Aggregate Base Course (3/4″ To 1.5″, Ca-6, Idot, Grade 8, Limestone)

Aggregate Base Course - Ca-6, IDOT, Grade 8 Limestone (3/4” to 1.5”)

Aggregate Base Course with Ca-6, IDOT, Grade 8 specifications in a 3/4” to 1.5” size range is a high-quality limestone material engineered for strength and stability. Produced by crushing and screening natural limestone, this aggregate meets strict Illinois Department of Transportation (IDOT) standards, ensuring consistent gradation and performance for demanding construction projects.

The 3/4” to 1.5” size range offers an optimal balance between compaction and drainage. The angular limestone particles interlock tightly, creating a stable base that resists shifting and settling, while the graded mix allows for efficient water runoff, reducing the risk of pooling or frost heave. This makes it ideal for use as a sub-base in roadways, parking lots, driveways, and under concrete slabs. It is also commonly used for pathways, patios, and as a foundation for retaining walls.

Pros of this material include excellent load-bearing capacity, reliable compaction, and reduced dust compared to finer aggregates. Its angular shape enhances stability, but it may be harder to spread by hand than smaller or rounded materials. Overall, Ca-6, IDOT, Grade 8 limestone aggregate base course is a trusted choice for both residential and commercial projects requiring a durable, long-lasting foundation.