concrete
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What’s The Difference Between Cement, Concrete And Mortar?
Video: Any handyman worth his salt should know the difference between cement, concrete and mortar. I am not that handyman. They’re all just grey sludge to me. But This Old House explains the difference between the three in a very easy to understand way.
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How We Could Build A City On Mars
If we want to someday live on Mars, spaceships won’t be enough. We would need a Martian city — and this is how we might build one.
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What Is Concrete?
The most popular man-made material isn’t steel, plastic, or aluminium — it’s concrete. But what the heck is concrete, really? That may sound like a silly question, but most of us don’t actually know. Do you? If not, read on, because we have the answer.
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China Used More Concrete In Three Years Than The US In 100 Years
Briefly: Bill Gates has an incredible statistic: According the USGS’ cement statistics, China has used more concrete from 2011 to 2013 (6.6 gigatons) than the United States in the entire 20th century (4.5 gigatons). It blows my mind but, then again, as Gates point out, look at Shanghai’s evolution.