What is dry paving?
Dry paving means that the volume of cement and sand is adjusted in proportion to form a dry and hard cement mortar, which is used as a bonding layer to lay floor tiles and stone.
What is the difference between dry laying and wet laying?
Wet paving refers to the proportion of the volume of cement and sand mixed into wet and soft cement mortar, which is suitable for relatively simple ground paving such as mosaics, small glazed tiles, ceramics and broken stone.
Generally speaking, the ground after dry laying is not easy to be deformed, not easy to hollow, and the lines and edges are flush. There is a lot of water in wet-laid mortar, and bubbles are easily formed during the evaporation of water during the solidification process. If it is a large stone, it is easy to hollow out, so it is more suitable for bathrooms and other areas where the stone specifications are small and need to be waterproofed.
Floor stone dry laying rules
Base layer treatment: For the ground in the area where the stone is laid, clean the base layer and sprinkle water for wet treatment, sweep the plain cement slurry again and then measure and set out the line. Measure and lay out: According to the horizontal standard line and the design thickness, the finished surface line will pop up on the surrounding walls and columns, and the control cross lines that are perpendicular to each other will pop up in the main parts.
Trial spelling and trial arrangement: Trial spelling of the stone blocks according to the label, check whether the color, texture, and size of the stone conform to each other, then stack them neatly according to the number, and arrange the stone blocks according to the requirements of the drawings, so as to check the gaps between the blocks and check the blocks. Relative position to walls, columns, openings, etc.
1:3 dry-hard cement mortar: According to the horizontal line, determine the thickness of the ground leveling layer for ash cake positioning, pull the cross line, and lay the leveling layer cement mortar. The leveling layer generally adopts 1:3 dry-hard cement mortar. The degree of dryness is determined by hand. It is advisable to knead it into a ball so that it will not be loose; after laying it, scrape a large bar, pat it firmly, and level it with a trowel, and its thickness is appropriately higher than the thickness of the leveling layer determined according to the horizontal line.
Special adhesive for stone paving: use a thin layer of adhesive with strong cohesive force and anti-dropping force, with a small and uniform amount, to firmly adhere the stone to the base, avoid falling off, and achieve acid resistance and anti-dropping. Alkali, impermeability and anti-aging, to avoid problems such as hollow stone falling off and pan-alkali.
Crystal surface maintenance: choose a crystal surface treatment machine with sufficient weight, clean the stone surface before treatment, spray the crystal surface treatment agent evenly on the stone surface, and use the crystal surface treatment machine to repeatedly apply the crystal surface treatment agent to the ground evenly. Until the treatment agent is dry and reflective; use the polisher to repeatedly brighten and polish to make the floor more glossy and beautiful.
Stone mirror treatment: After cleaning the stone surface, spray a small amount of mirror water on the marble, polish it with steel wool, and then spray it with mirror water repeatedly after drying. Then use a grinding disc to grind off a layer of marble from small to large, smooth it, and then repeat the spray polishing.
Dry lay quality standard
Main control project:
1. The variety, specification, color and performance of the slabs used for the stone surface layer should meet the design requirements and the current relevant national standards.
2. When the stone material enters the construction site, there should be a qualified inspection report of radioactive limit.
3. The surface layer and the next layer are firmly combined, and there is no empty drum.
1. Before the stone surface layer is laid, the back and sides of the slab should be treated with alkali proofing.
2. The surface of the stone surface is clean, the pattern is clear, and the color is consistent; the seams are flat, the depth is consistent, and the periphery is straight; the plate has no defects such as cracks, missing corrugations, and falling corners.
3. The slope of the surface layer should meet the design requirements, and there should be no backflow or stagnant water; the joint with the floor drain and pipeline should be tight and firm without leakage.
Attention and protection
Six-sided protection: The six-sided protection of the stone must be repeated vertically and horizontally. The first protection is dry and then the second time is brushed.
Removing the back mesh cloth: For stone paving, the back mesh cloth should be removed and the stone protective agent should be reapplied, and the paving should be carried out after drying.
Transportation and handling: Stones must be packed into boxes and take measures to prevent collision and damage; it is strictly forbidden to touch the sharp corners of the stone to the ground during transportation, and it is strictly forbidden to touch the smooth side to avoid bumping and damaging the sharp corners and the smooth edges.
Stone storage: Stone blocks should not be stored in rain, blisters and long-term exposure. Usually, they are stored vertically, with a smooth surface facing each other. The bottom of the board should be supported by wooden pads.