What are the indoor waterproof construction practices?

Re-inspection of waterproof materials-technical disclosure-cleaning base-adhesive layer-additional layer of details-waterproof layer-water test.

Second, the waterproof concrete construction

(1), waterproof concrete must be mixed accurately according to the mixture ratio. When the mixture is separated, it must be used after secondary stirring. When slump loss can't meet the construction requirements, cement slurry with original water-binder ratio should be added or water reducer should be added twice for mixing, and it is forbidden to add water directly.

(2) Waterproof concrete should be compacted by high-frequency mechanical vibrating in layers, and the appropriate vibrating time is 10? 30 seconds. When using self-compacting concrete, no mechanical vibration is needed.

(3) Waterproof concrete shall be poured continuously without construction joints. When the construction joint is left, it should be left in a place with small shear and convenient construction. The horizontal construction joint of the wall should be left on the wall not less than 300mm from the floor surface.

(4) Waterproof concrete shall be cured immediately after final setting, and the curing time shall not be less than 14d.

(5) When waterproof concrete is constructed in winter, its mold-entering temperature should not be lower than 5℃.

Three, waterproof cement mortar construction

1, base surface should be smooth, solid, clean, and should be fully wet, no water.

2, waterproof mortar plastering method should be adopted for construction, every time to survive. Each layer should be closely combined, and each layer should be constructed continuously. When there must be a gap, the upper and lower levels should be staggered by more than 100mm, and there should be no gap within 200mm from the corner.

3, waterproof mortar construction environment temperature should not be lower than 5℃. After final setting, it shall be cured in time, the curing temperature shall not be lower than 5℃, and the curing time shall not be less than 14d.

4. When the polymer cement waterproof mortar has not reached the hardened state, it shall not be watered for curing or directly washed with water. After hardening, dry and wet alternate curing method should be adopted. In humid environment, it can be cured under natural conditions.

Four, coating waterproof layer construction

1, the base shall be smooth and firm, and the surface shall be free from defects such as holes, honeycomb pits and cracks; The surface of the base must be clean and free of laitance, and the dryness of the base should meet the product requirements.

2. Construction environment temperature: The suitable temperature of latex paint is 5? 35℃。

3. During coating construction, the angle of yin and yang, embedded parts and wall (building) pipelines should be reinforced or sealed first.

4, coating waterproof layer should be survival for many times, after a coating construction should be carried out after the previous coating. Before and after two times of brushing direction should be perpendicular to each other, brush the facade first, then brush the plane.

5, when the shop is stuck, matrix reinforcement materials should be fully saturated with waterproof coating, there is no exposure and fold. The long-side overlap of matrix material shall not be less than 500mm, and the short-side overlap width shall not be less than 700mm.

6, waterproof layer construction after acceptance, should do protective layer in time.

Five, coiled material waterproof layer construction

1, the base shall be smooth and firm, and the surface shall be free from defects such as holes, honeycomb pits and cracks; The surface of the base must be clean and free of laitance, and the dryness of the base should meet the product requirements. The base with cement-based adhesive should be fully wetted first, but there should be no Mingshui.

2. The ambient temperature of coil paving construction: not less than 5℃ for cold bonding construction and not less than-10℃ for hot melting construction. Below the specified requirements, technical measures should be taken:

3. The waterproof coiled material constructed by sticking method should be laid by full sticking method at the grass-roots level.

4, the minimum lap width of all kinds of coil should meet the requirements.

5, coil seam must be closely pasted. Joints should be sealed, the sealing width should not be less than 10mm, and the overlapping position should be more than 300mm away from the angle of Yin and Yang.

6, waterproof coiled material construction should be paved facade, after the shop plane. After the waterproof layer construction is completed and qualified, other levels of construction can be carried out.