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What size aggregate should be used to make the concrete for a 4 inch slab?

1/4 inch crushed stone
3/8 inch crushed stone
1/2 inch crushed stone
5/8 inch crushed stone
3/4 inch crushed stone
7/8 inch crushed stone
1 inch crushed stone
Not sure
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Question: What size aggregate should be used to make the concrete for a 4 inch slab?
Top Answer (34% of 35 votes): 3/4 inch crushed stone.

Answer: 1/4 inch crushed stone
Explanation: 1/4 will be good
Answer: Not sure
Explanation: Many factors dictate aggregate size, including method of placement, regional availability of materials, admixtures etc. In order to minimize cracking, it is ideal to use a mix design containing aggregates ranging from natural sand, to 1-1/4" at an average of 18-22% of each size by weight.
Maven Group LLC
Answer: 3/4 inch crushed stone
Explanation: the standard mix for concrete foundations in 3500# - 3/4" aggregate. This means that the concrete wiil yeild 3500 lbs per square inch and it contains 3/4" aggregate
Barrows Contracting Inc
Answer: 3/4 inch crushed stone
Explanation: gravel as large as 1-1/2 inches should give you no trouble, and large aggregate is actually a good thing to have. For one thing, it helps reduce shrinkage. A lot of shrinkage happens when water evaporates out of the cement paste - which means the more stone and sand there is, the less overall shrinkage. Also, large chunks of gravel interlock against each other, which helps restrain shrinkage.
Colorado Concrete
Answer: 5/8 inch crushed stone
Explanation: 5/8 or 1/2 is recommmended
Answer: 3/8 inch crushed stone
Explanation: This varies depending on manufacturer usually 3/8-1 1/2"
Black Dirt Services LLC
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