(1) Base layer cleaning
1) Brick masonry: Surface debris, residual mortar, tongue ash, dust, etc. should be removed.
2) Concrete matrix: Chisele the surface or spray 1:1 cement mortar on the surface after moistening it (add an appropriate amount of adhesive or interface
surface agent)
< p>3) Air-entrained concrete matrix: The interface agent should be applied after it is wet, and cement mixed mortar with a strength not greater than M5 should be applied at the same time.(2) Water and moisten
Generally the day before plastering, use a hose, rubber tube or watering can to water the wall from top to bottom to moisten it. It is advisable to water twice a day. .
(3) Hang vertically, set squares, find rules, and make gray cakes
According to the plastering quality required by the design drawings and the flatness and verticality of the base surface, use one wall as the benchmark , hang it vertically, set it squarely, find the rules, and determine the thickness of the plaster. The thickness of the plaster should not be less than 7mm. When the wall has a large concavity, it should be lined in layers.
The thickness of each layer shall not be greater than 7~9mm. During operation, the ash cake should be applied first and then the ash cake should be wiped off. When plastering the cake, you should determine the correct position of the cake according to the indoor plastering requirements, and then use the ruler board to find it vertical and flat. The gray cake should be plastered with 1:3 cement mortar
into a 5cm square shape.
When the room is large, you should first pop up the cross center line on the ground, then pop up the corner line according to the flatness of the base layer, and then hang the vertical line 100mm away from the inner corner of the wall and
Pop up the plumb line, then press the pop-up corner line on the ground to the wall to pop up the wall plaster layer thickness control lines on the two inner corners
to make a gray cake, and then according to the gray The cake is full of gluten.
(4) Apply cement skirting (or dado)
Fill the ribs according to the plastered gray cake (the ribs can be made wider, 8 to 10cm is appropriate, so The ribs are the basis for plastering the skirting or wall
skirts, and are also used as the basis for plastering the wall). Apply 1:3 cement mortar on the bottom layer. After plastering, use a large bar to smooth it.
The wood should be wiped and rubbed, and the surface layer should be plastered with 1:2.5 cement mortar the next day at room temperature and calendered. The thickness of the skirting or dado should meet the design requirements
. If there is no design requirement, it will protrude. The wall thickness is 5~7mm. Any skirting or dado top that protrudes from the plastered wall must be smooth and straight. After the skirting or wall is plastered, stick a ruler on the large surface to be level with the top, and then use a small Use a trowel to smooth and smooth the upper edge.
The edges protruding from the wall should be made into obtuse angles, and no stubble or flying edges should appear.
(5) Make corner protectors
The sun corners between walls and columns should be protected with 1:2 cement mortar before plastering the walls and columns. The height should be from the ground. 2m above.
See Figure 1.1.6.2 for details on how to do it, and then water the sunny corners of the walls and columns to moisten them. The first step is to erect the eight-shaped ruler on the front of the sun corner. The ruler should protrude from the side of the sun corner, and the thickness of the protrusion should be equal to the plastering surface. Then on the side of the sun corner, apply cement mortar against the edge of the ruler
and smooth it with an iron trowel. Remove the excess cement mortar according to the width of the corner guard (not less than 5cm).
The second step is to wait until the cement mortar is slightly dry, then move the splayed ruler to the plastered corner protector (the splayed slope faces outward). On the front side of the sun corner, apply cement mortar on the edge of the ruler and smooth it with an iron trowel. Remove the excess cement mortar according to the width of the corner guard.
After wiping, remove the splayed ruler, paint the sharp corners of the corner protector with plain cement slurry, and use a corner squeegee to stroke it from top to bottom to form an obtuse angle.
(6) Plaster the cement window sill
First clean the base of the window sill and re-pare the loose bricks. Score the brick joints deeply, moisten them with water, and then pave them with 1:2:3 pisolite concrete. The thickness should be greater than 2.5cm. Apply adhesive plain cement once the next day, and then apply 1:2.5 Cement sand
Surface layer, after the surface reaches initial setting, water and cure for 2 to 3 days. The plastering on the lower opening of the window sill plate should be straight and without burrs.
(7) Filling the wall with ribs
When the ash cake mortar reaches 7/6 dry, the same mortar as the plaster layer can be used to fill the ribs. The number of ribs should be based on the room. The width and height are determined. Generally, the standard rib width is 5cm. The distance between two ribs shall not be greater than 1.5m. When the wall height is less than 3.5m
it is advisable to make vertical reinforcements. When it is larger than 3.5m, it is appropriate to make transverse reinforcements. When making transverse punching reinforcements, the spacing between gray cakes should not be greater than 2m.
(8) Apply primer
Under normal circumstances, it is appropriate to start applying primer about 2 hours after the rib filling is completed. Before applying, a thin layer of dust should be applied first. It is required to apply the base
Strictly, when plastering, press hard to squeeze the mortar into the small gaps, then install the files in layers, plaster and fill the ribs, use a wooden pole to scrape and level
Smooth, use a wooden stick to level the mortar. Rub the hair with a trowel. Then comprehensively check whether the base ash is flat, whether the inner and outer corners are straight and clean, whether the intersection between the pipe and the inner corner and the top plate of the wall are smooth, flat and straight, and use a support board to check that the wall is vertical with flat conditions.
The plastering on the wall behind the radiator should be carried out before the radiator is installed. The plastering surface should be connected smoothly, and the floor skirting board or wall skirt
and the back of the pipe should be cleaned in time. , to live a clean life.
(9) Repair the reserved holes, distribution boxes, slots, and boxes
After the base dust is smoothed, a designated person must immediately remove the reserved holes, distribution boxes, and boxes. Scrape off the 5cm wide lime sand around the trough and box,
and clean it. Use a large brush dipped in water to brush along the perimeter to moisten it. Then use 1:1:4 cement mixed mortar to seal the hole, box, and
The edges of the groove and box should be pressed flat and smooth.
(10) Apply the top dust
You should start applying the top dust when the bottom dust is 60 to 70% thick (when applying, if the bottom dust is too dry, water should be moistened). The thickness of the surface is about 2mm after two passes of dust. It is best for two people to cooperate at the same time during the operation. One person will scrape the thin dust first, and the other will smooth it out immediately. Follow the order of
first up and then down, and then press the light quickly. The heat should be controlled when pressing, so that there should be no water marks and no pressing.
After pressing, immediately Use a brush dipped in water to clean the dust-contaminated areas on the cover. During construction, it is not advisable to throw down the entire wall. If there are pre-construction holes, it is better to throw down the entire wall.