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--- concrete [2020/12/03 13:24]
piotr created
+++ concrete [2021/08/05 03:36] (current)
aga
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 ===== Roman concrete =====
-Modern concrete could break up even in 50 years. However, Roman concrete structures least for thousands of years, because they used volcanic ash, which slowly transforms to aluminum tobermorite[(https://www.sciencemag.org/news/2017/07/why-modern-mortar-crumbles-roman-concrete-lasts-millennia)].
+Modern concrete can break up within 50 years. However, Roman concrete structures last for thousands of years because they used volcanic ash, which slowly transforms into aluminum tobermorite. [([[https://www.sciencemag.org/news/2017/07/why-modern-mortar-crumbles-roman-concrete-lasts-millennia|Science Mag]])]
+===== Highest building =====
+The world's tallest building, the Burj Khalifa, is made of 330,000 m³ of concrete reinforced with 55,000 tonnes of steel. [([[https://www.britannica.com/topic/Burj-Khalifa|Britannica]])]
+===== Heaviest Concrete Structure =====
+Three Gorges Dam in Hubei, China, is the largest and heaviest concrete structure, build using 28,000,000 m³ of concrete and 463,000 tonnes of steel. Its reservoir contains 39.3 km³ (9.43 cubic miles) of water, weighing more than 42,000,000,000 tonnes. [([[https://www.businessinsider.com/chinas-three-gorges-dam-really-will-slow-the-earths-rotation-2010-6?IR=T|Business Insider]])]
+{{tag>construction science}}