Strength boundary
Higher finished-product tensile does not prove a higher interface angle or internal shear envelope. Stability and tensile demand must be analysed separately.
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GCL TECHNICAL DATAMANUFACTURING ROUTECETCO® / Minerals Technologies Inc.
AUSTRALIAN ROUTEKontain technical sales, quoting + project support
TECHNICAL DATA SHEET · AUSTRALIAN FORMAT
BENTOMAT® DNW4000A-2
High-strength Australian scrim-reinforced double-nonwoven GCL
A high-strength Australian-market DNW GCL with 4.00 kg/m² minimum dry bentonite and 14 kN/m minimum tensile strength in both machine and cross-machine directions.
Kontain position
A screening option where biaxial tensile demand is materially higher, subject to the liner-system stability analysis and actual adjoining interfaces.
FORMATAustralian SI units
SOURCECETCO Australian TDS, April 2025
STATUSKontain technical summary
ISSUED24 July 2026
PUBLISHED PERFORMANCE
Metric values, with the test conditions visible.
Values below are presented in Australian engineering units. CETCO’s published ASTM methods are retained; the units have changed, not the underlying test method or acceptance basis.
Dry bentonite≥ 4.00 kg/m²
MD / CMD tensile≥ 14 / 14 kN/m
Peel strength≥ 600 N/m
Thickness≥ 5 mm
| Property | Published / specified value | Test method | MQC / published frequency |
|---|---|---|---|
| Index flux | ≤ 9.0 × 10⁻⁹ m³/m²/s | ASTM D5887 | 1 per 25,000 m² |
| Hydraulic conductivity | ≤ 5.0 × 10⁻¹¹ m/s | ASTM D5887 | 1 per 25,000 m² |
| Dry total mass per unit area | ≥ 4.40 kg/m² | ASTM D5993 | 1 per 4,000 m² |
| Dry bentonite mass per unit area | ≥ 4.00 kg/m² | ASTM D5993 | 1 per 4,000 m² |
| GCL moisture content | ≤ 35% | ASTM D5993 | 1 per 4,000 m² |
| Tensile strength - MD / CMD | ≥ 14 / 14 kN/m | ASTM D6768 | 1 per 20,000 m² |
| Peel strength | ≥ 600 N/m | ASTM D6496 | 1 per 4,000 m² |
| Thickness | ≥ 5 mm | EN ISO 9863-1 | 1 per 20,000 m² |
| Bentonite swell index | ≥ 24 mL/2 g | ASTM D5890 | 1 per 50 tonnes |
| Bentonite fluid loss | ≤ 18 mL | ASTM D5891 | 1 per 50 tonnes |
| Bentonite durability flux at 35 kPa | ≤ 1 × 10⁻⁷ m³/m²/s | GRI-GCL3 §5.6.1 / ASTM D6766 | Yearly |
| Nonwoven cap mass | ≥ 200 g/m² | ASTM D5261 | 1 per 20,000 m² |
| Scrim-nonwoven base mass | ≥ 200 g/m² | ASTM D5261 | 1 per 20,000 m² |
| Base and cap geotextile durability | ≥ 65% tensile retained | GRI-GCL3 §5.6.2 | Yearly |
| Typical roll | 5.0 m × 40.0 m | Manufacturer declaration | Continuous |
* Published typical peak value after hydration at approximately 9.6 kPa normal stress; not a minimum design envelope. † Published RESISTEX U20 ST maximum in deionised water and 0.02 M CaCl₂. Current factory certificates and project specifications govern.
DESIGN TRANSPARENCY
What still needs to be verified.
A compliant index value does not remove project-specific hydraulic, stability or installation risk.
Directionality
The supplied 14/14 kN/m values distinguish this grade from DNW40-AU/GP2 and DNW3700-GL, which publish 4 kN/m in the machine direction.
Evidence pack
Request the current yearly GRI-GCL3 bentonite and geotextile durability results with the order evidence.
SUPPLY + CUSTOMISATION
Quote the configuration the project actually needs.
Approximately 209 m² gross and 200 m² effective after standard overlaps. Confirm current factory dimensions, mass and origin for every order.
A budgeting assumption only. Final payload and pack plan require CETCO confirmation. Full production and freight lots generally support the strongest landed rate.
Alternative reinforcement and RESISTEX formulations can be evaluated where slope demand, adjoining interfaces or site liquid require a different configuration.
SOURCE + CONTROL
Kontain presentation. CETCO source data.
This webpage is a Kontain-prepared Australian presentation of CETCO published data. It is not a manufacturer reissue and should not be used to override a current CETCO TDS, certificate of analysis, project specification or engineering assessment.