Recycled Materials
Recycled Materials Concrete Aggregate
Recycled concrete is old concrete that's been crushed and screened back into usable rock. Think busted-up sidewalks, torn-out driveways, and demo slabs run through a crusher, with the rebar pulled out by a big magnet. The pieces come out angular, with bits of gray mortar still stuck to the stone inside. It looks and works a lot like regular crushed stone, just lighter in color and a bit lighter per yard.
You'll hear it called RCA, crushed concrete, or recycled base. The name tells you where the rock came from, not how big the pieces are. A #610 recycled is a dense-graded mix that packs tight under a driveway or road, while plain crushed concrete usually runs coarser and looser. It runs cheaper than quarried stone because the feed is demolition debris instead of blasted rock, which is why folks reach for it on base and fill jobs where nobody's going to see the stone once the work is done.
What people use it for
How to choose within recycled materials concrete aggregate
Base under something else
Reclaimed concrete or asphalt millings work great as base under a driveway or slab. The layer above hides what's underneath.
When the top layer is visible
Recycled base compacts to grey or dusty tan, not the clean look of fresh crushed stone. Fine under a surface course, off if it's the finish.
Check the source
Reclaimed loads vary by demo site. A supplier who can tell you where the feedstock came from is a better bet than the cheapest yard in town.
All recycled materials concrete aggregate grades
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Other recycled materials families
Recycled Aggregate
ReferenceRecycled rock is old concrete and asphalt that's been crushed down and screened to size.
Screenings
ReferenceScreenings are the fine leftovers from crushing rock.
Recycled Materials 57 Stone
ReferenceRecycled #57 stone is old concrete that's been crushed and screened down to pieces between about 1 inch and 1/4 inch.
Recycled Brick
ReferenceRecycled brick is old clay brick crushed down into chunks and chips.
Recycled Materials Asphalt Aggregate
ReferenceRecycled asphalt is old road pavement that's been ground back down into gravel-sized pieces.
Recycled Concrete Aggregate
ReferenceRecycled concrete is old concrete that's been crushed and screened into usable sizes.
Recycled Materials 1 Stone
Reference#1 recycled stone is crushed old concrete screened to a large size, roughly 1½ to 3½ inches across.
Recycled Materials 4 Stone
Reference#4 recycled concrete is old concrete that's been crushed and screened to pieces between about 3/4 inch and 1½ inches.
Recycled Materials 610 Stone
ReferenceRecycled 610 stone is old concrete that's been crushed and screened down to a spread of sizes from about 1 inch to fines.
Recycled Materials 8 Stone
Reference#8 recycled stone is crushed recycled concrete screened between about 3/8 inch and 1/8 inch.
Recycled Materials Aggregate Base Course
ReferenceRecycled base is crushed-up old concrete — sidewalks, curbs, broken slabs, foundations — run through a crusher and screened down to a mix…
Recycled Sand
ReferenceRecycled sand is the fine stuff left over when crushed concrete, brick, or old asphalt gets processed.