Xi'an renovation classroom floor tile laying construction process, process and acceptance standards
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1. The standard procedures for laying floor tiles are: sweeping and finishing the grass-roots level → cement mortar leveling → calibration height, bombing line → installation of standard blocks → selection of materials → infiltration → paving → irrigation → cleaning → maintenance delivery.
2, the old room ground must be fully hairy, concave depth is not less than 0.5mm, spacing 5cm, and then brush the net slurry again. Be careful not to collect water and prevent it from seeping downstairs through the panel seams.
3, for the requirements of the drainage slope, such as the bathroom, bath room, etc., should be controlled according to the slope of the slope of the tiling line.
4, the acceptance of the substrate: the surface leveling with a 2m check rule, the deviation shall not exceed 5mm, the elevation deviation shall not be greater than ± 8mm.
5, stone, floor tiles, specifications, colors and patterns should meet the design, the requirements of residents, decorative panel surface may not have scratches, lack of edge defects such as quality defects. Do not use outdated and agglomerated cement as bonding material. All floor tiles must be unpacked before being laid.
6, before laying tiles should be carefully measured after the use of computer typesetting as much as possible, and select a reasonable plan to count the number of specific tiles to arrange beautiful and reduce the loss for the purpose, and focus on checking the room geometry is neat.
7. The volume ratio of mortar used is 1:2.5 for cement mortar (specifically, the grips are: hand clumping and flowering), the adhesive layer shall not be less than 12mm thick, the mortar is full, and the cement shall be used in a unified manner. 800×800 polished tiles or granite use 1:4～1:6 cement mortar volume ratio. More than 600 × 600 (including 600 × 600), 500X500 specifications tiles should be used dry stick method. Light-colored granite and marble are applied with white cement to prevent flooding.
8. Before the tiles are laid, they should be soaked in water and dried to reach the outside dry and wet inside.
9. Before laying, you must pull the crosshair in the horizontal and vertical directions.
10, when laying tiles, with the shop with the clear, always keep clean and clean. (clean with cotton yarn or sawdust), and clean the cement mortar in the brick joints.
11, before the completion of the work, the first clean joints, with white cement and talc powder putty, jointing putty lower than the brick 1mm.
12. When tiles are laid, other types of work must not be contaminated and should not be trampled on. After the tiles are finished, they should be sewn within 24 hours. In order not to affect the construction of other projects, solid wood panels can be laid on the ground for people to walk.
13. After the laying of the floor tiles is completed, after checking for errors such as lack of flatness, hollowing, color difference, etc., cover and protect them with cardboard. The nails on the cardboard must be removed. The cardboard and cardboard must be sealed tightly with a sealing glue to prevent Including debris.
14. It is forbidden to use water when there is no drainage or no water storage equipment, especially to prevent the board used for soaking floor tiles from being indirectly polluted.
15. The basic filling of flower ponds and toilets is filled with wet granulated concrete and carbon slag. It is dense, solid and reliable, light in weight, and has no potential security risks in bearing.
16, stone or tile baseboard according to customer requirements can be flush with the wall facade, so that the construction is not dust, easy to clean and sanitary, good display furniture.
The common quality problems and treatment methods for ground floor tiles are common defects in floor tiles, such as empty drums and flatness.
1. Empty drum: The main reason is that the adhesive layer is thin, the cement slurry is dry when it is laid, the back surface of the sheet is not removed, and the person walks or presses heavily during the curing period. In the construction, the adhesive layer mortar should be dry, and the floor spread should prevail. The water-cement ratio of cement slurry is 1:2 (volume ratio) when paving, and it is forbidden to use cement flour for laying. During the conservation period, shelves should be erected and walking on the surface is prohibited. If empty drums occur, the rework should be reworked by removing empty drum tiles, sucking them with suction cups, lifting them flat and then laying them out in accordance with the specifications.
2. Large deviation in flatness: In addition to improper construction operations and the fact that the board surface is not flat, the main cause is the warpage of the board. In the construction should be strictly material selection, remove the warping of serious unqualified products, uneven thickness, can be leveling the mortar in the board, for large local deviation, can be used to hit the marble machine smooth, and then polished. If there is no flat plate, remove it.
Acceptance Criteria:
1, the surface is clean, consistent lines, no scratches, no color, no cracks, no pollution, lack of corners and other phenomena.
2. The gap between the edge of the floor tile and the wall is suitable, and the skirting board can completely cover the gap with the same width and straight mouth.
3. The leveling of floor tiles shall be checked with a 2M level ruler, the error shall not exceed 2mm, and the height difference between adjacent tiles shall not exceed 1mm.
4, the tiles must be firmly bonded, hollowing control in the total of 5%, empty area of ​​a single piece does not exceed 10% (the main channel must not have empty drums).
5, floor tiles seam width 1mm, not more than 2mm, jointing evenly, straight.
6, the horizontal error does not exceed 3mm.
7, the floor of the kitchen, toilet should not be higher than the indoor walkway or hall floor; preferably 10-20mm lower than the indoor floor.
8. The slope of floor tiles with drainage requirements shall meet the drainage requirements. Floor drains with floor drains should be directed toward floor drains, and should be tightly connected with floor drains.