| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 11015714 | Materials Letters | 2019 | 5 Pages |
Abstract
The make-up of the sandstone megalithic blocks, weighing between 130 and 180â¯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.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Joseph Davidovits, Luis Huaman, Ralph Davidovits,