Crushed Concrete Vs. Rock

Crushed Concrete Qualities

Crushed concrete is sourced from demolished structures. When processed, pieces of metal, glass and contaminants are removed. Slabs are broken down into different sizes, and smaller pieces break down into a powder-like consistency.

While chosen for its durability, the hard edges and inconsistent sizes make crushed concrete a less attractive choice for surfaces. However, it is a fitting option for a foundation. The pieces pack tightly together when tamped, leaving enough space for moisture to pass through. Crushed concrete can also reinforce a dry-stacked stone retaining wall, hold fence posts in place or prevent weeds from popping up beneath a deck and other hard-to-reach areas.

Landscape rocks have a broader range of colors and shapes than crushed concrete. They include smooth, round river rocks and small pea gravel. Likewise, rock has a wider price range depending on the type used. Gravel is made of quarried or crushed rocks that range from 3/8 inch to 1 1/4 inches, while naturally small rocks are typically chosen for their variation of round shapes and sizes. Rocks come in many colors including white, brown, grey, translucent, green, red and more.

Like crushed concrete, crushed rock can be tamped down to form a hard, sturdy base. Loose gravel offers a casual alternative for driveways, walkways and patios. It is an attractive choice for inorganic mulch and brings out the rustic character of a yard when laid as a border around gardens, water features or fire pits.