Product Details
Product Details
Product Description:
KG polymer pre-paved anti-adhesive waterproofing membrane (self-adhesive film) is a kind of multi-layer composite waterproofing membrane specially developed for underground engineering and tunnel engineering, which can form a firm anti-adhesive with concrete structure pre-paved. The coiled material is made of resin polymer sheet (HDPE) as the main waterproof material, the polymer waterproof sheet is covered with a self-adhesive material layer, and the isolation film or the sand layer with special performance requirements is made as the isolation layer.
The principle of pre-paving and anti-sticking is: before the initial setting of the post-pouring concrete structure, the concrete will produce cross-linking and meshing reaction with the self-adhesive layer of the coiled material under the action of gravity, and the physical adsorption and tenon effect will be produced during the cement curing process, so that the coiled material and the post-pouring concrete will be firmly bonded together and not easily separated, forming a gap-free combination between the waterproof layer and the concrete structure, it can solve the problem of water channeling caused by the non-bonding between the traditional waterproofing membrane and the structural concrete, eliminate the hidden danger of water channeling, and effectively provide the reliability of the waterproofing system.
The pre-laying and anti-sticking method is as follows: the self-adhesive film layer (surface particle protective layer) of KG polymer pre-laying and anti-sticking waterproof coiled material (self-adhesive film) is laid on the base surface facing the structural layer, and then the structural concrete is poured to closely combine the concrete slurry with the coiled material layer. After the concrete solidifies, the coiled material and the structural concrete surface produce strong adhesion.
Product features:
1. Excellent comprehensive performance.
2. Pre-paving anti-sticking technology and wet bonding technology; convenient construction, cost saving and shortening construction period.
3. Excellent impact resistance and puncture resistance.
4. Strong chemical resistance. HDPE anti-seawater corrosion (seawater immersion, resistance to chloride ion penetration, salt and alkali resistance).
Scope of application:
Municipal: underground pipe gallery, subway station, subway tunnel.
Highway: Highway tunnel.
High-speed rail: high-speed rail section tunnel.
Industrial and civil construction: underground floor and waterproofing works on side walls with external and internal protection.
Main technical indicators:
GB/T 23457-2017 Class P
| Test Items | Technical indicators |
| Tensile force/(N/50mm) | ≥600 |
| Tensile strength/Mpa | ≥ 16 |
| Elongation at break of film/% | ≥ 400 |
| Low temperature bending | Body material -35 ℃, no crack |
| Low temperature flexibility | Adhesive layer -25 ℃, no crack |
| Heat resistance | 80 ℃,2h without slippage, flowing and dripping |
| impervious to water | 0.3Mpa,120min impervious |
| Oily permeability/sheet | ≤1 |
Note:
1. When welding steel bars on the coil, protect the coil to avoid damage to the coil due to welding or puncture.
2. During the construction of large-area waterproofing membrane, the lap width of the membrane shall not be less than 80mm.
3. The short side joints of two adjacent rows of coils should be staggered by more than 300mm to avoid uneven bonding of coils caused by overlapping of multi-layer joints.
4. When laying the wet base surface, the base surface should be flat and firm, without open water.
5. The long side of the coil shall be overlapped by self-adhesive edge, the short side shall be overlapped by special double-sided overlapping tape, and the overlapping areas at the ends of the coil shall be staggered.
6. During the construction of the facade, the mechanical fixing shall be carried out every 400-600mm within 10-20mm from the edge of the coil at the position of the self-adhesive edge, and the fixed position shall be completely covered by the coil.
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