Effects of Activating Solution and Liquid/Solid Ratio on Engineering Properties of Metakaolin-Based Geopolymer

Abstract:

In this paper, the metakaolin is used as the raw material with aluminosilicate compounds to produce the geopolymer. The effects of three levels of two major controlling factors, the degree of polymerization of the activating solution (weight ratio of SiO2 to Na2O) of 0.4, 0.7 and 1.0 and the weight ratio of liquid to solid (L/S) of 0.7, 0.85 and 1.00 on the engineering properties of geopolymer are investigated. The experimental results show that, at age of 28 days, the compressive strength increases from the lowest 37.33 MPa (SiO2/Na2O = 0.4 and L/S = 0.7) to the highest 71.21 MPa (SiO2/Na2O = 0.7 and L/S = 0.7). While, the thermal conductivity increases from the lowest 0.39 w/mk (SiO2/Na2O = 0.4 and L/S = 1.0) to the highest 0.761 w/mk (SiO2/Na2O = 1.0 and L/S = 0.7).

• Periodical: Applied Mechanics and Materials (Volumes 204-208)
• Pages: 4101-4104
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.204-208.4101
• Online since: October 2012
• Authors: Tzong Ruey Yang, Ta Peng Chang, Chun Tao Chen, Yuan Kai Lee, Bo Tsun Chen
• Keywords: Alkali-Activated, Engineering Properties, Geopolymer, Metakaolin (MK)

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