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New Cement is Carbon Negative

novacem

Cement is one of the most significant single sources for carbon emissions, due to the intense energy required for its production and http://www.rickgenest.com/cheap-generic-cialis-india the volumes of it that are produced annually, as well as from material itself, but an alternative is now available. It doesn't just reduce the amount of carbon dioxide emitted, it actually binds more CO2 than is emitted from its production, which makes its production carbon negative.

Novacem has developed a new cement that uses magnesium silicate instead of calcium compounds. The new material is supposed to have performance and cost comparable to ordinary Portland cement. Furthermore, because the production of magnesium silicate is a lower energy process, it can be manufactured using biofuel, instead of requiring more intensive and polluting energy sources.

The company also notes that "production of our cement is visit web site cheap generic viagra india carbon negative; more carbon dioxide (CO2) is absorbed during the process than is emitted." Manufacturing a tonne of theglobalobservatory.org this cement results in the absorbtion of up to 100 kg (220 lbs) of carbon dioxide more than is emitted in the process.

Magnesium oxide is widely available as well, so there should not be an issue of material scarcity with the use of this as a Portland cement replacement. The company is not producing the material itself, but is instead seeking to license its technology to producers.

via: Jetson Green

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0
New Cement is Carbon Negative
written by mark jeremy, February 18, 2011
The new cement which is http://www.accessibleadventuresvt.org/cheapest-levitra-prices carbon negative is a great invention but I can see an issue in uptake and actually using the only for you best levitra price product. The construction industry is notoriously tradtional and may be nervous about trialling new cement materials.
Oh Great! Cement dust will be carcinogenic, Low-rated comment [Show]
0
Oh noes! teh cancer!
written by Jimbo, February 20, 2011
@Mike - I might be worried about magnesium silicate if I was forced to inhale talc for 6 hours a day, five days a week over at least 113 weeks. Which is what they had to do wffisher.com to induce tumors in rats.

This is a cool innovation in construction materials, and I hope they find many, many uses for it. If it's cheap and easy to use, then it might change the market and we'd be able to fix a problem that we have with one aspect of carbon production. That's good news. Try to look on the bright side, eh?
0
News Flash! - ALL silicates cause cancer
written by John, March 13, 2011
Mike, silicates in general are carcinogenic. Your explanation is correct. I would add that there is a range. Larger than 5 microns and www.boehler.org smaller than I think 2 or 3 microns in particle size is either filtered out or can be transported out. Google that to cheap viagra brand verify.

Cement dust, sanding dust, pottery dust, glass dust, fiber glass insulation dust, rock dust, the list goes on and on. I thought silicates were the most plentiful minerals on buy ultram online uk the planet.

Fortunately they are easily controlled with the other really plentiful compound, water.

Buy some N95 dust masks, use them, and chill. This is a wonderful development.
0
...
written by UK sciientist, March 19, 2011
Hardwood dust is carcinogenic and the generic viagra soft tabs risk is only kept down by extracting dust from joinery factories so that no-one breathes much of it in. Many "natural" substances can cause harm. We can only manage the risks, not eliminate them.

CO2-absorbing concrete sounds an excellent idea especially if it really sequesters 100 kg per tonne of building weight; that's minus 6 tonnes of CO2 on a small building. Besides, with concrete being a wet material, the exposure to dust on building sites should be limited.
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low energy cement
written by John Daglish, January 29, 2013
EMC low energy cement

An alternative fabrication technique EMC (Energetically modified cement) uses very finely ground cements that are made from mixtures of cialis on line cement with sand or with slag or other pozzolan type minerals which are extremely finely ground together. Such cements can have the same physical characteristics as normal cement but with 50% less cement particularly due to their increased surface area for the chemical reaction. Even with intensive grinding they can use up to 50% less energy to fabricate than ordinary Portland cements

http://www.emccement.com/landing4a.htm
http://www.sintef.info/upload/Performance_of_energetically_modified_cement.pdf

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