Are we mixing our modern concrete wrong?
- Thread starter Harry Bloomfield
- Start date
Probably.
The Romans could teach us a thing or two.
The Pantheon, still standing after 2,000 years.
The Romans could teach us a thing or two.
The Pantheon, still standing after 2,000 years.
What did the Romans ever do for us?
Fascinating, I wonder if the added it through knowledge, or sheer lucky accident?
A mix of experience and luck, i'd imagine. Posted a link to a story on Roman concrete a while ago and part of their recipe was volcanic pumice, if i recall rightly. The Chinese have been the biggest consumers of concrete this past 20 odd years and has become one of the worst symptoms of Global Warming this side of car fumes. Terrible stuff. But how else are we to build large scale construction without it?
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Deleted member 221031
Geopolymer has been around longer
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Deleted member 294929
Not really if they are dead
But the cement industry is responsible for about 8% of planet-warming carbon dioxide emissions — far more than global carbon emissions from aviation. If the cement industry were a country, it would be the third-largest emitter of carbon dioxide in the world, after the U.S. and China.
One startup seeks to change that. At the California-based company Brimstone, CEO Cody Finke and his team in Oakland have discovered a potentially game-changing solution: the world's first carbon-negative cement, made from calcium silicate rocks. According to Finke, calcium silicate rocks are about 200 times more abundant than limestone, which is traditionally used to make cement.
CBSnews.com
Global emissions from the manufacture of cement stood at 1.6 billion metric tons of carbon dioxide (MtCO₂) in 2022. Emissions from cement production have increased massively since the 1960s, and have more than doubled since the turn of the century. More than four billion metric tons of cement are currently produced worldwide each year.
Statista.com
Number nerds and the scientifically inclined can find more data at essd.copernicus.org
One startup seeks to change that. At the California-based company Brimstone, CEO Cody Finke and his team in Oakland have discovered a potentially game-changing solution: the world's first carbon-negative cement, made from calcium silicate rocks. According to Finke, calcium silicate rocks are about 200 times more abundant than limestone, which is traditionally used to make cement.
CBSnews.com
Global emissions from the manufacture of cement stood at 1.6 billion metric tons of carbon dioxide (MtCO₂) in 2022. Emissions from cement production have increased massively since the 1960s, and have more than doubled since the turn of the century. More than four billion metric tons of cement are currently produced worldwide each year.
Statista.com
Number nerds and the scientifically inclined can find more data at essd.copernicus.org