FLEXURAL BEHAVIOUR OF LOW CALCIUM FLASH BASED GEOPOLYMER CONCRETE BEAMS

Year 2013, Volume: 5 Issue: 1, 24 - 31, 01.03.2013

S. Kumaravel S. Thirugnanasambandam C. Antony Jeyasehar

Abstract

The ecosystem is polluted by the emission of green house gas CO2 due to the production of ordinary Portland cement (OPC). An alternate material is substituted with low calcium i.e. Fly ash. Fly ash which is a by-product of coal industry is introduced to replace OPC in the concrete. Fly ash is rich in silicate gel with alkaline solution, to produce a good concrete. Increase in fly ash fitness increases the compressive strength and reduces the porosity. This study is presented on the flexural behaviour of geopolymer concrete (GPC) beams and control cement concrete beams. The beams are cast over an effective span of 3000mm and tested up to failure under static loads. The load displacement response of the geopolymer concrete beams and control beams are obtained to compare with the theoretical results. The result implies that there is an increase in flexural strength, service load, and peak load of geopolymer concrete beams

Keywords

flexural behaviour, reinforced concrete, geopolymer concrete, beams, cubes

References

• [1] Malhotra.V.M., Making concrete ‘greener’ with fly ash, ACI Concrete International 21, 61-66, 1999.
• [2] Davidovits.J., Soft mineralogy and geopolymers, Geopolymer 88 International conference, the University and Technologies, Compiegne, France,1998.
• [3] Davidovits. J., High –Alkali Cements for 21st Century Concretes in Concrete Technology, Past, Present and Future, V. Mohan Malotra Symposium, ACIP-144, 383-397, 1994.
• [4] Duxson. P., Provis.J.L, Lukey.G.C. and van Deventer.J.S.J., The role of inorganic polymer technology in the development of green concrete, Cement and Concrete Research, 37(12), 1590-1597, 2007
• [5] Hardjito.D. and Rangan. B.V., Development and properties of low calcium fly ash based geopolymer concrete, Research Report GC1,Curtin University of Technology, Perth, Australia, 2005.
• [6] Wallah. S.E. and Rangan. B.V., Low calcium fly ash based geopolymer concrete: long term properties, Research Report GC2, Curtin University of Technology, Perth, Australia, 2006.
• [7] Sumajouw.M.D.J. and Rangan.B.V., Low Calcium fly ash based geopolymer concrete: Reinforced Beams and Columns, Research Report GC3, Curtin University of Technology, Perth, Australia, 2006.
• [8] Rangan.B.V., Fly ash based geopolymer concrete, Research report GC4, Curtin University of Technology, Perth, Australia, 2006.
• [9] Sujatha.T., Kannapiran.K. and Nagan.S., Strength assessment of heat cured geopolymer concrete slender column, Asian Journal of civil Engineeing (Building and Housing),13 (5), 635-646, 2012