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Aggregate Base Course (3″ To 4″, Basalt)

Perfect For

Road baseDriveway foundationParking lot subbaseErosion controlConstruction fill

Aggregate Base Course (Basalt) - 3” to 4”

Aggregate Base Course in a 3" to 4" size range, made from durable basalt, is a robust construction material ideal for foundational support. Basalt, a dense volcanic rock, is crushed and screened to produce angular aggregate pieces that interlock effectively, providing superior load-bearing capacity and stability.




The larger 3" to 4" size is particularly suited for heavy-duty applications where maximum strength and drainage are required. This size allows for excellent water flow, reducing the risk of pooling and frost heave, while the angular basalt ensures the base remains stable under significant weight. Common uses include road and highway sub-bases, large parking lots, industrial yards, and heavy equipment pads. While its size and angularity make it less suitable for surface finishing or compacted top layers, it excels as a foundational layer where strength and drainage are priorities.

Applications & Uses

  • Road baseRecommended
  • Driveway foundationRecommended
  • Parking lot subbaseRecommended
  • Erosion controlRecommended
  • Construction fillRecommended

Frequently Asked Questions

What is Aggregate Base Course used for?
Aggregate Base Course is commonly used for Road base, Driveway foundation, Parking lot subbase, Erosion control, Construction fill.
What size is Aggregate Base Course?
Aggregate Base Course typically ranges in size from 3" To 4".
Where can I get Aggregate Base Course?
You can order Aggregate Base Course for delivery from Hello Gravel. We deliver bulk aggregate materials directly to your site with transparent pricing and no hidden fees.

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