Wall, floor waterproof construction process: wall, ground floor treatment → brush cement slurry → wipe the bottom mortar → brush cement slurry → wipe surface mortar → brush cement mortar → curing.
1, grassroots processing
(1) Concrete walls with honeycomb and loose concrete should be removed, rinsed with water, then smoothed with 1:3 cement mortar or tamped with 1:2 cement mortar. The surface oil is scrubbed with a 10% aqueous solution of caustic soda and the surface of the concrete should be cut.
(2) When wiping the waterproof layer on a brick wall, it must be slit when laying bricks, and the depth is 10-12mm. Through the wall embedded pipe exposed base, cut into a 20 ~ 30mm wide, 50 ~ 60mm deep groove, with 1:2 dry hard cement mortar tamping. Pipe through the wall should be designed to do a good job of waterproofing, and apply for hidden inspection procedures.
2, the concrete wall wipe cement mortar waterproof layer
(1) Brush cement paste: mix ratio: cement: water: waterproof oil = 1:0.8:0.025 (weight ratio), mix the cement and water first, then add waterproof oil, mix well, and then use soft brush The base surface is painted evenly, and the underlying waterproof mortar is then wiped.
(2) For the bottom mortar, use 1:2.5 cement mortar and add 3% to 5% of waterproof powder to the cement. The water-cement ratio is 0.6 to 0.65, and the consistency is 7 to 8cm. Mix the waterproof powder, cement, and sand first and then mix with water. After the mixing, the plastering operation is performed. The thickness of the bottom plaster is 5 to 10 mm, and the broom is used to sweep the hair before the ash is solidified. The mortar should be used with the mix. The time for mixing and using mortar should not exceed 60min, and overnight mortar is strictly prohibited.
(3) Brush cement slurry: After the bottom ash is wiped, the cement slurry is brushed at room temperature for 1 day, and the mixing ratio and practice are the same as those for the first layer.
(4) Plastering the mortar: After brushing the pulp, the surface layer is immediately followed by the mortar. The thickness of the plaster is approximately 5 to 10mm. Before the solidification, the wooden trowel must be used to flatten the surface. Press with an iron trowel. Light.
(5) Brush cement slurry: After the surface layer is wiped, the cement slurry is brushed for 1d. The mixing ratio is cement:water:waterproof oil = 1:1:0.03 (weight ratio). The method is the same as the first layer.
3, brick wall wipe cement mortar waterproof layer
(1) Grassroots watering and wetting: The brick wall is thoroughly drenched with a water pipe the day before plastering, and the brick wall is then sprinkled with water to wet the next day.
(2) Wipe the bottom mortar: mix ratio is cement: sand = 1:2.5, add 3% of the cement weight of the waterproof powder. First, scrape a thin layer with an iron trowel, and then use a wooden trowel to apply the ash to the surface and smooth it. Plaster thickness of about 6 ~ 10mm.
(3) Wipe the cement slurry: 1 ~ 2d after the bottom layer is wiped, wet the surface with water, then wipe the cement waterproof slurry, and mix the cement with 3% waterproof powder. First mix the cement with the waterproof powder, then add the appropriate amount of water and mix it evenly. Wipe it thinly with an iron trowel, and the thickness is about 1mm. (4) Plastering the mortar: After wiping cement paste, apply the mortar with the same proportion as that of the bottom layer. Use a wooden trowel to flatten it, and then compact and calender it with an iron trowel. Plaster thickness between 6 ~ 8mm.
(5) Brush cement paste: After plastering the surface for 1d, brush the cement paste, the mixture ratio is cement:water:waterproof oil = 1:1:0.03 (by weight). The method is to mix the cement and water firstly. Add water-repellent oil and stir evenly. Brush the surface evenly with a soft-bristled brush.
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