Gravel is used in both construction and landscaping as a foundation and decorative element, respectively. It comes in a wide array of sizes, colors, and shapes and plays an important role when mixed with other materials such as cement and sand. The concrete, a mixture of gravel, cement, sand, and strengthening materials, is used as a base for roadways, driveways, and hardscape areas. Crushed stones, on the other hand, are similar to gravel in appearance, but unlike gravel, which is formed naturally through erosion and weathering process, the former has sharp, unfinished edges.
The size of the gravel dictates where it’s used and for what purpose. In general, gravel comes in various sizes as described below:
- Pea Size: This type of gravel is about a quarter to half-inch in diameter. It’s used in gardens and landscapes, for walkways, driveways, and pool decking.
- Bluestone: This type of gravel is about a three-quarter inch in diameter and prized for its colorful look. It has a silvery hue with a blue undertone and turns bluish-gray when wet. Bluestone is extensively used as sub-base rock in hardscape and drainage applications.
- #10 Size: Also known as screenings, these are small gravels about one-eighth inch in size and look similar to coarse sand. They are used for roadway beds as fillers and in slab construction.
- #57 Size:This size is one of the most popular forms of gravel used in landscapes. The individual gravels are about the size of a quarter and are often preferred for driveways and walkways for their comfort and curb appeal.
- #4 Size: This type of gravel is about 1 to 2.5 inches in diameter, almost the size of a golf ball. Due to its size, it’s used as decorative stones instead of bases for driveways or walkways.
- #1 Size: This is the largest of all gravel sizes. #1 size is solely reserved for decorative purposes, in gardens, and along the walkways.
For more information on various concrete gravel types and outright Baltimore aggregates delivery, contact ReAgg today! Call ReAgg at (301) 336-6700 for more information about recycled concrete.