Crushed Stone (1.5″ To 3″, 21Aa, Limestone)

Crushed Stone 21Aa Limestone (1.5” to 3”)

21Aa limestone crushed stone in a 1.5" to 3" size range is a durable aggregate produced by mechanically crushing limestone rock. This material features angular, interlocking pieces that provide excellent stability and load-bearing capacity. The 21Aa designation indicates a well-graded mix, which means it contains a blend of stone sizes within the specified range, enhancing compaction and structural integrity.




The larger 1.5" to 3" size makes this crushed stone ideal for heavy-duty applications where robust support and drainage are required. Common uses include base layers for roads, driveways, parking lots, and construction pads, as well as erosion control and large-scale drainage projects. The limestone composition offers natural strength and longevity, while the angular shape helps lock the material in place, reducing shifting and settling. While this size is excellent for stability and drainage, it is less suitable for areas requiring a smooth, compacted surface.