Why Alkali-Activated Materials are NOT Geopolymers ?
Many scientists and civil engineers are mistaking alkali activation for geopolymers, fueling confusion, using them as...
Category: FAQ
Answers to some of the most asked questions
FAQ for artificial stone supporters
Pyramids (1) Are Pyramids Made Out of Concrete? Pyramids (2) The evidences Pyramids (3) The formula, the invention...
Who is selling geopolymers ?
There are hundreds of companies manufacturing and selling geopolymer products worldwide. And a lot more are not...
Who is doing research on geopolymers?
There are now hundreds of labs and institutions throughout the world doing fundamental and applied research on...
After the Pyramids ?
If you want to know how the knowledge evolved after the Pyramids click on Colosses of...
Is the word geopolymer free ?
Yes, Prof. Joseph Davidovits put the word GEOPOLYMER (its english spelling) in the Public Domain in 1979. It means that...
XRD and NMR of Geopolymers
In his message posted in the topic how to separate neat geopolymer , Dr. Zhang Yunsheng (zhangys) from Southeast...
New scientific word for METAKAOLIN
In his message posted in the topic how to separate neat geopolymer, Dr. Zhang Yunsheng (zhangys) from Southeast...
Water reducing agent
Geopolymer combines the merits of cement and ceramics, we can make materials with the properties of ceramics by a...
Making stone simpler guide?
I'm a sixth form student studying chemistry. I am interested in doing a project at college similar to the one you have...
Al(IV)-(V)-(VI) coordination in calcined kaolinite
You answered my question about kaolinite calcination. You said me to see your patent 5,288,321. I read it and I...
X-ray crystaline and X-ray amorphous geopolymers
My paper: Geopolymer: Inorganic polymeric new materials, J. of Thermal Analysis, vol.37 (1991) 1633-1656 (see in the...
Pyramid: Cement and Concrete expert agrees!
My name is Prof. Mario Collepardi and I am a professor of "Materials Science and Technology" at the Politecnico of...
H2O, SiO2 and Al2O3 ratios
There is a clear relationship between water ratio and mechanical properties. The water is our carrier. Polycondensation...
Heavy metals immobilisation
Heavy metals immobilization follows two steps: First: dissolution, solubilization of the heavy metal, due to high pH...
Replicating egyptian stonework
I recently read your book regarding the construction of the pyramids and was impressed with the overall coherence of...
Difference between geopolymer and amorphous zeolite
What is the mechanistic implications of the higher concentration of precursors in the case of geopolymer formation? In...
Fundamentals on geopolymerization
I have been following your work now for a couple of years and are mainly concerned with the toxic waste field and the...
Pyramids: opponents missing the big picture?
A letter from David Martin about Davidovits’ pyramid theory that illustrates how narrow minded people behaved when...
