A “1.5” limestone road base” refers to a crushed limestone aggregate where the largest pieces of stone are approximately 1.5 inches in diameter, including a mix of smaller particles and dust, designed to be compacted into a stable base layer for roads, driveways, and other construction projects, providing excellent support and drainage due to its interlocking nature when compressed; essentially, it’s a crushed limestone material with a maximum stone size of 1.5 inches, ideal for creating a strong foundation under pavement due to its high compaction capabilities. 

• Compaction:

  The key feature of this material is its ability to compact tightly when pressure is applied, creating a solid base. 
• Applications:

  Commonly used as a sub-base for roads, driveways, patios, walkways, and under concrete slabs. 
• Benefits:

  Excellent drainage due to the presence of smaller particles and voids 

  Provides a stable foundation for pavement 

  Can be easily compacted with construction machinery