International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395 -0056
Volume: 03 Issue: 02 | Feb-2016
p-ISSN: 2395-0072
www.irjet.net
USE OF GRANITE WASTE AS POWDER IN SCC Suma paralada1 1
Assistant professor, Civil engineering Department, NHCE, Bangalore, Karnataka, India
---------------------------------------------------------------------***--------------------------------------------------------------------Abstract - The production of SCC can be achieved by There are no practical means by which varying the mix proportion of concrete with super compaction of concrete on a site ever be fully guaranteed. plasticizer in order to make concrete flow while keeping Vibrating the concrete in congested location also causes some risk to labors. There are also doubts about strength the coarse aggregate in suspension. and durability. The lack of uniform and complete SCC has gained importance worldwide. Many compaction had been identified as the primary factor major structures were built in short interval of time. responsible for poor performance of concrete structure. Research on SCC has been carried out using Fly ash & As a result, research have been conducted in Ground granulated blast furnace slag as the main filler different parts of the world which led to the development material and very few studies have been carried out of a new type of concrete known as SELF COMPACTING using granite powder as filler material. The present CONCRETE (SCC), which could be a solution to most of study is one such attempt in which granite powder as these problems. been used as the filler material. Self-Compacting Concrete is considered to be a concrete which can be placed and compacted under its In this study, a number of mixes have been tried own self weight with little or no vibration effort and which out initially to develop a mix which could satisfy the is at the same time cohesive enough to be handled without fresh properties of Self Compacting Concrete. Once the any segregation or bleeding. suitable mixes have been developed, the water & cement is fixed at 160kg/m3& 375kg/m3 and different SCC got its initiation in JAPAN. It was first volume of paste namely, 0.36, 0.38, 0.40 & 0.42 has been developed at THE UNIVERSITY OF TOKYO by Prof kept as variable to ascertain the properties of SCC. For .H.OKAMURA and OZAWA (31) and has since generated each variation in volume of paste only the granite significant interest worldwide. Its innovative aspects lie in powder content is increased. For each volume of paste 5 its fresh properties and the potential benefits to different mixes have been developed by keeping construction practice. variation in coarse aggregate: fine aggregate ratio SCC plays a major role in precast concrete, where namely 60:40, 55:45, 50:50, 45:55, and 40:60. One best the speed of placing and removal of the elements from CA:FA ratio based on slump flow value and compressive forms at the earliest are essential requirements, at the strength is opted from each volume of paste for further same time having defect free surface. SCC is a solution that strength test . Final 4 optimal mixes are tested for 28 solves most of the challenges and problems, which come days compressive strength, flexure strength, split across the concrete industries. tensile strength and density test. The SCC has gained wide use in many countries for different application and structural configurations. SCC The results show that, SCC can be successfully requires a high slump, which can easily be achieved by developed using granite powder as the filler material. incorporating several chemical admixtures. In particular, Initial and final compressive strengths are good and Superplasticizer and Viscosity Modifying Agent (V.M.A). also flexure strength value is more than 4.5MPa for all The superplasticizer influences the rheological mixes. behavior, the viscosity and the yield value of the fresh concrete are reduced in certain concrete mix. The super plasticizer ensures high fluidity and reduces water1. General Introduction powder ratio. Superplasticizer greatly improves the pump ability and the slump value can be greatly increased. Durability is considered to be one of the important aspects for any structure. The durability of The use of Viscosity Modifying Agent increases concrete is directly related to the degree and quality of the segregation resistance of concrete and increases the consolidation efforts. Using conventional placing and deformability without segregation and then to lead high vibration techniques, the resulting concrete can have optimum self-compatibility. considerable honey combing due to development of voids. This problem occurs predominantly in reinforced Self-compacting concrete plays a major role in structures with congested reinforcement. Many parts of increasing the use of industrial byproducts like slag, fly the world are experiencing this problem. ash, silica fume and granite dust obtained during sawing
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