Ancient Geopolymers in South America and Easter Island

Prof. Joseph Davidovits is known in the scientific community as the inventor of geopolymer science. The general public recognises his works on archaeological science and his discoveries on building with artificial geopolymer stones in the pre-Columbian monuments of the Altiplano (Bolivia, Tiwanaku-Pumapunku). He is the chairman of the Institut Géopolymère /Geopolymer Institute, France, Saint-Quentin, www.geopolymer.org or www.davidovits.info. He conducts research in geochemistry, geopolymer science applied to archaeology, geopolymer cements and concretes, geopolymers for toxic waste management, and is updating his standard book Geopolymer Chemistry and Applications (2008 and 5th edition in 2020).

• Chapter 1. Why did we have to wait 40 years.- Chapter 2. Why did we choose Pumapunku/Tiwanaku and not Cuzco and Sacsayhuaman.- Chapter 3. The preliminaries of the expedition and the question about the extraterrestrials.- Chapter 4. Understanding the history of Tiwanaku / Pumapunku.- Chapter 5. First day in Tiwanaku.