ASTM D5887 Geotextile Bentonite Pad Permeability Tester
Geosynthetic Clay Liner Bentonite Geotextile Composite Liner Permeameter
The geotextile bentonite pad permeability tester measures the permeability coefficient of bentonite waterproof blankets under specified pressure and time conditions. This instrument determines seepage flow through samples at controlled hydraulic pressure differences, calculating precise permeability coefficients for quality assessment.
Key Features
- 1+2 workstation configuration (main unit plus two auxiliary machines)
- Stainless steel countertop for corrosion resistance and durability
- Air pressure loading system eliminates electrical requirements
- Imported high-precision pressure regulating valves for stable performance
- Optimized loading circuit with simple valve operation
- Enhanced measurement accuracy (0.05 ml leakage volume precision)
- Integrated vacuum device for simplified sample preparation
- Negative pressure degassing system ensures water purity
- Movable test chamber for flexible operation
- Three-position valves for intuitive instrument control
- Pre-configured for future automation upgrades
Technical Specifications
| Parameter |
Specification |
| Sample size |
Ø 100 mm (customizable); maximum thickness 50 mm |
| Compression pressure range |
0 to 600 kPa (87 psi), continuously adjustable |
| End pressure range |
0 - 550 kPa (79 psi), continuously adjustable |
| Pressure indication |
Pressure holding with upstream/downstream switching display (1 kPa/0.1 psi accuracy) |
| Penetration measurement |
Scale reading with 0.05 ml precision |
| Titrant cylinder capacity |
25/400 ml maximum volume |
Compliance Standards
SL/T 235-30-2012, JG/T 193-Appendix A-2006, GB/T 35470-Appendix B-2017, JC/T 2054-Appendix A -2020, ASTM D5887-1999
Geotextile Bentonite Pad Permeability Tester