In July 2015, an important project was carried out in Kolga-Jaani, during which a test road section with a gravel surface was stabilized. The aim of the project was to improve the quality and durability of the road section, making it dust-free and stable and strong enough to withstand the traffic load of the area. Before the start of the project, the Kolga-Jaani road section was covered with gravel, which, as a dusty and unstable surface, did not meet the needs of local traffic.

The project used StabilRoad® technology, by which the existing pavement material (gravel, sand, clay) was mixed with cement and StabilRoad® additive to achieve the required stability. The thickness of the stabilized layer was 30 cm, which ensures sufficient stability and strength of the road. The first half of the section was immediately coated with a granite crushed-bitumen coating to test the durability and performance of the coating immediately after stabilization. The other half of the section was left uncovered for the winter to observe how the stabilized layer would withstand winter weather conditions. In autumn, the theme land was organized and ditches were dug to ensure effective drainage of rainwater. The following summer, the other half of the section was also covered with a granite crushed-bitumen coating.

Stabilization of the Kolga-Jaani gravel test road section was an important step in improving quality and durability. Thanks to the professional application of the Estonian Transport Board and StabilRoad® technology, the stabilized road section is now much more durable and user-friendly. This project shows how innovative and environmentally friendly solutions can significantly improve the quality and durability of infrastructure.

Project data

• Project manager: Estonian Transport Board
• Location: Kolga-Jaani, Kõo, Estonia
• Area: 2,800 m2
• Construction date: July 2015
• Construction period: 1 day

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