3 ms·
Plenty of sand in the Sahara, last I checked.
by Retra 8y ago
Plenty of sand in the Sahara, last I checked.
- DanBC 8y agoConcrete doesn't need "sand", it needs "sharp sand". You get sharp sand from river beds. You don't get it from deserts. The wind erosion causes round grains, and those are not useful for concrete.
- drcharris 8y agoNice little summary here https://www.youtube.com/watch?v=V2349cn0-T0 https://www.youtube.com/watch?v=V2349cn0-T0