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Article Dans Une Revue Materials Letters Année : 2019

Ancient geopolymer in south-American monument. SEM and petrographic evidence

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Joseph Davidovits
  • Fonction : Auteur
Luis Huaman
  • Fonction : Auteur

Résumé

The make-up of the sandstone megalithic blocks, weighing between 130 and 180 tonnes each, from Pumapunku -Tiwanaku, Bolivia, was compared with three geological sandstone sites from the area. The SEM/EDS, XRD and thin section results suggest that the sandstone megalithic blocks consist of sandstone grains from the Kallamarka geological site, cemented with an amorphous ferro-sialate geopolymer matrix formed by human intervention, by the addition of extra alkaline salt (natron) from the Laguna Cachi in the Altiplano, Bolivia. (C) 2018 Elsevier B.V. All rights reserved.
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Dates et versions

hal-03633102 , version 1 (06-04-2022)

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Joseph Davidovits, Luis Huaman, Ralph Davidovits. Ancient geopolymer in south-American monument. SEM and petrographic evidence. Materials Letters, 2019, 235, pp.120-124. ⟨10.1016/j.matlet.2018.10.033⟩. ⟨hal-03633102⟩

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