Concrete Aggregate

Concrete Aggregate 89 Stone

#89 stone is small crushed rock, sized between about 3/8 inch and the coarse-sand range. The pieces are angular and washed clean, so the dust rinses out and they pack tight without turning muddy. It's the size you reach for when you want something firm and flat under pavers, or a small stone that mixes easily into a concrete batch.

The 89 is a screen size from the ASTM D448 spec. It tells you how big the pieces are and nothing about what rock they came from — you'll find #89 in crushed limestone, granite, or gneiss depending on what's local to the pit. It usually costs a bit more per ton than bigger stone, because more crushing and screening go into each load.

named grade in this family

What people use it for

Coarse stone in concrete mixesBedding and leveling layer under paversPipe and utility beddingSmall-stone drainage fillBase under thin walkways and slabs

How to choose within concrete aggregate 89 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.

All concrete aggregate 89 stone grades

#89 Stone (#16 To 3/8″, Concrete)

Concrete aggregateDrainage baseRoad base

3/8" to No. 16

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Other concrete aggregate families

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Concrete Aggregate 1 Stone

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#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.

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Concrete Aggregate 3 Stone

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#3 stone is crushed rock sized between about 1 1/2 inches and 2 inches.

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Concrete Aggregate 4 Stone

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#4 stone is crushed rock that runs about 1½ inch down to ¾ inch.

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Concrete Aggregate 8 Stone

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#8 stone is small crushed rock, roughly 3/8 inch down to the size of coarse sand.

1 grade→

Concrete Aggregate Crushed Stone

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Concrete aggregate crushed stone is the coarse rock that goes into a concrete mix.

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Browse all concrete aggregate families →