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There are multiple mixes of concretes for different uses. A common standard mix is 3:2:1 mix 3 parts aggregate, 2 parts sand, 1 part portland cement, mixed with about 1 part water (don't make the slurry too wet), just enough to wet the material and cause it to adhere in a mass plus a little bit. A mix I like is a 3:1-1/2:1 mix. It's a little bit tougher mix. for mortar again a 3:2:1 mix of sand, cement, lime with just enough water to make it workable. For grouts I'll use a little less sand or a fine beach sand, if it's not sticky enough I'll increase the cement.

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12y ago

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