International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056 Volume: 04 Issue: 11 | Nov -2017 www.irjet.net p-ISSN: 2395-0072 © 2017, IRJET | Impact Factor value: 6.171 | ISO 9001:2008 Certified Journal | Page 1215 An Experimental study on uses of Quarry Dust to replace sand in concrete Naushad Khan 1 , Ruchi Chandrakar 2 1 M.Tech Studenet, Civil Engineering Dept, Kalinga University, New Raipur, C.G., India 2 Asst Professor, Civil Engineering Dept, Kalinga University, New Raipur, C.G., India ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - - This experimental study presents the variation in the strength of concrete when replacing sand by quarry dust from 0% to 100% in steps of 10%. M20 and M25 grades of concrete were taken for study keeping a constant slump of 60mm. The compressive strength of concrete cubes at the age of 7 and 28 days were obtained at room temperature. Also the temperature effect on concrete cubes at 100 0 C on 28th day of casting was carried out to check the loss of strength. From test results it was found that the maximum compressive strength is obtained only at 50% replacement at room temperature and net strength after loss due to hike in temperature was above the recommended strength value due to 50% replacement itself. This result gives a clear picture that quarry dust can be utilized in concrete mixtures as a good substitute for natural river sand giving higher strength at 50% replacement. Key Words: Concrete, quarry dust, river sand, compressive strength. 1.INTRODUCTION Quarry dust is a byproduct of the crushing process which is a concentrated material to use as aggregates for concreting purpose, especially as fine aggregates. In quarrying activities, the rock has been crushed into various sizes; during the process the dust generated is called quarry dust and it is formed as waste. So it becomes as a useless material and also results in air pollution. Therefore, quarry dust should be used in construction works, which will reduce the cost of construction and the construction material would be saved and the natural resources can be used properly. Quarry dust has been used for different activities in the construction industry, such as building materials, road development materials, aggregates, bricks, and tiles. 1.1 literature Review The suitability of quarry dust as a sand replacement material shows that the mechanical properties are improved and also elastic modulus. The compressive strength achieved optimum by replacing fine aggregate with quarry dust in ratio of ͸Ͳ : ͶͲ as done by (maid Mir [1]. Felekoglu et al. [2] observed that the incorporation of quarry waste at the same cement content generally reduced the super plasticizer requirement and improved the ʹ8 days’ compressive strength of SCC. Normal strength SCC mixtures that contain approximately 300–͵ͳͲ Kg of cement per cubic meter can be successfully prepared by employing high amount of quarry waste. Sukumar et al. [3] found that the relations have been established for the increase in compressive strength at premature ages of curing ȋͳʹ h to ʹ8 daysȌ for different grades of SCC mixes and are compared with the IS Code formula for straight concrete as per IS: SP 23-1982. Ho et al. [4] explained that the granite fines can be used in the SCC production. However, it is important to spot out that, as a waste material, the properties of stone fines are likely to vary with time. Then, after that, the fineness of granite fines could solve durability problems, such as silica-alkali reactions. These two issues would require to be addressed if the material is to be used with assurance. Utilization of quarry dust in concrete is recommended particularly in regions where sand is not easily available (Dehwah [5]). Muhit et al. [6] determined that passing from ʹͲͲ mm sieve is used as cement replacement whereas retaining from ͳͲͲ mm sieve is used as sand replacement. Cement was replaced with stone dust in percentage of 3, 5, and 7 percent. Similarly, sand was replaced with stone dust in percentage of 15 to 50 with an increase of 5 percent. Test result gives that compressive strength of mould with 35% of sand and 3% of cement replacing dust increases to 21.33% and 22.76% in that order compared to the normal mortar mould at 7 and 28 days for tensile strength which increased to 13.47%. Ukpata and Ephraim [7] identified the flexural and tensile strength properties compared with those for normal concrete. Hence, concrete proportion of lateritic sand and quarry dust can be used for construction provided the mixture of lateritic sand content is reserved below 50%. Both flexural strength and tensile strength are increased with increase in lateritic content. According to Soutsos et al. [8], the physical characteristics of recycled destruction aggregates may unfavorably affect the properties of the blocks. However, levels of replacement of quarried stone aggregates with destruction recycled aggregates determined that it will not have significant harmful effect on the compressive strength.