1. The marble block must have the shape of a right-angled parallel hexahedron.
2. The length, width du, and height of the block allow extreme tolerance, flatness, and angle tolerance. dao
3. Appearance quality: the tone pattern of the same batch of blocks should be basically the same.
The appearance quality grades such as missing corners, missing edges, and cracks of the block.
4. Physical properties:
The bulk density is not less than 2.60g/cm cubic meter.
The water absorption rate is not more than 0.75%.
The dry compressive strength is not less than 20.2MPa.
The bending strength is not less than 7.0MPa.
5. Bulk density and water absorption rate shall be carried out in accordance with the provisions of GB9966.3.
Dry compressive strength shall be carried out in accordance with the provisions of GB9966.1.
The bending strength shall be carried out in accordance with the provisions of GB9966.2.
The acceptance volume is calculated with the minimum size of the marble block.
Specification size is expressed by the smallest size of the marble block.