803453.pdf