lining systems
Geosynthetic Bentonite Liner (GCL)
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| GCL lined artificial lake at Nanjing Olympic Stadium | GCL Production Line |
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| GCL lined artificial lake at Jiang Ning Sports Stadium | Changzhou Liyang landfill: 100,000m2 of GCL-5000 |
Yuan Da's Geosynthetic Bentonite Clay Liner or GCL, is manufactured from high quality bentonite to meet international standards. It has been used in major projects in China, Europe, South America and Australia.
The Bentonite Clay Liner is made by distributing a uniform layer of granular sodium bentonite between two geotextiles. Using fine American needles, fibres from the upper non-woven geotextile are randomly needle-punched through the layer of bentonite and into the sulzer woven polypropylene geotextile. This process results in an even waterproof layer and a strong mechanical bond between the fabrics.
Applications:
Yuan Da GCL is suitable for landfill base lining,
landfill caps and closures, liquid containment, cut off walls, ponds, dams, lagoons and
tunnels. The GCL with bonded PE membrane is specially designed for sub-basement waterproofing applications.
Features:
- The black woven layer facilitates visual checking of the stitching quality as the liner is being laid.
- Production facilities are ISO9001 and CE accredited.
- All products are fully guaranteed by one of the largest textile corporations in China.
- Granulated bentonite offers Occupational Health and Safety benefits compared to powdered bentonite.
- Yuan Da GCL is available in grades from 3500g/m2 to 5500g/m2 with or without a PE membrane bonded to it.
- Available in rolls up to 5.8 m wide
- Production capacity of 7.5 million m2/year
- Direct shipping to major Australian ports, thus saving transport costs.
| Test Standard | Units | Grade | |
|---|---|---|---|
| Bentonite | GCL-4500 | ||
| Swell Index | ASTM D-5890 | ml/2g | > 26 |
| Fluid Loss | ASTM-D-5891 | ml | < 18 |
| Moisture Content | ASTM D-4643 | % | < 13 |
| Coefficient of Water Absorption | ASTM D-4643 | % | > 600 |
| Geotextiles | |||
| Polyester Cover (non-woven) | ASTM D 5261 | g/m2 | 200 |
| PP Carrier (woven) | ASTM D 5261 | g/m2 | 100 |
| Yuan Da Liner (as manufactured)* | |||
| Quality Assurance | ISO 9001; | Yes | |
| GCL Total Mass | ASTM D-5993 | g/m2 | > 4500 |
| Bentonite Mass | ASTM D-5993 | g/m2 | > 4200 |
| GCL Rupture Intensity Strength | ASTM D-6768 | kN/m | > 10.4 |
| Grab Strength (MD/CMD) | ASTM D-4632 | N | > 600/800 |
| CBR Strength | GB/T 14800-1993 | N | > 1800 |
| CBR Elongation | GB/T15788-1995 | % | > 15 |
| Peel Strength | ASTM D-6496 | N | > 72 |
| Hydraulic conductivity k-value (Permeability) |
ASTM D-5887 | m/s | < 5x10-10 |
| Dimensions - can be varied according to customer's requirements | |||
| Width | m | 5.1 | |
| Length | m | 30 | |
| Effective Coverage per Roll (5.1m x 30m excluding overlap requirements) |
m2 | 153 | |
DOWNLOAD BROCHURE - Yuan Da Geosynthetic Clay Liner 
DOWNLOAD BROCHURE - Yuan Da Geosynthetic Clay Liner with PE Membrane
Geocoating Liners
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| PMC lined artificial Potable Water Aquaduct |
This cutting edge liner technology combines the properties of geofabrics with proprietary coatings to deliver a range of flexible impervious membrane liners for use in rigid (concrete) and flexible (earthen) applications. Known as geocomposites and geocoatings, these liners are engineering led solutions designed to suit specific design and construction applications. For example having a long service life (30+ years) when exposed to high levels of UV or serviceability in highly aggressive environments.
Traditional geomembrane materials are not competent structural members and require a suitable supporting material to be effective. There are materials that can sustain higher shear forces and others that can accommodate movement with less likelihood of rupture. Some geomembrane materials require a very smooth surface to support them whilst others are able to accommodate rougher surfaces without loss of effectiveness. Geocoated liners have been designed to address all of the above issues currently limiting the widespread use of flexible liners in water storage and irrigation modernisation programs. They are developed to be an engineering solution.
The ITM Liner System* is a geocomposite (polyethylene laser bonded between two specified geotextiles), saturated with a specified geocoating such as acrylic, polyurea or cementitous compounds. This achieves the gas and liquid impermeability of polyethylenes without the material failure and costs associated with weld joins, thermal expansion, wrinkles and susceptibility to scoring. The geocomposite/geocoating provide installation and in-use protection.
