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

1/4 inch crushed stone
6%
3/8 inch crushed stone
13%
1/2 inch crushed stone
20%
5/8 inch crushed stone
3%
3/4 inch crushed stone
34%
7/8 inch crushed stone
6%
1 inch crushed stone
6%
Not sure
6%
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Question: What size aggregate should be used to make the concrete for a 4 inch slab?
Top Answer (34% of 29 votes): 3/4 inch crushed stone.

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: 3/4" is typical.
QUALITY CONTRACTORS
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
ProMatcher
Answer: 3/8 inch crushed stone
Explanation: This varies depending on manufacturer usually 3/8-1 1/2"
Black Dirt Services LLC
Answer: 3/4 inch crushed stone
Explanation: This is just the norm. Compaction is the key
h and h company
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