Skip to comments.What is the Future of Concrete in Architecture?
Posted on 10/25/2019 11:28:30 PM PDT by 2ndDivisionVet
Concrete is the second-most used material on earth. It is also the second-largest emitter of CO2, with cement manufacturing accounting for 5 to 7 percent of annual emissions. The continued popularity of concrete as a material of choice in the design and construction industry, coupled with increasing unease of the environmental consequences, has put concrete firmly in the spotlight of innovation and experimentation. As a result, designers, architects, and researchers around the world are generating multiple visions for what the future of concrete in architecture could look like.
Concrete has been a material of choice for architects and builders for thousands of years, with the earliest known use dating from Syria and Jordan in 6000BC. Its low cost, versatility, fast application, and sheer familiarity to those involved in using it means that roughly 22 billion tons of concrete are poured every year. According to a recent BBC study, production of cement has increased thirtyfold since 1950, and a further fourfold since 1990, driven in part by postwar building in Europe, and building booms across Asia from the 1990s onwards. It is predicted that to keep pace with demands in South East Asia and sub-Saharan Africa, cement production may have to increase by 25% by 2030.
(Excerpt) Read more at archdaily.com ...
” It is also the second-largest emitter of CO2”
All that is is old is new again.
Without carbon and oxygen there is no life. Murdering tards want to kill every living thing!
Oh dear, maybe concrete should see a doctor.
My father and I built my house in 1989. The by far longest lasting material I used and what gave me the most bang for my buck was the concrete. The trees and bushes I planted on that bare 6 acres have ate at least the CO2 from that material and Id bet more. If you meant the author is retarded, Id agree or smoking dope.
All but about 500 million. Their plan for a humanist dystopian utopia where everyone is controlled by the state.
Therefore the left wants it outlawed.
A lot of fossil fuels are burned in the gathering and transportation of the components for making concrete.
“with cement manufacturing accounting for 5 to 7 percent of annual emissions”
This is a one time out gasing. Cement lasts may years without additional out gasing.
Of course the CO2 hysteria is all BS but the first thing that needs to be done to slow the growth of concrete use in this country is to start making road and bridge concrete in the US more durable.
Here in the rust belt winter road salt use destroys concrete and asphalt roads and bridges.
Typical, low cost concrete is porous to water. Water laden with road salt enters the concrete and eventually the salt recrystallizes and cracks the concrete.
Concrete mixtures can be made that are not porous. But they are more expensive. However, the reduction in road maintenance would more that make up the difference in lifetime cost of the road or bridge.
Just stopping the use of lime stone aggregate in road and bridge concrete would make a huge difference.
Oh, great, now the eco-weenies will be advocating for mud huts and thatched rooftops. I advocate we throw them all in a giant sarcophagus and fill it with Portland cement.
Back When, I watched a multi-ton paving machine actually get lifted off the ground because the mix it was trying to compress, distribute and smooth out was so stiff.
There are too many locally connected highway construction companies that depend on constant road repair and replacement contracts, let by someone's brother-in law with the county highway commission, for the US to build durable interstates, let alone secondary roads.
The Left/Climate types want to limit highway use to Party Members, anyhow, so CO2 outgassing is just another excuse.
Here in Jakarta, 30-40 000 tonnes of sand and aggregate are trucked into the city every day. Good quality sand with sufficient angularity is becoming more scarce, and has to be hauled longer distances. The price of good sand has tripled in the last 5 years.
I do not know the consumption figures for Singapore, but they are now transporting some of their sand all the way from Thailand!
So in other words, concrete feeds plants.
What retarded people we have running around these days scaring folks to death with just bad science, junk science and pseudo science.
CO2 is tree food
Concrete produces tree food
Let the Concrete flow
Road salt destroys vehicles fast, too. I noticed that on much of the Colorado Rockies, no salt was used on roads. Sand and sometimes another chemical (don’t know what) were used on tight curves and switchbacks on passes. Ice tires made with new tech and directional tread work really well on any ice that vehicles can drive on at all—that is, as long as the ice isn’t too warm and wet for anything.
I suspect that the main problems with concrete is that we haven’t figured out how to make it the way the Romans did that lasts so well, and that we don’t plant enough greenery. The trend of plastering concrete over every possible inch in cities needs to go. It may cut down on upkeep (and reduce the need for workers to perform that upkeep), but the price for that is turning tons of ground into do-it-yourself deserts. We could do better.
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