When planning any concrete paving project, one of the most crucial steps is the preparation of the base. At Bracken Paving, serving the Tri-City area in Tennessee and Southwestern Virginia, we know that the foundation of a successful concrete installation often begins with a layer of gravel. Below are four compelling reasons why gravel should be placed under concrete.
Why Gravel Should Be Put Under Concrete
Why Gravel Should Be Put Under Concrete
Enhanced Drainage
One of the primary reasons for placing gravel under concrete is to improve drainage. Without proper drainage, water can accumulate under the concrete slab, leading to moisture-related issues such as erosion and frost heave. Gravel acts as a barrier, preventing water from pooling and allowing it to flow away from the concrete. This not only helps to maintain the integrity of the concrete but also prevents water from seeping into the soil beneath, which can cause soil expansion and contraction.
Increased Stability
Gravel provides a stable foundation for the concrete, distributing the weight evenly and reducing the risk of settling and shifting over time. When concrete is poured directly onto soil, it can settle unevenly, leading to cracks and structural issues. A gravel base acts as a stabilizer, creating a level and compact surface that supports the concrete slab. This is especially important for larger projects, such as driveways and parking lots, where the weight and traffic load can be substantial.
Improved Load-Bearing Capacity
Concrete surfaces often bear heavy loads, whether it's from vehicles, equipment, or foot traffic. A layer of gravel enhances the load-bearing capacity of the concrete by providing additional support and reducing the pressure on the concrete slab. Gravel distributes the weight more evenly, minimizing the risk of cracking and other forms of damage. This is particularly important in commercial settings where the concrete may be subjected to continuous heavy use.
Prevention of Frost Heave
In regions with cold climates, frost heave can be a significant issue for concrete surfaces. Frost heave occurs when water in the soil freezes and expands, causing the ground to lift and the concrete to crack. A layer of gravel helps to mitigate this problem by allowing for better drainage and reducing the amount of water that can freeze beneath the concrete. Gravel acts as a buffer, absorbing the pressure from the expanding ice and preventing the concrete from being pushed upward.
Placing gravel under concrete is a critical step that enhances drainage, stability, load-bearing capacity, and protection against frost heave. At Bracken Paving, we are committed to providing top-quality paving services that include meticulous base preparation with gravel. Serving the Tri-City area in Tennessee and Southwestern Virginia, we ensure that your concrete surfaces are built to last, offering durability, stability, and peace of mind. Contact us!