T.D. One North American geopolymer application is a blended Portlandgeopolymer cement known as Pyrament® (patented in 1984) for rapid
pavement repair. Shall we consider geopolymer as a supplementary or
rather a complementary material to cements and concretes, or does it
really have the potential to replace the conventional Portland cements on
a large scale?
Dr. Davidovits
I once visited a cement
plant in South Africa
and was struck by the
local conditions ruling the manufacture of
Portland cement there.
The plant was located
very close to the market
(the cities of Pretoria
and Johannesburg) but
the geological resources, namely limestone,
had to be extracted ca.
100 km up north and
transported by train to
the plant. On the other
hand, the local geology
was perfectly adapted
for the manufacture of
geopolymer
cement.
Other regions in the
world are experiencing
the same situation. In
other words, geopolymer cement is a complementary material to
Portland cement.
T.D. As a research scientist, I have worked on calcium phosphate cement
(another s