Concrete Sustainability Debate

Commenters discuss concrete's widespread use, environmental impact, reusability, durability issues, and alternatives like Roman concrete in construction contexts.

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Keywords

AFAIK US OP news.mit www.bbc CarbonCure CO2 compositesworld.com www.reso smithsonianmag.com concrete sand roman material strength co2 construction steel bricks brick

Sample Comments

KevinMS • Dec 27, 2023 • View on HN

you really think a little more concrete is a problem? its the most abundant construction material in the world.

sounds • Mar 25, 2021 • View on HN

It still uses concrete, from the article.

mirekrusin • Dec 16, 2022 • View on HN

They could make it from concrete.

javert • Sep 27, 2013 • View on HN

I don't get it. Doesn't concrete crack and break in a messy way? How could it be re-used?

rplst8 • Aug 17, 2017 • View on HN

Better question - why can't we reuse the concrete blocks.

recursive • Dec 25, 2023 • View on HN

"Too much concrete is being used".

hititncommitit • Aug 26, 2023 • View on HN

I wonder if this is related to Roman Concrete?https://news.mit.edu/2023/roman-concrete-durability-lime-cas...

leobg • Jul 3, 2022 • View on HN

Dig’em up and use them to reinforce concrete, perhaps?

lostmsu • May 6, 2021 • View on HN

That's only brick though. Concrete does not have that problem AFAIK.

lispm • Sep 15, 2012 • View on HN

Used as a material similar to concrete.