RCA for Driveways: Complete Guide to Cost, Install & Where to Buy (East TN)

If you're weighing whether to use RCA for a driveway — a new one, a resurfacing, or replacing worn-out gravel — this guide covers the four things that matter: what RCA actually is, how much you'll need, what it costs, and how to install it right so it lasts.

Short version: RCA (recycled concrete aggregate) is cheaper than crushed limestone, packs harder, and is the right call for most residential and light-commercial driveways in East Tennessee. Here's the detail.

What Is RCA?

RCA stands for recycled concrete aggregate. It's the material you get when you crush old concrete — driveways, foundations, sidewalks, curbs — and screen it back into a specific particle size. The result is a mix of fines (fine dust) and larger pieces (up to 1.5 inches or so) that lock together tightly when it's spread and rolled.

Compared to crushed limestone gravel:

• Cost: RCA is typically 30-50% cheaper per ton. Because it's a byproduct of demolition, not a quarry operation, the input cost is lower.
• Packing: RCA packs harder than fresh limestone because it already has cement dust and micro-fines that continue to cure lightly under moisture.
• Color: Slightly greyer, less bright white than fresh limestone. Cosmetic only.
• Weight: Similar unit weight to limestone. Same trucking cost per yard.
• Availability: Every region has some. In East TN, we crush it fresh on-site.

The 3 Sizes You'll See

Not all RCA is the same. When you're pricing it out, know which size you need:

| Size | Also called | Best for | |---|---|---| | 1.5" down | RCA crusher run, RCA base | Driveway base, road base, parking pads. This is what most people mean when they say "RCA for a driveway." | | 3/4" clean | Washed RCA | French drains, pipe bedding, retaining wall drainage. Cleaner (no fines) but doesn't pack as hard. | | 2" clean | Larger clean | Rip-rap, drainage channels, first course under crusher run on very soft subgrade. |

For a driveway, you want 1.5" down / crusher run RCA. It's the one designed to compact into a hard, stable surface.

How Much RCA Do You Need?

Math for a typical residential driveway:

Formula: Length (ft) × Width (ft) × Depth (ft) ÷ 27 = cubic yards Then: Cubic yards × 1.4 = tons (RCA weighs roughly 1.4 tons per cubic yard)

Example — 100-ft × 12-ft driveway, 4 inches deep:

• 100 × 12 × 0.333 = 400 cubic feet
• 400 ÷ 27 = 14.8 cubic yards
• 14.8 × 1.4 = ~21 tons

Order 6 inches of loose material for a 4-inch compacted depth. RCA compacts about 25-30% under a roller or over time from vehicle traffic.

Rule of thumb: A typical residential driveway takes 15-25 tons. A 100-ft farm road at 6 inches takes 40-60 tons. If your driveway is longer than 200 ft, get delivery in a tandem or tri-axle instead of pickup loads.

We have a gravel calculator that does the math for you including delivery adjustments.

What Does It Cost?

RCA per ton at the yard, picked up: $15-$35 depending on size and volume.

• 1.5" crusher-run RCA: usually the cheapest — the base grade for driveways.
• 3/4" clean and 2" clean: slightly more per ton because of the extra screening.

Delivery: adds a per-mile trucking fee. A tandem dump load (14-18 yards, ~20-25 tons) delivered within Blount or Knox County typically runs an additional $150-$300 depending on distance.

Full residential driveway example (21 tons at $20/ton picked up):

• Material: $420
• Delivery if not picking up: $150-250
• Total: $570-670 delivered

For comparison, the same driveway in crushed limestone gravel would run about $700-1,000 for material alone. RCA is the value pick.

Call (865) 999-0857 for a live quote before ordering — pricing moves with fuel and quarry rates.

How to Install an RCA Driveway

The failure modes for RCA driveways are all install problems, not material problems. Get these four things right and the driveway lasts:

1. Prep the subgrade. Strip the topsoil. Grade to the finished driveway shape (with a 2% crown for drainage — higher in the middle than at the edges). Compact the subgrade with a plate compactor or a small roller. If the soil is soft clay, put down a geotextile fabric first — it stops the RCA from sinking into the clay over time.

2. Lay it 4-6 inches deep. For a car-only driveway on stable ground, 4 inches compacted is plenty. For a driveway that sees a delivery truck or heavy equipment, go 6 inches. For a farm road that sees loaded gravel trucks or tractors, go 8 inches or run a two-course system (larger clean stone below, crusher run on top).

3. Roll it in courses. Don't dump all 6 inches at once. Lay 2-3 inches, roll it, then lay the next lift, roll again. This is how you get the material to pack hard instead of stay fluffy. Rent a walk-behind roller or borrow a plate compactor for small jobs; use a roller truck for anything over 50 feet.

4. Contain the edges. Without edging (landscape timbers, poured concrete curb, or a well-established grass edge), the RCA will migrate outward under traffic. Every 3-5 years you'll be raking material back into the driveway. Edging locks it in.

Maintenance: What to Expect Year by Year

Year 1: Small settlement in soft spots. Roll or drive over spots that dip; add half a yard if needed. Years 2-3: Fines wash out with hard rain. You'll see the driveway looking chunkier than when installed. Normal. Year 3-5: Top-off with a few tons of fresh crusher-run RCA. Spread it in low spots and along the edges. Roll it in. Year 5+: Repeat the top-off. A well-installed RCA driveway can go 10-15 years before it needs any significant work beyond top-offs.

The failure mode we see most often is not the material wearing out — it's people skipping the compaction step at install and getting a fluffy surface that ruts under the first heavy load.

When NOT to Use RCA

RCA is the right pick for most driveways, but not all:

• You want a specific bright-white look — limestone gravel or #57 stone might be worth the premium.
• You want a paved driveway — RCA is a base material. If you want an asphalt or concrete surface, RCA goes underneath as base, not on top.
• Very steep grade with erosion risk — RCA can wash on steep slopes. Consider a heavier stone or an actual paved surface for slopes over 10%.

FAQ

See structured FAQ at top of post. Common questions covered: what RCA is, how much you need, cost per ton, RCA vs limestone, lifespan, where to buy.

Getting RCA for Your Driveway in East TN

SMSG stocks RCA in all three sizes at our Maryville yard. We deliver throughout Blount, Knox, Sevier, Loudon, and Anderson counties. Whether you're paving 100 feet or 1,000, we can get material on your job — usually same-day or next-day for standard sizes.

Get a delivery quote or call (865) 999-0857. We're at 245 Brookdale Rd, Maryville — directions here.

You can also pull up to the yard and pick up as many buckets or shovels as you need — flat rate, no minimum. Open Mon-Fri 7am-5pm and Saturday 8am-noon.