The PMC Liner System™ is a polymer modified cementitous geocoating applied over a range of specially designed geotextiles and geocomposites. These range from very high tensile fibreglass reinforced geofabrics to non woven polypropylenes. The result is a very strong and damage resistant liner system designed for installation in tough working environments. The PMC Liner System™ is naturally UV resistant with no discernible methods of degradation (the inorganics act as a sunscreen).The PMC Liner System’s™ tear, burst and puncture resistance provide strong protection against damage by cattle and kangaroos. The textured surface assists trafficability and the coating achieves the highest UL-94 fire resistance rating (self extinguishing and only surface damage). The PMC Liner System does not require replacement; it can be recoated. In addition, it has exceptionally low repair and maintenance costs compared with polyolefins, such as HDPE, etc.
DOWNLOAD BROCHURE - 13 PMC Liner System Product Specification
DOWNLOAD BROCHURE - 10 ITL ITM Liner Product Data Sheet
Lining materials - HDPE, LDPE, PVC, EVA, EPDM
Yuan Da supplies a range of HDPE, LPDE and reinforced PVC lining materials. These liners are made from new materials (not recycled) and can be manufactured in varying thicknesses to suit particular applications such as:
- Landfills
- Waste Water Treatment Plant liners
- Mining applications
- Irrigation canal liners
- Ponds
- Secondary Containment liners (eg: bunds)
- Non potable water containment lagoons
- Irrigation dams
Our HDPE Liner is available in a range of thicknesses and profiles - smooth, single side rough or double sided rough. The liner is manufactured to international standards. Details of the Quality Assessment of the Manufacturing Process are available on request.
| Item | Unit | Value | Test Method |
|---|---|---|---|
| Thickness | mm | 1.50 | ASTM D5199 |
| Density | g/cc | 0.94 | ASTM D1505/D792 |
| Tensile properties: | |||
| Strength at break | KN/m | 40 | ASTM D6693 Type IV |
| Strength at yield | KN/m | 22 | ASTM D6693 Type IV |
| Elongation at break | % | 700 | ASTM D6693 Type IV |
| Elongation at yield | % | 12 | ASTM D6693 Type IV |
| Tensile resistance | N | 222 | ASTM D1004 |
| Puncture resistance | N | 534 | ASTM D4833 |
| Stress crack resistance | hours | 300 | ASTM D5397 |
| Carbon Black Content | % | 2.0-3.0 | ASTM D1603 |
| Oxidative Induction Time | minute | 100 | ASTM D3895 |
| Oven aging at 85oC. Standard OIT retained after 90 days |
% | 55 | ASTM D5721 ASTM D3895 |
| UV Resistance: High Pressure OIT retained after 1600 hours |
% | 50 | ASTM D5885 |
| Roll | length | M | 141 |
| Roll | width | M | 7 |
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| Reinforced PVC used for Taihu Lake rehabilitation project |
| Thickness | 0.74mm |
| Weight | 880g/m2 |
| Draw Strength(N/5CM) | |
| longitude: | 4100 |
| latitude: | 3500 |
| Tear Strength(N): | |
| longitude | 380 |
| latitude | 550 |
| Density(radix/inch) | |
| longitude | 15 |
| longitude | 15 |
Ethylene Vinyl Acetate sheeting can be supplied in a wide range of grades. Yuan Da's EVA has been used for major tunnelling projects in China.
| Item | Unit | Chinese Standard | Test Result |
|---|---|---|---|
| Tensile Strength | MPa | 16 | 22 |
| Rupture Elongation | % | 550 | 712 |
| Tear Strength | KN/m | 60 | 80 |
| Low Temperature Curvature | -35oC | No flaw | No flaw |
| Permeability | 0.3MPa, 30min | No water penetration | No water penetration |
| Viscosity in a cut environment | N/mm | 5 | >5 |
| Thicknesses available | mm | 1.0 - 2.0 | |
| Width available | m | 2.1 - 2.3 | |
| Length (standard) m 30 | m | 30 |
EPDM
| Property | Value |
|---|---|
| Density (g/m2) | 1.25 - 1.35 |
| Tear Strength (N/mm) | >40 |
| Bending/curvature at - 20oC | Nil |
| Filter Permittivity cm/s | <10-11 |
| Rupture Strength (longitude/latitude) MPa | >15/13 |
| Stretch Elongation Rate (longitude/latitude) % | >220/200 |
| Expansion and shrinkage % | <5 |