>16
kN/m
Slope Stability
Resists downslope forces, soil shear, and surface veneer movement.
High tensile strength
Effective slope protection must address the combined effects of rainfall, runoff, soil movement, drainage, and vegetation loss.
Common challenges include:
Traditional solutions such as erosion blankets, shotcrete, or thick cover layers address individual risks. However, they can be temporary, visually intrusive, maintenance-intensive, or unsuitable for long-term vegetated restoration.
Neoloy® Tough-Cells form a confined surface layer across the slope. Once expanded, anchored, and filled, the cellular structure holds the infill in place and improves resistance to erosion and surface movement.
The system supports slope performance through:
Made from Novel Polymeric Alloy – NPA, Neoloy® Tough-Cells provide high tensile strength, dimensional stability, and resistance to permanent deformation. This maintain confinement and slope protection over time, including on steep, exposed, or environmentally sensitive sites.
Neoloy® slope protection translates material performance into long-term slope stability.
Resists downslope forces, soil shear, and surface veneer movement.
Low creep preserves cell geometry and soil confinement over time.
An anchored cellular mattress supports steep and exposed slope surfaces.
NPA resists UV exposure, oxidation, water, and environmental conditions.
Perforated cells support soil-root interlock and vegetation establishment.
Confined infill limits runoff, rill formation, and progressive gully erosion.
Confinement reduces movement of soil, aggregate, or concrete infill.
Lightweight folded sections simplify transport, handling, and installation.
Neoloy® Tough-Cells protect exposed engineered slopes from erosion while stabilizing the surface layer. The system confines topsoil, aggregate or concrete and helps resist slope surface degradation caused by rainfall and runoff.
Typical use: cut slopes, fill slopes, transportation corridors, development platforms and infrastructure slopes.
Mining and earthworks sites often require long-term surface stabilization after major soil disturbance. Neoloy® Tough-Cells help restore vegetated surfaces, stabilize cover soil and reduce erosion on rehabilitated slopes.
Railway embankments require stable slope surfaces to reduce erosion, protect rail infrastructure and limit maintenance near active corridors. Neoloy® Tough-Cells provide mechanical slope protection while allowing vegetated or hard-surface finishes depending on design conditions.
Road and highway slopes are exposed to runoff, vibration, maintenance access and long-term weathering. Neoloy® Tough-Cells help stabilize roadside slopes, bridge approaches and abutment areas while supporting green restoration where required.
Construction, tunneling and cut-and-fill works often create steep or irregular slopes that require permanent surface stabilization. Neoloy® Tough-Cells can be anchored to the slope and filled with topsoil, aggregate or concrete depending on the slope angle and exposure conditions.
Typical use: tunnel portals, steep cut slopes, high embankments, infrastructure corridors and constrained geometric areas.
Neoloy® Tough-Cells can be designed with different infill types according to slope geometry, erosion risk, hydraulic forces and landscape requirements.
This allows engineers to match the surface cover to the required protection level instead of applying one uniform solution across different slope conditions.
The following applications are connected to slope protection, but they should be treated as separate dedicated pages because the engineering design criteria and search intent are different.
Channels, ditches, culverts, spillways and bioswales involve hydraulic exposure, flow velocity, tractive forces and stormwater performance. Neoloy® Tough-Cells can be filled with vegetation, aggregate or concrete depending on hydraulic stress and flow conditions.
[Explore Channels & Stormwater Management]
Reservoirs, landfills and containment systems require protection of geomembranes and liner systems. In this application, the primary engineering objective is not only erosion control, but also liner protection, containment integrity and resistance to environmental exposure.
[Explore Geomembrane Protection]
At the A3 Hindhead Tunnel, complex cut slopes reached 14–21 m high with inclinations of 45°–80°. The project required permanent erosion control, reliable surface stabilization, and a vegetated finish that blended with the surrounding landscape.
The engineered solution combined soil nails, steel mesh, and anchored Neoloy® Tough-Cells. Most areas were filled with topsoil and hydroseeded, while the steepest portal sections used shotcrete infill for durable hard-armour protection.
Explore the Hindhead Tunnel project →
PRS supports each project with engineering evaluation, system configuration, anchoring design guidance, infill selection and installation support to help engineers achieve the required performance for site-specific slope conditions.