Concrete Aggregate
Concrete Aggregate 57 Stone
#57 stone is crushed rock screened to fall between about 1 inch and 1/4 inch, with the fines washed out. The pieces are angular, so they lock together under weight instead of rolling around. Water pours right through because there's plenty of open space between the stones. That's why you'll find it under concrete slabs, in driveways, and packed around drain pipe.
The 57 is a size code from the ASTM D448 spec. It tells you how big the pieces are and says nothing about what kind of rock they came from. You'll see it sold as #57 limestone, #57 granite, or #57 river gravel, and it's the same size in every case. Price runs a little higher than plain crusher run because the stone's been washed and screened.
Compare every grade
| Grade | Size | Shape | Washed | Top use | We deliver |
|---|---|---|---|---|---|
| #57 Stone (#4 To 1″, Washed, Concrete) | 1" to No. 4 | — | Washed | Concrete mix | Reference only |
| #57 Stone (1″, Concrete) | 1" to No. 4 | — | — | Driveways | Reference only |
| #57 Stone (1″, Uncrushed, Concrete) | 1" to No. 4 | — | — | Drainage systems | Reference only |
What people use it for
How to choose within concrete aggregate 57 stone
Match the mix design
Batch plants and ready-mix trucks work to a spec. Confirm the size and gradation the plant is running before you order.
Coarse vs. fine
Coarse aggregate gives the mix its strength; fine aggregate fills the gaps. A slab needs both — usually delivered separately and blended at the plant.
Cleanliness matters
Fines and clay contamination weaken the cure. If a load looks dusty, ask for a wash spec sheet before you take delivery.
Material calculator
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Other concrete aggregate families
Concrete Sand
ReferenceConcrete sand is a coarse, washed sand screened to a specific size range so it works in a concrete mix.
Concrete Aggregate Sand
ReferenceConcrete sand is a coarse washed sand with grains up to about 3/8 inch across.
Concrete Aggregate Rip Rap
ReferenceRip rap is large, loose stone dumped along shorelines, creek banks, ditches, and bridge abutments to stop moving water from washing the g…
Concrete Aggregate 67 Stone
Reference#67 stone is crushed rock screened between about 3/4 inch and 1/4 inch, with the fines washed out.
Concrete Aggregate Gravel
ReferenceConcrete aggregate gravel is washed, rounded rock sized to mix into concrete.
Recycled Concrete
ReferenceRecycled concrete is old concrete that's been broken up and crushed back down to gravel size.
Concrete Aggregate 1 Stone
Reference#1 stone is one of the biggest sizes of clean crushed rock you can buy, with pieces roughly 1 1/2 to 4 inches across.
Concrete Aggregate 3 Stone
Reference#3 stone is crushed rock sized between about 1 1/2 inches and 2 inches.
Concrete Aggregate 4 Stone
Reference#4 stone is crushed rock that runs about 1½ inch down to ¾ inch.
Concrete Aggregate 8 Stone
Reference#8 stone is small crushed rock, roughly 3/8 inch down to the size of coarse sand.
Concrete Aggregate 89 Stone
Reference#89 stone is small crushed rock, sized between about 3/8 inch and the coarse-sand range.
Concrete Aggregate Crushed Stone
ReferenceConcrete aggregate crushed stone is the coarse rock that goes into a concrete mix.