Basal embankment reinforcement
Provides tensile resistance below embankment fill over weak or very soft foundation soils, coordinated with stability and deformation analyses.
Request supply quote StructWoven · high-strength PET systems
PET woven soft-soil reinforcement for defined load paths.
StructWoven PET is the long-term reinforcement range: high tensile capacity, reported strength at 5% strain, creep-reduced values and published LTDS. Biaxial and uniaxial products are separated because orientation and load path are design decisions—not ordering details.
01
Application boundary
Use PET when tensile resistance is a structural design input.
These products are used where stability, load transfer or differential settlement control relies on reinforcement strength over the design life. They are not positioned as routine road separators or as an interlocking pavement geogrid.
Piled load-transfer platforms
Spans between pile caps in the designed reinforcement direction. Layer arrangement, anchorage and construction sequence are project-specific.
Cavity or local-loss bridging
Supports a defined tensile load path where void geometry, allowable deformation and anchorage have been engineered.
Routine unbound pavements
Use BW-PP or BW-LS when separation or road-level deformation control is the duty. PET is selected when structural long-term resistance is required.
02
StructWoven SW-B
Biaxial PET reinforcement
Equal machine- and cross-direction ultimate strength suits two-way reinforcement, uncertain load directions and layouts that require comparable capacity across the full sheet.
| Grade | Ultimate strength MD / CD · kN/m | Elongation MD / CD · % | Strength at 5% MD · kN/m | CBR puncture kN | Creep-reduced MD · kN/m | Published LTDS MD · kN/m |
|---|---|---|---|---|---|---|
| SW-B50 | 50 / 50 | 10 / 10 | 20 | 5 | 36 | 30 |
| SW-B100 | 100 / 100 | 10 / 10 | 45 | 10 | 70 | 58 |
| SW-B150 | 150 / 150 | 10 / 10 | 68 | 14 | 108 | 88 |
| SW-B200 | 200 / 200 | 10 / 10 | 90 | 18 | 143 | 116 |
Hydraulic: opening size O90 ≤ 0.5 mm (EN ISO 12956); water permeability 15 L/m²/s (EN ISO 11058).
Standard rolls: 3.5 m, 4.5 m or 5.2 m wide × 50 m or 100 m long; custom manufacture available.
03
StructWoven SW-U
Uniaxial PET reinforcement
Higher machine-direction capacity with 50 kN/m cross-direction strength. Orient the machine direction with the governing force. Primary-direction joints and terminations must follow the design; they are not treated as ordinary overlaps.
| Grade | Ultimate strength MD / CD · kN/m | Elongation MD / CD · % | Strength at 5% MD · kN/m | CBR puncture kN | Creep-reduced MD · kN/m | Published LTDS MD · kN/m |
|---|---|---|---|---|---|---|
| SW-U100/50 | 100 / 50 | 10 / 10 | 45 | 6.5 | 71 | 58 |
| SW-U200/50 | 200 / 50 | 10 / 10 | 90 | 8.5 | 142 | 117 |
| SW-U300/50 | 300 / 50 | 10 / 10 | 135 | 9 | 214 | 175 |
| SW-U400/50 | 400 / 50 | 10 / 10 | 180 | 9.5 | 285 | 232 |
Orientation control
Machine direction follows the primary tensile force.
Show roll direction, layer sequence, development length, anchorage, secondary-direction laps and every termination on the drawings. Do not create a primary-direction joint unless the connection has a documented design resistance.
04
Reduction-factor method
Turn ultimate strength into a defensible design input.
Ultimate tensile strength is not allowable structural resistance. Apply component factors for time, construction and environment, then check the result against the published long-term design strength and the project material factor.
Preliminary design check
Component reduction-factor method
See how ultimate strength is reduced for creep, installation, durability and environment, then capped by the published long-term design strength.
Calculated result · primary direction
58.0kN/m
preliminary design resistance
preliminary design resistance
- Ultimate tensile strength, Tult
- 100 kN/m
- Component-reduced strength
- 59.5 kN/m
- Published LTDS cap
- 58 kN/m
- Governing reduced strength
- 58.0 kN/m
Tred = Tult ÷ (RFCR × RFID × RFD × RFENV)
Screening tool only. Representative installation factors are from third-party testing of a 50/50 PET woven with three specific fills; they do not transfer automatically to every grade, fill or compaction method. Final design requires the engineer's adopted standards, ULS/SLS checks and current project evidence.
05
Evidence and durability
What the published data supports—and what still belongs to the project.
Long-term tensile retention
Independent ASTM D5262 regression on representative PET wovens reported creep reduction factors of 1.39 at 75 years and 1.40 at 114 years at 20°C. Temperature and product-family transfer remain design checks.
Fill-specific damage
Representative ASTM D5818 testing on a 50/50 PET woven returned RFID values from 1.08 to 1.26 across silty sand, concrete sand and graded aggregate base. Final factors depend on the selected fill, lift and plant.
Buried-product exposure control
PET is supplied for rapid burial. Protect rolls, minimise exposure and assess pH, temperature and hydrolysis over the design life. Do not use the published range as an exposed geotextile.
Project soil interaction
Pull-out, direct shear, anchorage and interface coefficients are selected for the project soil and stress range. Commission testing where the structure depends on a specific interaction value.
Authority projects
High-strength reinforcement specifications commonly require current installation-damage testing using representative project fill. Kontain will submit the published evidence and coordinate project testing where the authority or designer requires a current, fill-specific result.
06
Installation controls
Continuity, orientation and cover are structural details.
Approve the formation
Confirm founding level, drainage, soft spots and design assumptions before unrolling. Do not disturb a weak foundation unnecessarily.
Set the axes
Mark machine direction and layer sequence. Keep uniaxial primary strength aligned with the drawing and biaxial panels in the nominated orientation.
Detail continuity
Use specified secondary laps, stitching, anchorage and development length. Primary-direction joints require designed load transfer.
Cover promptly
Place specified fill forward over the sheet without direct plant trafficking. Maintain minimum cover, control aggregate size and repair documented damage before burial.
07
Technical data
Kontain StructWoven data sheets
Published long-term values are portfolio inputs. The project designer remains responsible for reduction factors, design models, strain limits, load combinations and authority requirements.
StructWoven SW-BBiaxial PET reinforcement · 50–200 kN/mStructWoven SW-UUniaxial PET reinforcement · 100–400 kN/m
Australian technical references
- Queensland TMR MRTS100 - High Strength Geosynthetic Reinforcement in Road Embankments
- Queensland TMR MRTS27 - Geotextiles (Separation and Filtration)
- Queensland TMR MRTS58 - pavement reinforcement boundary and terminology
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
Start with the load path, not a catalogue grade.
Send the ground model, design life, geometry, fill, construction sequence and required tensile direction. Kontain will map the design demand to a standard grade or project-specific manufacture.