What are the advantages of paving gravel under concrete? If it needs to be paved, does it need to be compacted? How thick should the pavement concrete be laid on the construction site?
Paving macadam under concrete as cushion can prevent concrete from being polluted, reduce the separation between concrete aggregate and mortar and ensure the strength of concrete. The thickness of gravel cushion is generally 10cm, so as to ensure that the basement has enough bearing capacity, and the gravel does not need to be compacted. In the case that there are not many heavy trucks on the construction site, the general concrete can be 15-20cm, and the heavy trucks can be appropriately thickened.