ceramic
Chemical Structure and Applications
The atomic ratio Si:Al in the poly(sialate) structure determines the properties and application fields. A low ratio Si:Al (1,2,3) initiates a 3D-Network that is very rigid. A high ratio Si:Al, higher than 15, provides polymeric character to the geopolymeric material. One third of Davidovits’ book, GEOPOLYMER Chemistry & Applications, is dedicated to applications. See the [...]
Technical Data Sheet
Technical Data Sheet for Geopolymeric cement type (Potassium, Calcium) – Poly(sialate-siloxo) / (K,Ca) – (Si-O-Al-O-Si-O-), Si:Al=2:1 Further details in Davidovits’ book, GEOPOLYMER Chemistry & Applications, Part III, Properties, Chapters 15 to 18, GEOCISTEM , GLOBAL WARMING, and also previous papers in the Geopolymer Library. Tested on standard sand mortar prisms: setting: 10 hours at -20°C [...]
Ceramics, Binders and Composites
Geopolymeric binders, used either with rock aggregates to produce rock-concretes or with carbon fibers to produce non-flammable composites, have a variety of important industrial uses. The same geosynthesis that produces geopolymeric rock-cements is used industrially for making binders for advanced composite materials and ceramics. Updated research is presented in Davidovits’ book, Geopolymer Chemistry & Applications, [...]
Innovation and further researches
Prof. Joseph Davidovits presents the road map for the next couple of years on geopolymer science innovation and research, at the 2nd International Congress on Ceramics, Verona, Italy, July 4th, 2008. Watch the video on Vimeo. There is a great need for innovation and therefore further research must be carried out. We have listed below [...]
#15: 30 Years of Successes and Failures in Geopolymer Applications
30 Years of Successes and Failures in Geopolymer Applications. Market Trends and Potential Breakthroughs. by Joseph Davidovits Invited Paper, Geopolymer 2002 International Conference, October 28-29, Melbourne, Australia The presentation included 30 slides describing following geopolymer applications developed since 1972 in France, Europe and USA. The Geopolymer chemistry concept was invented in 1979 with the creation [...]
#12: Geopolymers: Inorganic Polymeric New Materials
J. Thermal Analysis (1991) GEOPOLYMERS: Inorganic Polymeric New Materials by Joseph Davidovits published in : Journal of Thermal Analysis, Vol. 37, 1633-1656 (1991) Spectacular technological progress has been made in the last few years through the development of new materials such as ‘geopolymers’, and new techniques, such as ‘sol-gel’. New state-of-the-art materials designed with the [...]
#9: Ultra-High Temperature Tooling Material for the Manufacture of Advanced Composites
Ultra-High Temperature Tooling Material for the Manufacture of Advanced Composites SAMPE 1991, 36, vol. 2, pp 1939-1949: Geopolymers of the Poly(sialate-disiloxo) type (- Si-O-Al-Si-O-Si-O -), very-low viscosity inorganic resins, harden like thermosetting organic resins, but have use-temperature range up to 1000°C (1830°F). High-temperature techniques are no longer necessary to obtain materials which are ceramic-like in [...]
#3: GEOPOLYMERS Inorganic polymeric new materials
NASTS award 1994 Presentation at the national “Real Advances in Materials” Symposium, Washington DC, Sept. 26,1994 GEOPOLYMERS: Inorganic polymeric new materials by Joseph Davidovits published in Journal of Materials Education, Vol. 16 (2,3), pp. 91-138 (1994) In the aftermath of various catastrophic fires in France between 1970-73, which involved common organic plastic, research on non-flammable [...]
#F: Why Djoser’s blue Egyptian faience tiles are not blue?
IXth Egyptology Congress, Grenoble, 2004 Why Djoser’s blue Egyptian faience tiles are not blue? Manufacturing Djoser’s faience tiles at temperatures as low as 250°C? by Joseph Davidovits and Ralph Davidovits 30,000 blue faience tiles were found in Djoser’s funerary complex at Saqqarah (3. dynasty). It is generally assumed that the tiles underwent a self-glazing process [...]
Recent Literature in Geopolymer Science and Technology
Updated list of publications from the Geopolymer Research Group, Wellington, New Zealand, MacKenzie et al. (1999-2007). See the list New Zealand Geopolymer Group Use of Inorganic Polymer to Improve the Fire Response of Balsa Sandwich Structures, James Giancaspro, P. N. Balaguru, and Richard E. Lyon, J. Mat. in Civ. Engrg., Volume 18, Issue 3, pp. [...]
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