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Crusher run limestone, also known as crush and run, limestone crusher run, dense-graded aggregate, road base, or in some regions Type 2 aggregate base, is a compactable blend of crushed limestone, smaller stone, stone dust, and fines. It is commonly produced as 3/4-inch minus material, meaning the mixture contains particles ranging from approximately 3/4 inch down to fine limestone dust. Exact gradation may vary by quarry and regional specification.
The combination of coarse stone and fines allows crusher run limestone to compact into a dense, firm, and level foundation. Larger particles provide load-bearing strength, while the finer material fills the spaces between the stone and helps the aggregate lock together under pressure. When properly graded, moistened, and mechanically compacted, it creates a durable base that resists shifting, rutting, and settlement.
Crusher run limestone is one of the most widely used base materials for residential, commercial, and roadway construction because it provides dependable compaction, structural stability, and long-term support. It performs especially well beneath driveways, parking areas, asphalt, concrete, pavers, and other finished surfaces that require a strong, accurately graded foundation.
Common Applications of Crusher Run Limestone
- New driveway construction and resurfacing
- Road base and sub-base preparation
- Parking areas and high-traffic gravel surfaces
- Equipment pads and construction access areas
- Base layer beneath asphalt and concrete
- Foundation support beneath slabs and hardscapes
- Walkway, patio, and paver base preparation
- Site grading and stabilization projects
