There are regulations for stone quality acceptance. Analysis of stone decoration regulations

1. The academic study of plate size and color difference
Check and accept the quality of the selected stone. The surface of the stone is required to be flat, the geometric size is accurate, the edges are neat, and the edges and corners must not be damaged. The surface of the plate must not have hidden scratches, color spots that exceed the standard, color lines, weathering and other defects. The color and pattern should be coordinated and consistent; and there must be a certificate of conformity or proof of acceptance according to the design drawings.
Before the start of the finishing project, the plate should be classified and matched according to the type, size and color of the plate. When the size deviation is too large, it should be classified as large deviation. Plates with patterns and patterns should be tried first. Then they are numbered and stacked in the order of pasting. The plates to be pasted are stacked upright and cannot be laid flat. In order to prevent rain pollution, the uninstalled plates should be covered with tarpaulins. The dry hanging plate type and color are selected in the processing plant.

2. The academic study of plate pasting
When installing by pasting, check whether the ratio of cement mortar or chemical adhesive is correct. The facing plate should be firmly pasted without hollows, and the surface should be flat and clean. The joints should be horizontal and vertical, with the same width. When the panels are pasted in sections, the joints should be flat and the seam width should be consistent. When installing decorative surface stones on load-bearing walls or columns, construction should be carried out only after the structure has settled and stabilized. A certain gap can also be left at the top or bottom of the structure to prevent the panels from being directly subjected to load and being cracked due to the compression of the structure.

After the finishing project is completed, the decorative surface should be cleaned and protective measures should be taken to prevent damage or contamination of the decorated surface during other work.

3. Academics on dry hanging construction
The dry hanging construction of stone should be carried out after the quality inspection of the substrate or base layer is qualified.
Before installing decorative surface stones by dry hanging method, it is necessary to check whether the installation and fixing method, anti-corrosion treatment of the truss surface, stability, strength and rigidity of the components meet the requirements of the design drawings. Check whether the material, surface treatment, shape, geometric dimensions, etc. of the installation components and anchoring parts meet the requirements of the design drawings. If the stone joints need to be sealed, the selection of sealing materials and sealants should meet the following requirements: sponge strips should be used as the base, sealants and structural adhesives should be products of the same company, the color of the sealant should be coordinated with the color of the stone, and according to the performance of the sealant, its penetration depth should not be less than 5mm, and the surface of the board should be cleaned without any residual glue.