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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.
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WHY CHOOSE KEYSTONE TW3?
- Saves up to 50% in construction costs compared to traditional construction methods, such as reinforced concrete retaining walls
- Strong, reliable connection that permanently supports the face, even under severe heavy loads or in seismic conditions such as earthquakes. Full-scale shaking table tests, with horizontal accelerations up to 0.63g, have demonstrated minimal face deflection
- Versatile retaining wall system that can accommodate curves, stairs and other design requirements
- Quick and easy installation without the need for cranes, as it is lightweight and dry-stacked which helps reduce construction costs
- High pH level of the concrete blocks does not impact the durability and functionality of HDPE geogrid reinforcement throughout the lifespan of the structure
- Design support service using state-of-the-art software, TensarSoil
- Certified by BBA-HAPAS (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.
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