详细内容：
I. Product Specifications
The mass per unit area is ≥4000g/㎡, and the width is 4-6m.
Ii. Performance Characteristics
Compared with compacted clay liners, it has the advantages of small volume, light weight, good flexibility, good density performance, high shear strength, simple construction, and adaptability to uneven settlement.
The mineralogical name of bentonite is montmorillonite. Natural bentonite is mainly classified into two categories based on chemical composition: sodium-based and calcium-based. Bentonite has the property of swelling upon contact with water. Generally, when calcium-based bentonite swells, its expansion is only about three times its own volume. However, when sodium-based bentonite comes into contact with water, it adsorbs five times its own weight of water and expands to more than 15 to 17 times its original volume. Locking sodium-based bentonite between two layers of geosynthetic materials plays a protective and reinforcing role. Make GCL have a certain overall shear strength.
Iii. Product Function
Bentonite waterproof blanket is a kind of geosynthetic material specially used for preventing seepage in artificial lake water features, landfill sites, underground garages, rooftop gardens, water tanks, oil depots and chemical storage yards, etc. It is made by filling highly expansive sodium-based bentonite between specially made composite geotextiles and non-woven fabrics, and the bentonite anti-seepage pad formed by the needling method can form many small fiber Spaces. The bentonite particles cannot flow in one direction. When they come into contact with water, they form a uniform and high-density gel-like waterproof layer inside the pad, effectively preventing water leakage.
Iv. Product Specifications and Technical Indicators
序号 | 项目 | GCL－NP技术指标 | GCL－OF技术指标 | GCL－AH技术指标 |
01 | 膨润土防水毯单位面积质量（g/㎡） | ≥4000且不小于规定值 | ≥4000且不小于规定值 | ≥4000且不小于规定值 |
02 | 膨润土膨胀指数（mL/2g） | ≥24 | ≥24 | ≥24 |
03 | 吸蓝量（g/100g） | ≥30 | ≥30 | ≥30 |
04 | 拉伸强度（N/100mm） | ≥600 | ≥700 | ≥600 |
05 | 最大负荷下伸长率（%） | ≥10 | ≥10 | ≥8 |
06 | 剥离强度（N/100mm）非织造布与编织布 | ≥40 | ≥40 | - |
07 | 剥离强度（N/100mm）PE膜与非织造布 | - | ≥30 | - |
08 | 渗透系数（m/s） | ≤5.0×10﹣¹¹ | ≤5.0×10﹣¹² | ≤5.0×10﹣¹² |
09 | 耐静水压 | 0.4MPa，1h，无渗漏 | 0.6MPa，1h，无渗漏 | 0.6MPa，1h，无渗漏 |
10 | 滤失量（mL） | ≤18 | ≤18 | ≤18 |
11 | 膨润土耐久性（mL/2g） | ≥20 | ≥20 | ≥20 |