International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 03 Issue: 06 | June-2016 www.irjet.net p-ISSN: 2395-0072 © 2016, IRJET | Impact Factor value: 4.45 | ISO 9001:2008 Certified Journal | Page 3033 INVESTIGATION ON GEOPOLYMER CONCRETE USING GRANITE SLURRY POWDER AS PARTIAL REPLACMENT OF FINE AGGREGATE P. Pavani 1 , A.Roopa 2 , Dr. J. Guru Jawahar 3 , C. Sreenivasulu 4 1 P.G Student, Department of Civil Engineering, Shree Institute of Technical Education, Andhra Pradesh, India 2 Assistant Professor, Department of Civil Engineering, Shree Institute of Technical Education, Andhra Pradesh, India 3 Professor, Department of Civil Engineering, Annamacharya Institute of Technology and Sciences, Andhra Pradesh, India 4 Assistant Professor, Department of Civil Engineering, Annamacharya Institute of Technology and Sciences, Andhra Pradesh, India ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract - The objective of this project is to study the strength properties of class F fly ash (FA) based geo polymer concrete (GPC) using granite slurry powder (GS) as sand replacement at different levels (0%, 20% and 40%). Sodium silicate (Na2SiO3) and sodium hydroxide (NaOH) solution has been used as alkaline activator. In the present investigation it is proposed to study the engineering properties of GPC (FA50-GGBS50) viz. compressive strength, split tensile strength after 7, 28 and 90 days of ambient room temperature curing. From the results, it is concluded that the increased replacement level of granite slurry powder (GS) increased the compressive strength, splitting tensile strength values of GPC mixes. Results recommended using GS as sand replacement in fly ash and GGBS blended GPC mixes. Key Words: Geo polymer concrete, Fly ash, Ground Granulated Blast Furnace Slag, Granite Slurry, Compressive Strength, Split Tensile Strength 1.INTRODUCTION It is widely known that the production of Portland cement consumes considerable energy and at the same time contributes a large volume of CO2 to the atmosphere. The climate change due to global warming has become a major concern. The global warming is caused by the emission of greenhouse gases, such as carbon dioxide (CO2), to the atmosphere by human activities. The cement industry is held responsible for some of the CO2 emissions, because the production of one ton of Portland cement emits approximately one ton of CO2 into the atmosphere. However, Portland cement is still the main binder in concrete construction prompting a search for more environmentally friendly materials. Several efforts are in progress to supplement the use of Portland cement in concrete in order to address the global warming issues. These include the utilization of supplementary cementing materials such as fly ash, silica fume, granulated blast furnace slag, rice-husk ash and metakaolin, and the development of alternative binders to Portland cement. One possible alternative is the use of alkali-activated binder using industrial by-products containing silicate materials. In 1978, Davidovits (1999) proposed that binders could be produced by a polymeric reaction of alkaline liquids with the silicon and the aluminium in source materials of geological origin or by- product materials such as fly ash, GGBS and rice husk ash. He termed these binders as geopolymers [1]. The most common industrial by-products used as binder materials are fly ash (FA) and ground granulated blast furnace slag (GGBS). In 2001, when this research began, several publications were available describing geopolymer pastes and geopolymer coating materials. However, very little was available in the published literature regarding the use of geopolymer technology to make low-calcium (ASTM Class F) fly ash and GGBS based geopolymer concrete. The research reported in this thesis was dedicated to investigate the process of making fly ash and GGBS based geopolymer concrete and the short-term engineering properties of the hardened concrete [2-6]. 2. EXPERIMENTAL STUDY The objective of this project is to study the mechanical properties of fly ash and GGBS blended GPC mixes using Granite Slurry powder as replacement of fine aggregate for 0%, 20%, 40%. Compressive strength test was conducted on the cubical specimens for all the mixes after 7, 28, and 90 days of curing as per IS 516 [7]. Three cubical specimens of size 150 mm x 150 mm x 150 mm were cast and tested for each age and each mix. Splitting tensile strength (STS) test was conducted on the specimens for all the mixes after 28 and 90 days of curing as per IS 5816 [8]. Three cylindrical specimens of size 150 mm x 300 mm were cast and tested for each age and each mix. 3. MIX DESIGN Assume that normal-density aggregates in SSD condition are to be used and the unit-weight of concrete is 2400 kg/m 3 . Take the mass of combined aggregates as 77% of the mass of concrete, i.e. 0.77x2400=1848 kg/m 3 . The combined aggregates may be selected to match the standard grading curves used in the design of Portland cement concrete