★ Preparation of construction equipment
1) Cleaning tools for grassroots: shovel, chisel, hammer, wire brush, broom, cloth;
2) Weighing and batching tools: water bucket, scale, mixer;
3) Tools for applying paint: scraper, brush, roller bucket.
★ Grassroots treatment
The grassroots must be leveled, compacted, and polished; The surface must be firm, clean, free of visible water and leakage; The corners of yin and yang should be made into rounded corners.
★ Ingredients
According to the construction operation requirements, if it is inconvenient to carry out construction, an appropriate amount of water can be added. The method of adding water is to first add water to the material, and then slowly add the powder while stirring with a mixer. Stir thoroughly until there are no lumps in the material (stirring time is not less than 5 minutes). The weight ratio of the base coating is liquid: powder: water=10:15:10. After the base coating is completed and dried, apply the waterproof layer with a weight ratio of liquid: powder: water=10:12: appropriate amount; The amount of water added should be within the specified range, and construction should be carried out on slopes, tops, or facades. In order to hold enough material, no or less water should be added; The flat surface of the coating can be coated with more water appropriately.
Coating
Use a roller and scraper to apply the coating layer by layer in the order of bottom layer, middle layer, and surface layer. The time interval between each layer should be based on the previous layer of coating film being dry and not sticky to the hand, ensuring that the required thickness is achieved. Attention should be paid to the following matters when coating:
1) If there is precipitation in the liquid material, it should be stirred evenly at any time;
2) The coating should be as uniform as possible, without local deposition, too thick or too thin, and there should be no bubbles left between the coating and the base layer, with a tight bond;
3) Each layer of coating must be taken according to the specified amount of material;
4) Each layer of coating should be applied in a vertical direction.
★ Cleaning
During construction intervals or at the end of construction, all tools and work clothes with paint should be cleaned with clean water as soon as possible. Otherwise, it will be difficult to clean after the paint dries up.
★ Construction of protective layer
After the waterproof layer is completed and cured, immediately apply a 2-4cm cement mortar leveling layer as a protective layer.
★ Quality requirements
After the completion of the waterproof layer construction, all parts of the entire project, especially the weak links, should be carefully inspected. If any problems are found, they should be repaired in a timely manner. The coating should not have cracks, curled edges, bubbles, delamination, or other phenomena.
★ Precautions
1) Detail coating:
Yin and Yang corners, corners, through wall pipes, etc. are all weak links in waterproofing. Before the large-scale waterproofing construction, glass mesh cloth should be used to strengthen the details.
2) Construction conditions:
This material is not suitable for construction in rain, and should not be used in particularly humid and poorly ventilated environments, as it may affect the waterproof effect.
3) Material storage:
Liquid materials should be stored in a cool place above 5 ℃, and powders should be stored in a dry place to avoid moisture.
4) Product protection:
After the construction is completed, it is not allowed to drill holes on the waterproof layer. Product protection should be done well to avoid damaging the waterproof layer.
2. Non construction site operators are strictly prohibited from entering the construction site to avoid affecting the construction.
3. Construction operators are not allowed to enter the site wearing shoes with nails or high heels to avoid damaging the already prepared waterproof layer; The waterproof layer is not dry yet, and personnel are strictly prohibited from stepping on it on the work surface.
★ Quality assurance measures
1) Strictly follow relevant standards for construction.
2) Before the materials enter the site, they must have a complete set of relevant quality assurance documents. All materials must arrive at the construction site, and the supervising company and the owner unit must be invited to conduct on-site inspections in a timely manner. Only after passing the inspection can they be used.
3) Strictly follow the construction process for construction. After the completion of the project, the company will conduct self inspection first, and then report to the supervisor, owner unit, and main construction unit for joint acceptance, and keep records.