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twenty-five percent of Africa is literally covered in sand. Sand comes in different granularity and compositions, but for concrete this is often irrelevant.
by once_inc 4y ago
twenty-five percent of Africa is literally covered in sand. Sand comes in different granularity and compositions, but for concrete this is often irrelevant.
- formerly_proven 4y agoActually it matters quite a bit. That's why countries which are literally filled with desert sand import river/sea sand for their construction. Finding a way to make desert sand usable for construction concrete would be significant.
- valdiorn 4y agoUh, for concrete the granularity and composition is VERY important. In fact it's one of the most important parameters you can tweak in a concrete mix. To the point that weird stuff like this happens quite frequently: https://www.quora.com/Is-it-true-that-Saudi-Arabia-imports-sands-from-Australia-If-so-why https://www.quora.com/Is-it-true-that-Saudi-Arabia-imports-s... My local DIY store here in the UK carries some 8 different types of sand, all for different purposes.