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 ...
Interesting info about the sand! The same problem applies to fracking sand used for oil and gas extraction. There are few sites in the United States that can produce the sand with the required properties and it has to be hauled long distances as well.
Sustainable there is that ridiculous word again. The idiot author uses it to describe a frivolous artwork installation. If these leftist kooks were truly concerned about sustainability they wouldnt build such useless things in the first place. Whats the point of having sustainable frivolities?
Concrete has been used for 6,000 years without leftist nut jobs worrying about sustainability. It sustains itself just fine without invoking the Woke BS Du Jour.
With all the evidence about CO2 out there for ages now, what’s the big deal? It is not a pollutant in any way, shape, or form at normal atmospheric levels. It is plant food.
Those were the last years of the great Industrial Revolution late 1910’s when Americans who were well-educated (6th grade back then was equal to college grads today), ambitious and ethical could take advantage of the Opportunity freedom gave them.
Remarkably, the article does not mention that concrete slowly reabsorbs carbon dioxide as it ages.
“(6th grade back then was equal to college grads today)”
Good point! IIRC, my neighbor dropped out of school in the 3rd grade to go to work at the cement plant doing odd jobs to earn money for his family.
I hate to say it but Grandfather when he wrote a letter had the eloquence and culture of the 19th c. That’s how superb schools were before John Dewey’s Progressivism swept thru in the 20’s and 30’s. Grandma from Prussia said her schooling (tutoring at home) was harder than mom’s NYC schooling in the 30’s which was superior to mine in the 50’s (Dick and Jane, no phonics, only 1 year of diagramming in Jr High.) Yet my schooling still included mostly well written textbooks in chronological order and reading Shakespeare and other classics throughout. Still my mom had to edit my papers, sigh.
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