#57 Stone (1″, Uncrushed, Concrete)

#57 Stone, Uncrushed, Concrete, 1" Size Range

#57 stone in a 1" size range, uncrushed and suitable for concrete, is a naturally occurring aggregate typically sourced from riverbeds or gravel pits. Unlike crushed stone, uncrushed #57 stone retains its rounded or irregular shapes, which results from natural weathering and erosion rather than mechanical crushing.

The 1" size offers excellent drainage properties, making this material ideal for use in concrete mixes where permeability and reduced compaction are desired. The uncrushed attribute means the stones have smoother surfaces, which can slightly reduce the bond strength in concrete compared to angular, crushed aggregates, but it also minimizes dust and fines. Common applications include use as coarse aggregate in concrete production, drainage layers, septic system installations, and as a base for driveways or walkways where a stable yet permeable foundation is needed. While uncrushed #57 stone is less suitable for tightly compacted surfaces, its natural shape and size make it a preferred choice for projects prioritizing drainage and ease of handling.