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What sand for a concrete mix ?

Posted: Sun Apr 12, 2009 4:28 pm
by ssjdc
I need to lay a 6in slab for a hot tub and would like to use the materials I have lying around. I have plenty of 20mm aggregate and soft sand. Normally sharp sand is used of course, but would it cause a problem if I used soft sand ? I will also be putting in a reinforcing mesh.
Thanks

Posted: Mon Apr 13, 2009 10:54 pm
by rosebery
You know the answer already because its in your post. Building sand doesn't make good concrete.

Cheers