Seonglae Cho인간이 물빼고 가장 많이 사용하는 재료로 대부분 석회석으로 이루어짐
Cements
세상에서 제일 많이 쓰는 재료?!
칼슘 칼륨 죄송합니다...
철근 없는게 잘못이지 콘크리트는 잘못 없어!
인간이 만든 물질중 가장 압도적으로 많이 쓰는 재료인 시멘트와 콘크리트에 대해서 알아보죠!
시멘트에 직접 파묻혀서요!
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Concrete = cement + sand + gravel. Cement is the most important man-made material on Earth. Offset your carbon footprint on Wren: https://wren.co/veritasium . For the first 100 people who sign up, I will personally pay for the first month of your subscription!
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A huge thank you to Nevada Ready Mix for being willing to bury me in concrete, especially Elu
Chavez and Mike Sherwood. https://www.nevadareadymix.com
And to Brandon Birchak of Six Foot Productions for providing the big fish bowl, safety equipment, planning and filming: https://www.sixfootcreations.com
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References:
Instant stone (just add water), Roots of Progress, https://rootsofprogress.org/instant-s...
https://rootsofprogress.org/cement-redux
Cement Chemistry and Sustainable Cementitious Materials
/ @cementchemistryandsustaina9629
Ahmad, S., Lawan, A., & Al-Osta, M. (2020). Effect of sugar dosage on setting time, microstructure and strength of Type I and Type V Portland cements. Case Studies in Construction Materials, 13, e00364. – https://ve42.co/Ahmad2020
Seymour, L. M., Maragh, J., Sabatini, P., Di Tommaso, M., Weaver, J. C., & Masic, A. (2023). Hot mixing: Mechanistic insights into the durability of ancient Roman concrete. Science advances, 9(1), eadd1602. -- https://ve42.co/Seymour2023
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Special thanks to our Patreon supporters:
Emil Abu Milad, Tj Steyn, meg noah, Bernard McGee, KeyWestr, Amadeo Bee, TTST, Balkrishna Heroor, John H. Austin, Jr., Eric Sexton, john kiehl, Anton Ragin, Benedikt Heinen, Diffbot, Gnare, Dave Kircher, Burt Humburg, Blake Byers, Evgeny Skvortsov, Meekay, Bill Linder, Paul Peijzel, Josh Hibschman, Mac Malkawi, Juan Benet, Ubiquity Ventures, Richard Sundvall, Lee Redden, Stephen Wilcox, Marinus Kuivenhoven, Michael Krugman, Cy 'kkm' K'Nelson, Sam Lutfi.
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Written by Derek Muller
Edited by Trenton Oliver
Filmed by Raquel Nuno, Austin Bradley and Bryson
Animated by Ivy Tello & Mike Radjabov
Additional video/photos supplied by Getty Images & Pond5
Music from Epidemic Sound & Jonny Hyman: the Bill Wurtz inspired ‘Skyscrapers are made of sea shells’
Produced by Derek Muller, Petr Lebedev, & Emily Zhang
https://youtu.be/yKI48XW_2BA?si=ooLfnae01wfH5cKS
Low Carbon Cement
Low-Carbon Cement Can Help Combat Climate Change
Concrete, the most widely used human-made material, shapes much of our built world. The manufacture of one of its key components, cement, creates a substantial yet underappreciated amount of human-produced carbon dioxide: up to 8 percent of the global total, according to London-based think tank Chatham House.
https://www.scientificamerican.com/article/low-carbon-cement-can-help-combat-climate-change/
'Absolute miracle' breakthrough provides recipe for zero-carbon cement
Concrete and steel production are major sources of CO2 emissions, but a new solution from Cambridge could recycle both at the same time. Throwing old concrete into steel-processing furnaces not only purifies iron but produces “reactivated cement” as a byproduct. If done using renewable energy, the process could make for completely carbon-zero cement.
https://newatlas.com/materials/concrete-steel-recycle-cambridge-zero-carbon-cement/
Decarbonize
This startup CEO claims he can completely decarbonize the cement industry
Brimstone Energy is trying to reduce CO2 emissions from the production of cement, which accounts for about 8% of global carbon emissions.
https://www.cnbc.com/2023/10/17/this-startup-ceo-claims-he-can-completely-decarbonize-the-cement-industry.html
In a world-first, scientists create eco-friendly cement from algae
Every year about two gigatons (2,000,000,000,000 Kg) of CO 2 is released into our environment due to the production and usage of cement. According to a report from the United States Environment Protection Agency (EPA), cement among the top ten biggest sources of industrial pollution.
https://interestingengineering.com/biogenic-limestone-from-microalgae
