Tag Archive for: estonia

Renovation of Stora Enso Imavere Log Sorting Yard 9 years later

In July 2016, a project was carried out to renovate the deteriorated log sorting yard at Stora Enso’s Imavere facility. The yard, originally constructed during the Soviet era, had been in constant use for decades. Over time, the subsoil had subsided, the pavement had significantly degraded, and several soft, waterlogged areas had formed—areas where repeated filling and maintenance had proven ineffective. The primary goal of the renovation project was to stabilize and improve the structural integrity of the yard’s surface and subbase to ensure its durability and long-term usability.

To achieve this, the StabilRoad technology was employed. Remarkably, stabilization work covering nearly 4,000 square meters was completed in just one day, using only the existing onsite materials for recycling. Six months later—following inspection and approval by the Finnish owners—a 4 cm asphalt layer was applied over the stabilized surface. Since the renovation, the yard has been subject to daily heavy-duty use, including continuous loading and operation by 40-ton log forklifts. Over the course of nine years, there have been no signs of wear or structural degradation. On the contrary, recent soil sample analyses indicate an increase in compressive strength, demonstrating the long-term effectiveness of the stabilization method.

 

Kolga-Jaani test section stabilization project 10 years later

In July 2015, a significant infrastructure project was carried out in Kolga-Jaani, involving the stabilization of a gravel-surfaced test road section. The goal of the project was to improve the quality and durability of the road segment by ensuring a dust-free, stable, and sufficiently strong surface capable of withstanding local traffic loads. In the second year, the road section was treated with a bitumen emulsion and crushed stone surface (a so-called chip seal), and in the fourth year, a 4 cm thick asphalt layer was added.

StabilRoad Holding has continuously monitored the condition of the road segment over the past 10 years. As part of this monitoring, core samples have been taken from the road surface every two years to assess changes in the compressive strength of the stabilized soil through laboratory testing. The results show an average increase in compressive strength of 1.0 to 3.0 MPa over the ten-year period—an exceptionally positive outcome. Visual inspections confirm that the appearance of the stabilized road surface has remained unchanged compared to its original condition. Based on current assessments, the same level of stability and strength is expected to persist for the next 50 to 100 years.

Tag Archive for: estonia

Renovation of the Imavere log sorting area warehouse

In July 2016, a project was carried out, during which the old dilapidated asphalt covered warehouse was renovated in the Imavere log sorting area. The goal of the project was to stabilize and improve the decking of the warehouse to ensure its durability and long-term service life. Over time, the old asphalt coating of the warehouse had decayed, making work difficult and dangerous. The Imavere log sorting area is an important part of Stora Enso’s logistics chain, where large quantities of wood are sorted and stored.

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 existing soil was thoroughly mixed to create a stable base for further work. After stabilization, the storage area was left uncovered for the winter, allowing the soil to settle and gain the necessary strength.

The renovation of the sorting area warehouse was a successful project that demonstrated the benefits of using StabilRoad® technology. Thanks to the StabilRoad® technology, the warehouse is significantly stronger and more durable, offering safe and comfortable work arrangements for the staff of the entire sorting area.

Project data

  • Project manager: StoraEnso
  • Location: Imavere, Estonia
  • Area: 3,800 m2
  • Construction date: July 2016
  • Construction period: 2 days

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Stabilization of the Kolga-Jaani gravel test road section

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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