Evidence gate
GRI-GCL3 is a manufacturing quality-control baseline, not automatic project acceptance. Require current order test evidence, certificate of analysis, roll and lot traceability and an agreed conformance-testing plan.
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GCL TECHNICAL DATAMANUFACTURING ROUTEPrivate-label manufacturing partner
AUSTRALIAN ROUTEKontain GCL Systems
TECHNICAL DATA SHEET · AUSTRALIAN FORMAT
KGCL-ST
Kontain value-engineered reinforced GCL
An uncoated reinforced GCL with the nonwoven geotextile on the upper face, high-swelling sodium bentonite through the core and the woven carrier on the underside.
Kontain position
A cost-led option for conventional, non-aggressive containment where the client accepts an explicit evidence plan. It is not positioned as a CETCO product or as automatically equivalent to BENTOMAT ST.
01Nonwoven upper geotextile≥ 200 g/m²
02Sodium bentonite core≥ 3.7 kg/m² dry
03Woven underside carrier≥ 110 g/m²
FORMATAustralian SI units
SOURCESupplier TDS dated 2 July 2026 + Kontain supply specification
STATUSPreliminary product comparison
ISSUED17 July 2026
PUBLISHED PERFORMANCE
Metric values, with the test conditions visible.
Values below reproduce the supplied factory sheet in Australian engineering units. KGCL-ST is ordered against the minimum GRI-GCL3 reinforced GT-related MQC frequencies shown; the current factory MQC plan and order reports must evidence that programme.
Dry bentonite≥ 3.7 kg/m²
MD tensile strength8 kN/m published
Peel strength0.36 kN/m published
Hydraulic conductivity5 × 10⁻¹¹ m/s published
| Property | Published / specified value | Test method | MQC / published frequency |
|---|---|---|---|
| Nonwoven upper geotextile massKontain supply minimum | ≥ 200 g/m² | ASTM D5261 | 1 per 20,000 m² |
| Woven underside geotextile massKontain supply minimum | ≥ 110 g/m² | ASTM D5261 | 1 per 20,000 m² |
| Dry bentonite mass per unit area | ≥ 3.7 kg/m² | ASTM D5993 | 1 per 4,000 m² |
| Dry total GCL mass per unit area | ≥ 4.0 kg/m² | ASTM D5993 | 1 per 4,000 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 |
| Moisture contentSupplier value; tighter than GRI maximum | ≤ 12% | ASTM D5993 | 1 per 4,000 m² |
| Tensile strength — machine directionKontain supply minimum | ≥ 8 kN/m | ASTM D6768 | 1 per 20,000 m² |
| Elongation at break — machine directionAdditional supplier property | ≥ 10% | EN ISO 10319 | Nominal 1 per 20,000 m² |
| Peel strength — machine direction | ≥ 0.36 kN/m | ASTM D6496 | 1 per 4,000 m² |
| CBR puncture strengthAdditional supplier property | ≥ 1.5 kN | EN ISO 12236 | Nominal 1 per 20,000 m² |
| Hydraulic conductivity | ≤ 5 × 10⁻¹¹ m/s | ASTM D5887 | 1 per 25,000 m² |
| Index flux | ≤ 1 × 10⁻⁸ m³/m²/s | ASTM D5887 | 1 per 25,000 m² |
KGCL-ST is the uncoated configuration. The separate 0.20 mm PE-geofilm-laminated configuration is offered as KGCL-C. GRI-GCL3 frequencies are manufacturing quality-control minimums; current lot certificates, traceability, agreed project conformance testing and the project specification still govern acceptance.
DESIGN TRANSPARENCY
What still needs to be verified.
A compliant index value does not remove project-specific hydraulic, stability or installation risk.
Construction
KGCL-ST is uncoated: nonwoven upper face, sodium-bentonite core and woven underside. Where a PE geofilm is required, specify the separate KGCL-C product.
Project gate
The supplied sheet does not establish site-liquid compatibility, internal shear or interface behaviour. Project chemistry, confinement, slope and adjacent materials still govern the verification programme.
SUPPLY + CUSTOMISATION
Quote the configuration the project actually needs.
The reference roll is 30 m long and 175.5 m² gross. Roll length is customer-selectable, subject to factory roll mass, handling and transport confirmation.
Kontain can nominate the roll length to suit panel geometry, lifting method and freight. Effective coverage is calculated from the approved overlap and detailing schedule.
Current certificate of analysis, roll and lot traceability, configuration confirmation and an agreed independent conformance plan are required before release.
SOURCE + CONTROL
Kontain presentation. Supplier source data.
This webpage combines the manufacturer-supplied core data with Kontain's KGCL-ST uncoated construction and MQC requirements. The manufacturing source and current factory evidence will be disclosed during technical approval and before order release. It is not a manufacturer reissue, a CETCO document or proof of order-specific conformance.