Crushed Stone (1.5″ Minus, Mdot 21Aa, Limestone)

Crushed Stone - MDOT 21Aa Limestone, 1.5" Minus

MDOT 21Aa limestone crushed stone in a 1.5" minus size range is a versatile aggregate engineered for strength and stability. Produced by mechanically crushing limestone, this material contains a blend of stone fragments up to 1.5 inches in diameter, along with smaller particles and fines. The "minus" designation means all pieces are 1.5 inches or smaller, allowing for excellent compaction and load-bearing capacity.

This specific size and gradation make MDOT 21Aa limestone ideal for road base, driveway foundations, parking lots, and heavy-use commercial surfaces. The mix of larger stones and fines creates a dense, stable base that resists shifting and settling, while the limestone composition offers durability and resistance to weathering. Its excellent compaction properties are a major advantage for projects requiring a solid, long-lasting foundation. However, the presence of fines means it may not be suitable for drainage applications where water flow is critical.