Paper Title:
Role of Alkaline Cations on Geomaterial Foams
  Abstract

The synthesis of geopolymers based on alkaline polysialate, was achieved at slightly elevated temperature, by alkaline activation of raw minerals and industrial waste. The materials were prepared from a solution containing dehydroxylated kaolinite and alkaline hydroxide pellets dissolved in potassium or sodium silicate. Then the mixture was transferred to a polyethylene mould sealed with a top and placed in an oven at 70°C during 24 hours. The addition of an industrial waste, silica fume, leads to the formation of an in-situ inorganic foam. Whatever the alkaline cation, foam formation occurs. The properties depend on the viscosity of silicate precursors due to the amount of water and to the size of alkaline.

  Info
Periodical
Edited by
Pietro VINCENZINI and Cristina LEONELLI
Pages
97-106
DOI
10.4028/www.scientific.net/AST.69.97
Citation
E. Prud'Homme, P. Michaud, E. Joussein, C. Peyratout, A. Smith, S. Rossignol, "Role of Alkaline Cations on Geomaterial Foams", Advances in Science and Technology, Vol. 69, pp. 97-106, 2010
Online since
October 2010
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