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Keystone® TW3 wall system is a proven, practical engineered earth retaining wall solution. The system consists of pre-cast concrete modular facing blocks, securely connected with Tensar® RE uniaxial geogrids. This helps to reinforce the soil behind to create a stable and maintenance-free retaining wall structure with up to 120 years design life.
To install, the Keystone TW3 concrete facing blocks are simply dry-laid without cranes required for construction. The 40kg weight of the standard 200mm high block is suitable to be handled by a two-person team.
Keystone TW3 is a cost-effective alternative to traditional concrete retaining walls, ideally used for infrastructure works including bridge abutments, culvert and tunnel portal entrances and technically challenging retaining structures.
![Tensar Keystone TW3 product image](/sites/default/files/styles/max_2600x2600/public/2023-07/geofabrics-tw3-800x600.jpg?itok=v0uxmKaf)
WHY CHOOSE KEYSTONE TW3?
- Savings of up to 50% in construction costs compared to conventional construction methods such as reinforced concrete retaining walls
- High-strength, positive connection to permanently support the face, even under severe dynamic loading such as earthquakes
- Versatile system that can accommodate curves, stairs and other design requirements
- Quick and easy to install without cranes, as it is simply dry-laid which helps to reduce construction costs
- High pH associated with concrete blocks does not affect the durability and functionality of HDPE geogrid reinforcement during the life of the structure
- Design support service using state-of-the-art software, TensarSoil
- System certified by BBA (British Board of Agreement) with 120-year design life for infrastructure, industrial and residential applications
Our team of experienced engineers can help you with your next project using TensarSoil design software, available free to Geofabrics clients.
![Tensar Keystone TW3 body image](/sites/default/files/styles/max_2600x2600/public/2023-05/geofabrics-tensar-keystone-tw3-1690X831.jpg?itok=ArG35ht9)
Keystone TW3 Range
Code |
Description |
Width (mm) |
Length (mm) |
Height (mm) |
TW3 BLOCK-15MPA |
TW3 Segmental Block 15mpa |
455 |
300 |
200 |
TW3 CAP BLOCK |
TW3 Capping Block |
455 |
300 |
200 |
TW3 Block |
TW3 Segmental Block |
455 |
300 |
200 |
Keystone TW3 Accessories
Code |
Description |
PLAB0039 |
Blue Plastiflex 39mm |
PLAB0051 |
Blue Plastiflex 51mm |
PLAB0063 |
Bue Plastiflex 63mm |
PLAB0076 |
Blue Plastiflex 76mm |
PLAB0089 |
Blue Plastiflex 89mm |
PLAB0102 |
Blue Plastiflex 102mm |
PLAB0127 |
Blue Plastiflex 127mm |
PLAB0152 |
Blue Plastiflex 152mm |
PLAB0178 |
Blue Plastiflex 178mm |
PLAB0254 |
Blue Plastiflex 254mm |
PLAB0305 |
Blue Plastiflex 305mm |