Engineers have found a way to cut the CO2 and energy footprint of cement by 97 percent - and the recipe's much cheaper, too.

anticapitalist:

A Drexel University team has created an alkali-activated cement based on  an industrial byproduct, slag, and simple limestone, and which doesn’t require heating to produce.

[…]

In contrast to ordinary Portland cement, Drexel’s cement is made of up to 68 percent unfired limestone, a plentiful, cheap, and low-carbon dioxide resource. To this base, a small amount of commercial alkali chemical is added along with the iron slag byproduct.

In Portland cement the substitute for this mixture, called clinker, is produced by firing a number of ingredients in a kiln, thus requiring more energy and generating more carbon dioxide.

“Our results and the literature confirm that it performs as well or better than OPC,” says Dr Michel W Barsoum.

This seems too good to be true.

We’ll see what happens.

(via violentopinions)

Source: anticapitalist

67 Notes/ Hide

  1. asmyviolingentlyweeps reblogged this from socialistscum
  2. nehaiya reblogged this from anticapitalist and added:
    Just reblogging because it’s awesome seeing the uni of the school I may go to on my dash *_*
  3. letspermaculture reblogged this from anticapitalist and added:
    Well if you are going to use cement…
  4. loungejulius reblogged this from anticapitalist
  5. climate-changing reblogged this from randomactsofchaos
  6. finitecircuit reblogged this from randomactsofchaos
  7. randomactsofchaos reblogged this from other-stuff
  8. other-stuff reblogged this from pieceinthepuzzlehumanity
  9. diearabelladie reblogged this from violentopinions
  10. nikko-andtheleft reblogged this from anticapitalist
  11. pluckyduck reblogged this from generalbriefing and added:
    Ooooooooh. Indeed: let’s see.
  12. powerofthesun reblogged this from violentopinions
  13. generalbriefing reblogged this from abokononist
  14. violentopinions reblogged this from sociopoliticaldribble
  15. child-of-the-universe reblogged this from abokononist
  16. jonnyborg reblogged this from socialistscum and added:
    it’ll probably wind up being “too expensive to be practical”
  17. pieceinthepuzzlehumanity reblogged this from socialistscum
  18. fightjunknotpunk reblogged this from anticapitalist