Optimization of Fly Ash-Based Geopolymer Using a Dynamic Approach of the Taguchi Method

  • Takeomi Iwamoto
  • Kozo Onoue
  • Yasutaka Sagawa
  • Ryosuke Tsutsumi
Conference paper


A geopolymer is an inorganic polymer devised by Davidovits. In the field of construction materials, hardened bodies resulting from polymer reactions among metallic ions, such as Si4+ and Al3+, and alkaline solutions, such as sodium hydroxide solution and sodium silicate solution, have been studied. Geopolymers have several superior characteristics, such as high strength and high resistance to sulfuric acid. Thus, geopolymers can be applied to precast concrete products, such as sewage pipes. There are several kinds of design parameters to be considered when manufacturing geopolymers, which makes it difficult to establish a reasonable design for this material. The present study presents an optimization of fly ash-based geopolymers using a dynamic approach of the Taguchi method. As an input value, the volume ratio of the active filler and the alkaline solution is adopted. Coal fly ash and ground-granulated blast-furnace slag are used as active fillers. Six design parameters are taken into account. Type of fly ash and the institutes where the experiments were conducted are considered as noise conditions. As a result, the applicability of this method to the optimization of fly ash-based geopolymer is confirmed. The optimized geopolymer mortar was also found to have a stable long-term compressive strength and a superior resistance to sulfuric acid.



This work was supported by JSPS KAKENHI Grant Number JP16K06442.


  1. 1.
    Davidovits J. (1982). US Patent No. 4349386. Mineral polymers and methods of making them.Google Scholar
  2. 2.
    Ichimiya, K., et al. (2011). Fundamental study on mixture proportion and manufacture method of geopolymer mortar. Proceedings of the Japan Concrete Institute, 33(1), 575–580. (in Japanese).Google Scholar
  3. 3.
    Tatebayashi, K. (2014). Nyumon Taguchi method (pp. 39–75). Tokyo: Union of Japanese Scientists and Engineers Publishing Company. (in Japanese).Google Scholar
  4. 4.
    Olivia, M., & Nikraz, H. (2012). Properties of fly ash geopolymer concrete designed by Taguchi method. Materials & Design, 36, 191–198.CrossRefGoogle Scholar
  5. 5.
    Onoue, K., & Bier, T. A. (2017). Optimization of alkali-activated mortar utilizing ground granulated blast-furnace slag and natural pozzolan from Germany with the dynamic approach of the Taguchi method. Construction & Building Materials, 144, 357–372.CrossRefGoogle Scholar
  6. 6.
    JIS A 6201. (2015). Fly ash for use in concrete. Tokyo: Japanese Industrial Standards Committee. (in Japanese).Google Scholar
  7. 7.
    JIS K 1408. (2016). Sodium silicate. Tokyo: Japanese Industrial Standards Committee. (in Japanese).Google Scholar
  8. 8.
    JIS R 5201. (2015). Physical testing methods for cement. Tokyo: Japanese Industrial Standards Committee. (in Japanese).Google Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  • Takeomi Iwamoto
    • 1
  • Kozo Onoue
    • 2
  • Yasutaka Sagawa
    • 3
  • Ryosuke Tsutsumi
    • 1
  1. 1.Graduate School of Science and Technology, Kumamoto UniversityKumamotoJapan
  2. 2.Faculty of Advanced Science and Technology, Kumamoto UniversityKumamotoJapan
  3. 3.Department of Civil EngineeringKyushu UniversityFukuokaJapan

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