Geo Polymer Concrete

International Journal of Civil Engineering

© 2015 by SSRG - IJCE Journal

Volume 2 Issue 4

Year of Publication : 2015

Authors : Vinod Kumar Gupta, Prof. AkhilKhare

10.14445/23488352/IJCE-V2I4P102

How to Cite?

Vinod Kumar Gupta, Prof. AkhilKhare, "Geo Polymer Concrete," SSRG International Journal of Civil Engineering, vol. 2,  no. 4, pp. 7-11, 2015. Crossref, https://doi.org/10.14445/23488352/IJCE-V2I4P102

Abstract:

The cement industry is the India’s second highest payer of Central Excise and Major contributor to GDP. With infrastructure development growing and the housing sector booming, the demand for cement is also bound to increase. However, the cement industry is extremely energy intensive. Concrete is the world’s most versatile, durable and reliable construction material.Geo polymer concrete is an innovative construction material which shall be produced by the chemical action of inorganic molecules. Geo polymer results from the reaction of a source material that is rich in silica and alumina with alkaline liquid. It is essentially cement free concrete.Research is shifting from the chemistry domain to engineering applications and commercial production of geopolymer concrete. Geopolymer concrete/mortar is the new development in the field of building constructions in which cement is totally replaced by pozzolanic material like fly ash and activated by alkaline solution. This paper presented the effect of concentration of sodium hydroxide, temperature, and duration of oven heating on compressive strength of fly ash-based geopolymer mortar. Sodium silicate solution containing Na O of 16.45%, SiO of 34.35%, and H O of 49.20% and sodium hydroxide solution of 2.91, 5.60, 8.10, 11.01, 13. and 15.08. Moles concentrations were used as alkaline activators. Geopolymer mortar mixes were prepared by considering solution-to-fly ash ratio of 0.35, 0.40, and 0.45. The temperature of oven curing was maintained at 40, 60, and 120°C each for a heating period of 24 hours and tested for compressive strength at the age of 3 or 7 days as test period after specified degree of heating. Test results show that the workability and compressive strength both increase with increase in concentration of sodium hydroxide solution for all solution-to-fly ash ratios. Degree of heating also plays vital role in accelerating the strength; however there is no large change in compressive strength beyond test period of three days after specified period of oven heating.

Keywords:

Geopolymer Concrete, Fly Ash, Strength, Curing, Applications.

References:

[1] J. Davidovits, “Geopolymers and geopolymeric materials,” in Journal of Thermal Analysis, vol. 35, pp. 429–441, 1989.
[2] D. Hardjito and B. V. Rangan, “Fly Ash-Based Geopolymer Concrete Develoment and properties of low-calcium fly ash-based geopolymerconcret,” Research Report GC 1, 2005. T. W. Cheng and J. P. Chiu, “Fire-resistant geopolymer produce by granulated blast furnace slag,” Minerals Engineering, vol. 16, no. 3, pp. 205–210, 2003.  
[3] A. Palomo, M. W. Grutzeck, and M. T. Blanco, “Alkali-activated fly ashes: a cement for the future,” Cement and Concrete Research, vol. 29, no. 8, pp. 1323–1329, 1999. 
[4] J. G. S. Van Jaarsveld, J. S. J. Van Deventer, and G. C. Lukey, “The characterisation of source materials in fly ash-based geopolymers,” Materials Letters, vol. 57, no. 7, pp. 1272–1280, 2003.  
[5] Scholar K. C. Goretta, N. Chen, F. Gutierrez-Mora, J. L. Routbort, G. C. Lukey, and J. S. J. van Deventer, “Solid-particle erosion of a geopolymer containing fly ash and blast-furnace slag,” Wear, vol. 256, no. 7-8, pp. 714–719, 2004. 
[6] T. Bakharev, “Resistance of geopolymer materials to acid attack,” Cement and Concrete Research, vol. 35, no. 4, pp. 658–670, 2005. 
[7] A. Fernández-Jiménez, A. Palomo, and M. Criado, “Microstructure development of alkali-activated fly ash cement: a descriptive model,” Cement and Concrete Research, vol. 35, no. 6, pp. 1204–1209, 2005. 
[8] P. Duxson, J. L. Provis, G. C. Lukey, S. W. Mallicoat, W. M. Kriven, and J. S. J. Van Deventer, “Understanding the relationship between geopolymer composition, microstructure and mechanical properties,” Colloids and Surfaces A, vol. 269, no. 1–3, pp. 47–58, 2005. 
[9] T. Bakharev, “Thermal behaviour of geopolymers prepared using class F fly ash and elevated temperature curing,” Cement and Concrete Research, vol. 36, no. 6, pp. 1134–1147, 2006. 
[10] F. Škvára, l. Kopecký, J. N. Nìmeèek, and Z. Bittnar, “Microstructure of geopolymer Materials based on fly ash,” Ceramics-Silikáty, vol. 50, no. 4, pp. 208–215, 2006.