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Fly Ash Containing Alkali Activated Geopolymer Concrete: Effect of the Na2SiO3:NaOH Ratio and Temperature

  • Applications and Engineering
  • Construction Materials
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Interceram - International Ceramic Review

Abstract

Geopolymer concrete was prepared using stone chips of various sizes, sand and fly ash, without using any cement. Na2SiO3 and NaOH solutions with three different ratios were used as the alkaline activator for the geopolymer system, and the compositions were studied for density, strength and phase evaluation after ageing and heat treatment at different temperatures up to 90 °C. Sodium aluminium silicate hydrate phase was found to be formed in the compositions as the reaction product of geopolymerization process and is responsible for the strength and density development. The reduction in the hydrated phase content at higher temperatures results in the reduction of density and strength values.

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Authors and Affiliations

  1. Department of Ceramic Engineering, National Institute of Technology, Rourkela, India

    Ritwik Sarkar (Professor, National Institute of Technology, Rourkela, India, with more than 18 years of experience in Ceramics & Refractories. He has work experience in private sectors like IFGL Refractories Ltd., ACC Ltd., H&R Johnson (I) Ltd., and also in R & D organization like CSIR-CGCRI in India and IKKM, RWTH Aachen, Germany (DAAD Fellowship). Dr. Sarkar has received many awards in his career for his academic excellence and scientific contribution in Ceramics & Materials Science including Young Scientist Award.) & S. P. Routray

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  1. Ritwik Sarkar
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  2. S. P. Routray
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Correspondence to Ritwik Sarkar.

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Sarkar, R., Routray, S. Fly Ash Containing Alkali Activated Geopolymer Concrete: Effect of the Na2SiO3:NaOH Ratio and Temperature. Interceram. - Int. Ceram. Rev. 67, 24–29 (2018). https://doi.org/10.1007/s42411-018-0014-3

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