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This product is a polymer waterproofing membrane manufactured through a special process that laminates cross-laminated, high-strength film with a reactive self-adhesive.
Polymer membrane-based waterproofing membranes are classified into high-strength (H-class) and high-elongation (E-class) types; the polymer membrane may be located on the surface or in the middle of the membrane. Products are classified by adhesive surface as single-sided adhesive (S) and double-sided adhesive (D).
Thickness: 1.5 mm, 2.0 mm; Width: 1000 mm; Nominal area: 15 m², 20 m². (Other specifications may be agreed upon by the supplier and the buyer.)
Class H – High-strength; Class E – High-elongation; S – Single-sided adhesion; D – Double-sided adhesion.
Example: 20 m², 1.5 mm, high-elongation type, double-sided adhesive cross-laminated film, reaction-bonded polymer waterproofing membrane is labeled as:
Wet-Lay Waterproofing Membrane GB/T 35467-2017-E D 1.5-20
The substrate must be level and firm; remove any protrusions from the substrate. If the substrate is dry, thoroughly wet it until it is saturated; construction may begin once there is no standing water.
Mix thoroughly in the mixing bucket using an electric mixer, maintaining a cement-to-water ratio of 1:0.3–0.5 by weight. When preparing the mixture, first pour the water into the bucket, then add the cement. Let it soak for 10–15 minutes, pour off the excess water that has risen to the surface, and then begin mixing. The resulting cement slurry must be uniform, free of sediment, and free of lumps.
Roll the sheet from both ends toward the center. When you reach the halfway point of the roll, use a utility knife to gently score the release liner from the center, taking care not to cut through the sheet. After positioning half of the roll, grasp the end of the peeled-back release film and pull it back evenly with consistent force, unrolling and applying the material as you go. As you apply it, be sure to roll it down firmly and remove any air pockets. The roll must be laid tightly and adhere securely to the substrate. Use a roller to press down firmly on the overlaps.
Suitable for waterproofing, moisture-proofing, and seepage-proofing projects on basement floor slabs, side walls, ceiling slabs, and non-exposed roofs of buildings. Particularly suitable for projects where open flames are prohibited.
For more than three layers, store vertically in a single layer only. Prevent tilting or lateral pressure during transport; cover with canvas if necessary. Under normal storage and transport conditions, the shelf life is one year from the date of manufacture.
Applicable standard: GB/T 35467-2017 "Wet-laid Waterproofing Membranes."
| No. | Project | Indicators | |||
| H | E | ||||
|
1 |
Tensile Properties |
Tensile Strength/(N/50 mm) ≥ | 300 | 200 | |
| Elongation at maximum tensile force / % ≥ | 50 | 180 | |||
| Phenomena Observed During Tensile Testing | No separation between the adhesive layer and the polymer film substrate | ||||
| 2 | Tensile Strength/N ≥ | 20 | 25 | ||
| 3 | Heat Resistance (70°C, 2 hours) | No running or dripping; slippage ≤ 2 mm | |||
| 4 | Low-Temperature Flexibility (-20°C) | No cracks | |||
| 5 | Water Impermeability (0.3 MPa, 120 min) | Waterproof | |||
|
6 |
Sheet-to-sheet peel strength (lap joint) / (N/mm) ≥ | No processing | 1.0 | ||
| Soaking Treatment | 0.8 | ||||
| Heat Treatment | 0.8 | ||||
| 7 | Oil permeability/number of sheets ≤ | 2 | |||
| 8 | Viscosity/min ≥ | 30 | |||
|
9 |
Bond Strength with Cement Mortar (N/mm) ≥ | No processing | 1.5 | ||
| Heat Treatment | 1.0 | ||||
| 10 | Adhesion strength to cement mortar after water immersion (N/mm) ≥ | 1.5 | |||
