Geopolymer Institute

There is often confusion between the meaning of the terms “cement” and “concrete”. A cement is a binder whereas concrete is the composite material resulting from the addition of cement to stone aggregates. Cement is sold to companies that make concrete.
Geopolymer cement is often mixed up with alkali-activated slag developed since 1956 in Eastern Europe [...]

GEOPOLYTECH: Toxic and Radioactive Waste Management

The patented GEOPOLYTECH technology is based on the use of geopolymer binders. The GEOPOLYTECH technology could provide a safe and proven method for the encapsulation and long-term containment of toxic, hazardous, and radioactive sludges from decantation ponds and pasty wastes (filter cakes) from water treatment facilities. The [...]

Georges Grimal, a French sculptor and painter, stated:

Lighting has tremendous importance in sculpture. I call “dramatized sculpture” the idea of developing the sculpture and suitable lighting together. In these, the artist has incorporated light sources into the work itself, allowing the spectator to feel the key-points and sense the finesse in the [...]

My name is Prof. Mario Collepardi and I am a professor of “Materials Science and Technology” at the Politecnico of Milan, Italy. Yesterday I have seen your interview by Mr. Giacobbo at the “Stargate” program on “La 7″ Italian TV channel. I am very interested to your theory about the building technique used by Egyptians [...]

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 to 7-60 minutes [...]

Applications with geopolymer cements and concretes are described in the section Geopolymer Cement with special emphasis on the introduction of user-friendly systems. It is striking to notice that Geopolymer cements manufacture emits 80 to 90% less CO2 (greenhouse effect gas) than Portland Cement. See in GLOBAL WARMING. They are perfect examples of Green Chemistry and [...]

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 YouTube.
There is a great need for innovation and therefore further research must be carried out. We have listed below [...]

Curtin Research Report on Fly Ash-Based Geopolymer Concrete
Develoment and properties of low-calcium fly ash-based geopolymer concrete
by Djwantoro Hardjito and B.Vijaya Rangan
Research Report GC 1 (103 pages) (dec. 2005),
Report GC 2 (107 pages) (mar. 2006)
Faculty of Engineering, Curtin University of Technology
Perth, Australia
From 2001, we have conducted some important research on the development, manufacture, behaviour, and applications [...]

Environmentally Driven Geopolymer Cement Applications.
by Joseph Davidovits
Invited Paper, Geopolymer 2002 International Conference, October 28-29, Melbourne, Australia
Environmentally driven geopolymer applications are based on the implementation of (K,Ca)-Poly(sialate-siloxo) / (K,Ca)-Poly(sialate-disiloxo) cements. In industrialized countries (Western countries) emphasis is put on toxic waste (heavy metals) and radioactive waste safe containment. On the opposite, in emerging countries, the applications [...]

Arts et Métiers Magazine
N°180, Sept. 1993:
From ancient concretes to geopolymer
“Des bétons antiques au géopolymère”
( in English, en Français )
This paper has been adapted from an article written for the general audience by two independent French journalists. It outlines the story of geopolymer and his inventor Prof. Joseph Davidovits .
Click here to see how you can [...]