Crushed Stone (#4 To 5/8″, Ca70)

Crushed Stone Ca70 in #4 to 5/8” Size Range

Crushed stone with a Ca70 attribute in the #4 to 5/8" size range is a versatile aggregate produced by mechanically crushing durable rock into angular fragments. The Ca70 designation typically refers to a high-calcium content, making this material especially suitable for applications where chemical stability or pH control is important, such as in certain concrete mixes or agricultural uses.




The #4 to 5/8" size range offers a balance between compaction and drainage. These mid-sized, angular particles interlock well, providing a stable base for driveways, walkways, and road construction, while still allowing for effective water runoff. This makes the material ideal for both residential and commercial projects, including sub-bases for patios, parking lots, and as a drainage layer behind retaining walls. The high calcium content can also be beneficial in environments where soil amendment or acid neutralization is needed. However, the angular nature of the stone means it may be less comfortable for barefoot traffic and can be harder to spread evenly compared to rounded aggregates.