Interlocking Hexagonal Blocks for Durable Erosion Control

The Wairarapa council is utilizing new anti-erosion technology to protect a crucial road, with officials expressing hope that the system will serve as a magic bullet for the infrastructure’s stability.

The implemented system is constructed from interlocking hexagonal blocks filled with aggregate. This method was selected to replace the use of boulders, which frequently washed away and failed to provide long-term protection for the roadway.

Erosion Control Technology

Interlocking hexagonal systems are designed to provide surface stabilization and erosion control. By utilizing a hexagonal shape, these blocks can create a flexible and durable mat that is often used for embankments, slope protection, and low-water crossings.

Such modular systems are typically designed to withstand demanding environments by creating self-supporting structures. This geometry is often used in infrastructure projects to control and de-power water movement, which helps in the long-term protection of property and critical infrastructure.

Unlike loose boulders, which can be displaced by high-energy water flow, interlocking concrete blocks are intended to remain secure while following the existing contours of the land. These systems can be installed over site-specific filter fabrics on prepared surfaces to prevent the underlying soil from washing away.