Geopolymer Institute

Up to 90% reduction of CO2 Greenhouse Gas emission during cement manufacture
Professor J. Davidovits started working on CO2 emissions mitigation as earlier as 1990, at PennState Materials Research Laboratory, USA. American Agencies (DOE and EPA) stated that this was not an important issue and both institutions declined to support research proposals.
In this section we develop:
a) [...]

Long-Term Stability of Geopolymeric Materials

The task LONGTERM in the GEOCISTEM project dealt with the better understanding of long-term durability. It is difficult to predict extended durability on the basis of operating experience, laboratory experimentation and prototype testing. Two thousand years are generally accepted as a sufficient amount of time to permit decay of [...]

A low cost, easy to produce solution

The geopolymer LTGS brick is an ideal construction technology for emerging countries, because it offers many characteristics that fulfils the population demands.
This brick uses a very cheap material available in great quantity: lateritic clay earth. This special and abundant earth, mixed with a simple geopolymer binder is compressed to [...]

Geopolymerization forms aluminosilicate frameworks which are similar to those of rock-forming minerals. Yet there are major differences. At low temperature, generally below 300°C, geopolymers contain hydroxyl groups -OH as well as bounded water (so-called zeolitic water), and the structures shown in the figure below must be edited accordingly, with the exception of the sodalite framework. [...]

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 [...]

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 [...]

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 of a non-for profit scientific [...]

Geopolymeric Cross-Linking (LTGS) and Building Materials
Geopolymer’88 Proceedings, Vol. 1, pp. 79-88
“Réticulation Géopolymérique et Matériaux de Construction”
In English:
After a concise presentation of the chemical principles governing the LTGS geopolymeric cross-linking with the main mineralogical components of soils, earths and clays, the authors present their experiments for a rational use of lateritic materials. Several tests were carried [...]

Solidification of various radioactive residues by géopolymère with special emphasis on long-term-stability
by E. HERMANN (1), C. KUNZE (1), R. GATZWEILER (2),
G.KIEßIG (2), J. DAVIDOVITS (3)
(1) B.P.S. Engineering GmbH
(2) WISMUT GmbH
(3) Cordi-Géopolymère SA
published in the Géopolymère ‘99 Proceedings, 2nd International Conference on Geopolymers
Sludges containing radionuclides, toxic heavy metals and hydro-carbons can be solidified by geopolymer with [...]

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 help of geopolymerisation reactions [...]