Types of Gravel Used in Construction
Construction gravel, which comes from crushed limestone, is utilized to make a solid foundation. Whether you are making a driveway, patio or walkway in your own backyard, a gravel is a perfect choice. Bigger rocks are dug in a quarry and crushed into smaller pieces. The outcomes – construction level – is categorized by coarseness and size. Picking the right kind of gravel to utilize as the foundation for your project means examining the size and climate of construction, and taking into consideration what will be lying atop of the pavers once the project is done.
QUARRY ROCKS AND RECYCLED CONCRETE GRAVEL
You can consider using recycled gravel and salvaged quarry rocks on your pavers. Did you know that recycled gravel is made by crushing salvaged and used-up concrete? It also comes in different sizes like coarse, medium and fine as common types of gravel.
In case you didn’t know yet, quarry rocks are the left over from inland quarry jobs. Both of such options help restore limestone rock, from which the commercial gravel is derived, and both of them come at a cheaper cost compared to new gravel. Further, both are sustainable resources for paver foundation material.
When your driveway sees much traffic or maybe holds more than one vehicle at a time, you can consider utilizing coarse or big gravel to support the pavers. On the other hand, if you have a poorly draining soil or clay or your yard sees a lot of runoff and rainwater, you can consider using this type of gravel beneath your construction. Coarse gravel is the biggest type of gravel and feature optimum drainage and could support the heftiest of loads.
On the other hand, medium gravel is the type of gravel that is go-to for the majority of pavers. It pacts tightly however not as tightly as fine gravel and leaves enough space for water to drain through. Perfect for regular and loamy soil with enough amount of drainage, this type of gravel utilized in construction is middle-of-the-road when it comes to supporting and drainage. Moreover, a layer of medium gravel, which is around 6 to 8 inches thick has the ability to support to the heaviness of the majority of cars; however is also appropriate to lighter use like heavy foot furniture and traffic.
Last but not the least, fine gravel has a texture of slightly coarser compared to sand and compacts to a solid surface. Due to its gravel compacts so firmly, it does not enable for enough drainage and must be utilized where water collection isn’t a concern, such as whenever using pavers to create the floor or covered enclosure or patio, or where the temperatures hardly drop below freezing. Besides, fine gravel could stand up to the heaviness of large foot traffic and furniture but shouldn’t be utilized for many heavy-duty applications like driveways. For well-draining or sandy soil, fine gravel stops drainage, while water can cause your pavers on top to break or buckle.