Both sides previous revision
Previous revision
Next revision
|
Previous revision
|
concrete [2020/12/03 13:46] piotr |
concrete [2021/08/05 03:36] (current) aga |
| |
===== Roman concrete ===== | ===== 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 ===== | ===== Highest building ===== |
The World's tallest building, Burj Khalifa, is made of 330,000 m³ concrete reinforced with 55,000 tonnes of steel. | 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 ===== | ===== Heaviest Concrete Structure ===== |
Three Gorges Dam in Hubei, China, is the biggest and heavies concrete structure, build using 28,000,000 m³ of concrete and 463,000 tonnes of steel[(https://www.britannica.com/topic/Three-Gorges-Dam)]. It's reservoir contains 39.3 km³ (9.43 cubic miles) of water, weighting more that 42,000,000,000 tonnes[(https://www.businessinsider.com/chinas-three-gorges-dam-really-will-slow-the-earths-rotation-2010-6?IR=T)]. | 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}} |