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The effect of temperature on the geopolymerization process of a metakaolin-based geopolymer
Authors:M.S. Muñ  iz-Villarreal,A. Manzano-Ramí  rezS. Sampieri-Bulbarela,J. Ramó  n Gasca-TiradoJ.L. Reyes-Araiza,J.C. Rubio-Á  valosJ.J. Pé  rez-Bueno,L.M. ApatigaA. Zaldivar-Cadena,V. Amigó  -Borrá  s
Affiliation:
  • a Centro de Investigaciones y de Estudios Avanzados del I.P.N. Unidad Querétaro, Querétaro, Querétaro, C.P. 76230, Mexico
  • b Centro de Investigación y Desarrollo Tecnológico Electroquímica, Querétaro, Mexico
  • c Centro de Física Aplicada y Tecnología Avanzada, UNAM, A.P.1-1010, Querétaro, Mexico
  • d Instituto ingeniería civil, UANL, Nuevo León, Mexico
  • e Instituto Tecnología de Materiales, UPV, Valencia, Spain
  • Abstract:This paper describes the effect of different curing temperatures on the geopolymerization process, physical, mechanical and optical properties of a metakaolin-based geopolymer activated by alkali. The influence of different curing temperatures (within the range 30 to 90 °C) was studied systematically by means of differential scanning calorimetry (DSC), SEM, UV/Vis Spectrophotometry, Leaching analysis and Brunauer-Emmet-Teller method (BET). The results showed the existence of an optimum temperature at which the geopolymer presents the best physical and mechanical properties. The geopolymers cured at 30 and 90 °C presented high porosity, and were translucent to the Visible light, which makes possible to tailor this inorganic polymers for optical and photocatalytic applications.
    Keywords:Geopolymerization   Metakaolin   Compressive strength
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