Basement waterproofing and moisture-proofing must be done separately!
Waterproofing is to prevent flowing open water, and moisture-proofing is to prevent water molecules in the underground soil layer from penetrating into indoor moisture through the capillary pores of the concrete structure. Basement waterproofing is waterproofing, and moisture-proofing is moisture-proofing. To completely solve the leakage and moisture in the basement. must be both moisture-proof and waterproof!
1. Basement moisture-proof method:
At present, the more effective solution in the world is the electro-penetration moisture-proof technology invented by Norway's Triton. By installing a positive electrode on the wall and a negative electrode on the soil outside the basement, an electroosmotic pulse charge is applied to move the water molecules in the positive electrode toward the negative electrode, allowing the wall to reach the standard dryness value. It has been used abroad for 35 years before it can be verified to be effective.
2. Basement waterproofing method:
Basement double-layer membrane waterproofing method and detail node method
Since the 100 mm thick C15 concrete cushion is a non-structural system, and the waterproof layer is a flexible material, between the reinforced concrete structure bottom plates Weak mezzanine, so 100 The thick concrete cushion will inevitably crack under the overall structural load. If the waterproof layer is tightly bonded to the cushion, it will easily suffer "crack reflection" damage. Therefore, the technical specifications for underground engineering waterproofing clearly stipulate that flexible waterproofing membranes are installed on the bottom plate. Some parts should use the " empty laying method or point and stick method" .
1. Base board waterproofing method
Set additional layers of membrane at the corners and at the intersections and turning points of the flat and vertical surfaces. Brush oil and fully glue between the base plate membrane and the brick protective wall. membrane is placed on the temporary protective wall. When sticky Fixing, see the figure below for details:
2. How to connect the side wall
The closing part of the membrane is temporarily fixed with bricks. The temporary protection will be removed during the construction of the vertical wall. The width of the connection with the base plate membrane shall not be less than 150mm, it is recommended to use flexible protection for vertical wall membranes.
3. How to do the post-pouring tape
Add a roll of the same material as the large surface at the post-pouring tape position as an additional reinforcement layer. The width of the additional layer is greater than or equal to 500mm, as shown in the following diagram:
4. Elevator shaft /sump pit waterproofing method
Set a roll of the same material as the large surface at the turning point of the yin and yang angle of the elevator shaft and sump pit as an additional reinforcing layer. The width of the additional layer is greater than or equal to 500mm, as shown in the following diagram:
5. Exterior wall closing method
The closing of the exterior wall facade membrane is fixed with fixed battens, nailed, and sealed with asphalt-based sealant. On the premise of ensuring the safety performance of the waterproof system, the extension The safe longevity of the waterproofing system helps. This project recommends that the side wall closing is 500mm above the outdoor floor, and the flexible waterproof layer ends, as shown in the figure below:
Summary: The solution for basement waterproofing and moisture-proofing is , basement moisture-proofing and waterproofing = concrete pouring method + waterproof material layer ; Basement structure moisture-proof = electro-penetration technology actively prevents moisture!
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