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There are two main types of driveways - firm surfaces like stone, concrete or asphalt, and loose surfaces using aggregate like gravel or crushed stone. Different layers of materials with varying properties are needed underneath the surface layer. A bedding layer is typically used under a firm surface and needs coarse sand or grit to avoid being too soft. A sub-base layer below provides strength to support vehicle weight and prevent the driveway from sinking if too weak. Larger aggregates are placed at the b
- Author
- Le Lanh
- Language
- EN