Concrete = cement + sand + gravel. Cement insani द्वारा बनाया गया सबसे important अविष्कार है । Nevada Ready Mix specially Elu Chavez और Mike Sherwood का तहे दिल से धन्यवाद मुझे concrete में जमाने के लिए । https://www.nevadareadymix.com/ Six Foot Productions के Brandon Birchak का भी धन्यवाद big fish bowl, safety equipment, planning और filming के लिए। https://www.sixfootcreations.com/ References: Instant stone (just add water), Roots of Progress, https://rootsofprogress.org/instant-stone-just-add-water https://rootsofprogress.org/cement-redux Cement Chemistry and Sustainable Cementitious Materials null 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 Patreon supporters का अलग से धन्यवाद: 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. 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