The Challenge

Several cut slopes along Nguyen Tat Thanh Road showed signs of surface instability due to weathering, variable rock mass conditions, and intense seasonal rainfall. The excavated slopes consist of heterogeneous and fractured materials with reduced inherent strength, making them vulnerable to shallow failures.

During heavy rain, surface erosion, raveling of loose rock, and localized detachment of weathered material were observed. These issues not only threatened the long-term integrity of the slope but also posed safety risks to road users through potential rockfall and debris accumulation on the carriageway.

With increasing traffic demand and the need to ensure uninterrupted road operation, a durable and reliable surface stabilization solution was required.

The Solution

To address these challenges, MacMat® HS was selected as the primary surface-strengthening system.

MacMat® HS combines a three-dimensional polymer geomat with high-strength steel mesh, delivering both erosion control and mechanical reinforcement. Installed directly onto the slope face, the system effectively confines loose and weathered material, preventing raveling and small-scale detachment.

Its high tensile capacity allows it to bridge minor discontinuities and restrain unstable surface layers, reducing the risk of shallow failures. In addition, the 3D structure supports vegetation growth, enhancing long-term slope protection and environmental integration.