Some three or four years ago I found amongst some
back issues of Environmental Building News a copy of an article about how
disastrous Portland cement is on the environment. As well as the noise and
dust, according to many authors over 10% of anthropogenic CO2 comes from this
source.
The article really inspired me and since that time I have been
working on a carbon based cementitious material. It seemed logical to me that
the way to stop global warming and climate change was to do what nature has done
for billions of years and create our own built environment using carbon dioxide
as a source molecule.
Over two or three years we found ways of making the
technology work and are now producing bricks, blocks and pavers on an
experimental basis. What is exciting is that the bricks utilise well over 90% of
a wide range of wastes and are CO2 neutral or even a net sink. The potential
sequestration is enormous. Even though we know that there are over 1.8 billion
tonnes of Portland cement produced globally each year we do not know how many
billion tonnes of clay bricks and other materials that could potentially be
replaced are produced so we cannot give an accurate overall figure.
According to the Australian Federal department of Industry Science and Resources
in a document titled “Building for Growth. An Analysis of the Australian
Building and Construction Industries ”buildings are responsible for some 30 per
cent of the raw materials we use, 42 percent of the energy and 40 per cent of
the air emissions. So what we do know is that it would be several billion
tonnes. I think we have developed what is probably the most important
technology this milleneum
We believe that we will be successful
because so much less energy is required to make the new eco-cement resulting in
a very low cost base.
If any readers are interested or can help with
statistics etc. more detail are on our web site at www.tececo.com
John Harrison
TecEco Pty. Ltd.
497 Main
Road
Glenorchy TAS 7010
Ph 61 3 62492352 (am, weekends &
evenings)
Ph 61 3 62734747 (pm, weekdays)
Fx 62730010
