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What Is the Application of 0.75mm Geomembrane?

Release time:

2025-07-25

A 0.75mm geomembrane is a versatile geosynthetic material that has become essential in various environmental and construction applications. This medium-thickness geomembrane offers an optimal balance between performance and cost-effectiveness, making it particularly valuable for projects requiring reliable fluid containment and environmental protection.

Understanding 0.75mm Geomembranes

0.75mm geomembrane

Key Characteristics of 0.75mm Geomembranes

1. Superior Impermeability

The 0.75mm thickness provides excellent hydraulic containment with:

Water vapor permeability coefficient as low as K≤1.0×10⁻¹³ g·cm/(cm²·s·Pa)
Effective prevention of leachate migration in landfill applications
Reliable barrier against chemical permeation

2. Enhanced Mechanical Properties

Manufactured using advanced blown film technology, these geomembranes offer:

Uniform thickness distribution (±0.03mm tolerance)
Balanced longitudinal and transverse tensile strength
High elongation at break (typically >700%)

3. Durability Features

UV stabilization for extended outdoor service life
Resistance to chemical corrosion and microbial degradation
Temperature stability range from -70°C to +80°C

Primary Applications of 0.75mm Geomembranes

1. Landfill Rainwater Diversion Systems

In modern waste management facilities, 0.75mm geomembranes play a crucial role in:

Creating effective rain/leachate separation layers
Preventing groundwater contamination from landfill runoff
Serving as intermediate covers during landfill phased construction

2. Aquaculture Containment

Widely used in fish and shrimp farming operations for:

Pond lining to maintain water quality
Prevention of soil salinity transfer
Reduction of water exchange requirements

3. Water Conservation Projects

Irrigation canal lining to prevent seepage losses
Decorative water feature construction
Temporary water storage reservoirs

4. Industrial Applications

Secondary containment for chemical processing areas
Lining for evaporation ponds
Temporary spill containment barriers

Performance Comparison: 0.75mm vs Thicker Geomembranes

Parameter	0.75mm Geomembrane	1.5mm Geomembrane
Applications	Rainwater diversion, aquaculture, temporary covers	Primary landfill liners, hazardous waste containment
Puncture Resistance	Moderate (suitable for prepared subgrades)	High (tolerates more aggressive substrates)
Installation Cost	Lower (easier handling and welding)	Higher (requires more labor and equipment)
Project Lifespan	10-15 years (with proper installation)	20-30 years
Permeability	Equivalent performance in fluid containment	Equivalent performance in fluid containment

HDPE liner

Installation Best Practices for 0.75mm Geomembranes

1. Subgrade Preparation

Remove all sharp objects and vegetation
Compact soil to 95% standard Proctor density
Install protective geotextile when required

2. Welding Techniques

Use dual-track hot wedge welders for primary seams
Maintain optimal temperature (300-350°C for HDPE)
Conduct regular peel and destructive tests

3. Quality Control Measures

100% visual inspection of all seams
Air pressure testing of dual-track welds
Regular thickness verification during installation

Standards and Certifications

0.75mm geomembranes typically comply with:

National Standards: GB/T 17643-2011 (China)
International Equivalents: ASTM GM-13, GRI-GM13
Environmental Certifications: NSF/ANSI 61 for potable water contact

Cost Considerations

The 0.75mm thickness offers significant economic advantages:

Approximately 30-40% material cost savings compared to 1.5mm geomembranes
Reduced transportation costs due to lighter weight
Faster installation times lowering labor expenses

Conclusion: Selecting the Right Geomembrane Thickness

While 0.75mm geomembranes may not be suitable for primary landfill liners (which typically require ≥1.5mm), they provide an excellent solution for:

Secondary containment applications
Temporary environmental protection
Projects with budget constraints but still requiring reliable performance

For projects where long-term durability under extreme conditions isn't the primary concern, 0.75mm geomembranes offer an optimal combination of performance and value. Always consult with a geosynthetics specialist to ensure proper material selection for your specific application.

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