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.