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I read that the Sahara is useless, for example, because desert sand is rolled rounded. The only sand that concrete can use is the dug up, sharp cornered kind.
by JulianMorrison 8y ago
I read that the Sahara is useless, for example, because desert sand is rolled rounded. The only sand that concrete can use is the dug up, sharp cornered kind.
- MarsAscendant 8y agoI wonder if it's possible to "roughen up" smooth sand for this purpose. Shoot it against itself in a special machine, thus breaking it to smaller, sharp-edged pieces... or something. "Large Saharan Collider – not what you think it is!"
- mobilefriendly 8y agoConcrete "sand" is made by smashing quartz into tiny rough bits.