A waterproof sheet is a material made of a渗膜 with a thickness exceeding 0.80 millimeters. It is a waterproofing material produced primarily from high molecular weight polymers such as low-density polyethylene (LDPE), ethylene/vinyl acetate copolymer (EVA), polyvinyl chloride (PVC), ethylene-vinyl acetate modified asphalt (ECB), and others.
Product Performance: Excellent moisture resistance; high barrier properties; high puncture resistance; free of chemical contamination; resistant to acids, alkalis and various chemicals; good elongation and wear resistance; good dimensional stability; good adhesion; easy to install.
Application Range: Seepage prevention for projects such as earth and rock embankments, stone masonry embankments, concrete dams, tailings dams, wastewater reservoir embankments, canals, and liquid storage pools; seepage-proof lining for subways, basements, and tunnels; seepage prevention for highway and railway foundations; used in conjunction with geotextiles like long-fiber geotextiles and bentonite waterproof membranes in sanitary landfill sites.
ECB/EVA Waterproof Roll Materials Technical Specifications
Serial Number | Item | Index | ||
EVA | ECB | |||
1 | Ultimate Tensile Strength / MPa ≥ | 18 | 17 | |
2 | Break elongation (%) ≥ | 650 | 600 | |
3 | Tear Strength/KN/m ≥ | 100 | 95 | |
4 | Waterproofness/0.3MPa/24h | No leakage | No leakage | |
5 | Low Temperature Bendability/°C ≤ | -35 | -35 | |
6 | Heating elongation, mm | Extended ≤ | 2 | 2 |
Contraction ≤ | 6 | 6 | ||
7 | Hot Air Aging (80℃ × 168h) | Ultimate Tensile Strength / MPa ≥ | 16 | 14 |
Tensile elongation % ≥ | 600 | 550 | ||
8 | Alkaline resistance [saturated Ca(OH)2 solution × 168h] | Tensile Strength at Break / MPa ≥ | 17 | 16 |
Break elongation % ≥ | 600 | 600 | ||
9 | Artificial侯化 | Tensile Strength Retention Rate/% ≥ | 80 | 80 |
Break elongation retention rate/% ≥ | 70 | 70 | ||
10 | Puncture Strength/N | 1.5mm ≥ | 300 | 300 |
EVA Waterproof Membrane Technical Specifications GB18173.1-2006
Serial Number | Project | Index | ||
1 | Ultimate Tensile Strength / MPa | Room Temperature ≥ | 16 | |
60℃ ≥ | 6 | |||
2 | Tensile elongation / % | Room Temperature ≥ | 550 | |
-20℃ ≥ | 350 | |||
3 | Tear Strength/KN/m ≥ | 60 | ||
4 | Waterproofness (30 min) | 0.3 MPa, no leakage | ||
5 | Low-temperature bendability/℃ ≤ | -35 | ||
6 | Heating elongation, mm | Extended ≤ | 2 | |
Contraction ≤ | 6 | |||
7 | Hot Air Aging (80℃ × 168h) | Breakage Tensile Strength Retention Rate/% ≥ | 80 | |
Break elongation retention rate/% ≥ | 70 | |||
8 | Alkaline resistance [saturated Ca(OH)2 solution × 168h] | Tensile Strength Retention Rate/% ≥ | 80 | |
Break elongation retention rate/% ≥ | 90 | |||
9 | Artificial侯化 | Tensile Strength Retention/% ≥ | 80 | |
Tensile elongation retention rate/% ≥ | 70 | |||
10 | Adhesive Peel Strength | N/mm² (Standard Test Conditions) ≥ | 1.5 | |
Moisture Retention Rate (Room Temperature * 168h) / % ≥ | 70 | |||
Note: 1. Artificial climate aging and adhesive property items are recommended; 2. For non-exposed use, it is not necessary to test for artificial climate aging, thermal expansion, and 60℃ tensile strength at break. | ||||
PVC Waterproof Membrane Technical Specifications GB12953-2003
Serial Number | Project | Type I | Type II | |
1 | Tensile Strength/MPa ≥ | 8.0 | 12.0 | |
2 | Tensile elongation at break / % ≥ | 200 | 250 | |
3 | Heat Treatment Dimensional Change Rate/% ≤ | 3.0 | 2.0 | |
4 | Low-temperature bendability | -20°C No Cracks | -25°C No Cracks | |
5 | Perforation resistance | Waterproof | ||
6 | Waterproof | Waterproof | ||
7 | Adhesiveness under Shearing Condition / (N/mm) ≥ | 3.0 or coil damage | ||
8 | Heat aging treatment | Appearance | No bubbling, cracking, bonding, or holes | |
Tensile strength change rate / % | ±25 | ±20 | ||
Percentage Change in Tensile Elongation/% | ||||
Low-temperature bendability | -15°C, crack-free | -20°C, no cracks | ||
9 | Chemical-resistant | Tensile strength change rate / % | ±25 | ±20 |
Rate of change of elongation at break/% | ||||
Low-temperature bendability | -15℃ No Cracks | -20°C, no cracks | ||
10 | Artificial climate accelerated aging | Tensile strength change rate / % | ±25 | ±20 |
Rate of change in elongation at break/% | ||||
Low-temperature bendability | -15℃ No Cracks | -20°C, No Cracks | ||
Note: The artificial climate accelerated aging performance does not need to be evaluated for non-exposed use. | ||||
