Unbound access roads
Separates imported pavement material from cohesive or weak subgrades and limits contamination during placement and trafficking.
Request supply quote BaseWoven · polypropylene road systems
PP wovens for roads—split by the work they actually do.
BaseWoven PP provides separation, filtration and construction survivability. BaseWoven LS adds measured tensile response at 2% strain and interface data where deformation control is part of the road-platform design. Neither product is an extruded interlock grid.
01
BaseWoven BW-PP
Standard PP separation woven
Use where keeping granular fill and subgrade fines apart is the first job. The grade is checked for puncture, tear, grab strength, opening size and hydraulic response against the fill, subgrade and placement method. Ultimate tensile strength is a supporting property—not the selection method by itself.
Working platforms
Provides a continuous separator below granular working layers where installation survivability and filtration are required.
Structural reinforcement
No published long-term design strength is assigned. Do not convert ultimate tensile strength into an embankment design resistance.
Manufacturer-published values
Standard grade schedule
Mechanical values are MARV. Hydraulic values are manufacturer supplied. Standard rolls are 5.2 m × 100 m; project-specific lengths, widths, strengths and opening sizes are available.
| Grade | Wide-width tensile MD / CD · kN/m | Elongation MD / CD · % | CBR puncture kN | Grab N | Trapezoid tear N | Flow rate L/min/m² | Permittivity s⁻¹ | Opening mm |
|---|---|---|---|---|---|---|---|---|
| BW-PP40 | 40 / 40 | <10 / <10 | 5.5 | 1,410 | 500 | 1,900 | 0.64 | 0.425 |
| BW-PP50 | 52 / 52 | <10 / <10 | 7.5 | 1,880 | 610 | 2,000 | 0.67 | 0.425 |
| BW-PP70 | 67 / 60 | <10 / <10 | 8.5 | 2,400 | 690 | 2,500 | 0.83 | 0.450 |
| BW-PP80 | 80 / 80 | <10 / <10 | 8.8 | 2,600 | 800 | 2,000 | 0.67 | 0.450 |
| BW-PP90 | 90 / 90 | <10 / <10 | 9.0 | 2,700 | 1,300 | 2,500 | 0.83 | 0.420 |
Test basis: wide-width tensile ASTM D4595; grab ASTM D4632; CBR puncture ASTM D6241; tear ASTM D4533; flow and permittivity ASTM D4491. The supplied opening values are not treated as ISO 12956 O90 or an Australian EOS result: test methods are not interchangeable. Confirm the project-specified opening-size method before approval.
02
BaseWoven BW-LS
Low-strain PP road reinforcement
Use this range where the road design needs reported strength at 2% strain, interface interaction and installation-damage evidence—not simply a higher ultimate tensile or puncture value. It remains a closed woven sheet and does not create geogrid-style aperture interlock.
Not simply a heavier woven
The useful difference is response at working strain.
BW-LS reports tensile capacity at 2% strain in both directions. This is a stiffness reference for assessing how early tensile resistance may be mobilised, before large rutting or membrane deformation develops.
- 2% wide-width tensile strength
- Pull-out interaction coefficient
- Installation-damage retained strength
- Separate ASTM AOS and ISO O90 values
Selection evidence
No single property makes an RSi-type road woven.
The relevant evidence stack is low-strain tensile response, soil interaction, installation survivability, hydraulic compatibility and, where a pavement benefit is claimed, product-specific trafficking performance.
- Ultimate strength alone is not enough
- CBR puncture indicates survivability—not restraint
- No assumed aperture confinement mechanism
- No transfer of another product's calibration
| Grade | 2% strength MD / CD · kN/m | Ultimate MD / CD · kN/m | CBR N | Grab N | Flow L/min/m² | Permittivity s⁻¹ | AOS / O90 mm | Install retained % | Pull-out coefficient |
|---|---|---|---|---|---|---|---|---|---|
| BW-LS70 | 10 / 20 | 70 / 90 | 6,650 | 1,520 | 3,059 | 0.90 | 0.40 / 0.35 | 90 | 0.89 |
| BW-LS85 | 10 / 27 | 85 / 90 | 9,500 | 2,120 | 3,056 | 1.00 | 0.40 / 0.32 | 90 | 0.90 |
Test basis: 2% and ultimate tensile ASTM D4595; CBR ASTM D6241; grab ASTM D4632; flow/permittivity ASTM D4491; AOS ASTM D4751; O90 ISO 12956; installation damage ASTM D5818; pull-out ASTM D6706. Standard rolls: 4.6 m or 5.2 m wide × 100 m or 200 m long. Custom manufacture is available. BW-LS is positioned from its published performance data; it is not claimed to reproduce a competitor's patented double-layer, corrugated or wicking-yarn construction.
03
Australian specification boundary
A road woven must be checked as a system—not assigned a class from one number.
The following limits are deliberately explicit because nominal strength alone can create a false equivalence between products.
G-rating is not a simple conversion
No Australian G-rating is published for these ranges. Do not infer a G-class from ASTM CBR, grab or tear results. A project requiring G-rating needs the specified Australian test data and rating procedure.
2% strength must meet the project threshold
BW-LS reports 10 kN/m in the machine direction at 2% strain. Queensland MRTS58 Type 1 and Type 2 thresholds are higher, so authority use requires product-specific review—not an automatic compliance statement.
Installation damage depends on the fill
Reported retained strength is supported by ASTM D5818 results. Third-party tests ranged from RFID 1.03 to 1.18 for the tested low-strain fabric as fill changed from silty sand to graded aggregate base. Use project fill and placement energy for final adoption.
Hydraulics need compatible methods
Permittivity under ASTM D4491, AOS under ASTM D4751 and O90 under ISO 12956 answer related but different specification questions. Match the tender method; do not rename one result as another.
04
Construction control
The installation sequence protects the function.
Prepare
Remove protrusions and standing water where practical. Do not proof-roll very weak ground simply to create a smooth surface.
Orient and overlap
Lay flat, tension by hand and use the project overlap schedule. Increase overlap as subgrade support reduces; seek engineering advice on extremely soft ground.
Place cover forward
End-tip onto placed fill and push forward. Do not traffic tracked plant directly on exposed woven; establish the specified cover before construction trafficking.
Repair and record
Patch tears with sound material extending beyond the damage by the project overlap. Record roll identification, location, overlaps and damage repairs.
05
Technical data
Kontain BaseWoven data sheets
Use the range sheet for product comparison, then confirm project-specific acceptance criteria in the order or submittal.
BaseWoven BW-PPStandard PP separation woven · 5 gradesBaseWoven BW-LSLow-strain PP road woven · 2 grades
Australian technical references
- Queensland TMR MRTS58 - Geosynthetics for Subgrade and Pavement Reinforcement
- Queensland TMR MRTS27 - Geotextiles (Separation and Filtration)
Project specifications and the designer's adopted standard govern. Kontain data sheets do not replace project-specific design, authority acceptance or product conformance testing.
Project-specific supply
Match the road woven to the subgrade and fill.
Send the subgrade CBR, aggregate grading, maximum particle size, lift thickness, plant and required specification. Kontain will nominate a standard grade or arrange project-specific manufacture.