Subsidence correction method - List of Manufacturers, Suppliers, Companies and Products

Subsidence correction method Product List

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"Concrete slab sinking correction method" contributes to the longevity of social infrastructure.

"Concrete slab sinking correction method" contributes to the longevity of social infrastructure.

Using high-strength urethane resin, we will correct the deformations such as subsidence, steps, flapping, gaps, and cavities that have occurred in the concrete slab, without excavation and within a short construction period.

The Upcon concrete slab settlement correction method (KT-080008-A, NETIS registration period ended in October 2014) quickly resolves issues such as settlement, unevenness, flapping, gaps, and voids that occur in concrete pavement slabs commonly used in highways and other areas, using specially developed high-strength polyurethane resin. It achieves a short construction period by utilizing a highly mobile plant without breaking the existing pavement slabs or requiring excavation work. This minimizes the period of service suspension and has a proven track record as a planned and efficient method for maintaining social infrastructure. This technology is also adopted not only for highways but also for repair work in ports and airport aprons, as well as disaster recovery work. Upcon will exhibit at the "Highway Techno Fair 2023," where cutting-edge technologies supporting highways will be showcased. Date: November 9 (Thursday) and 10 (Friday), 2023, from 10:00 to 17:00 Location: Tokyo Big Sight, West Hall 3 Exhibition Booth No: A-04 On that day, there will also be a demonstration of settlement correction using polyurethane resin. We invite you to take this opportunity to see it. We look forward to your visit.

  • Renovation and repair methods

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[Construction Example] Filling voids and correcting unevenness in CO pavement slabs inside highway tunnels.

[Construction Example] Filling voids and correcting unevenness in CO pavement slabs inside highway tunnels.

Filling the voids and correcting the unevenness in the concrete pavement slabs inside the highway tunnel without excavation and within a short construction period.

【Customer Consultation and Issues】 A gap of up to 40mm has developed in the concrete pavement slabs within the highway tunnel, resulting in a height difference of up to 64mm due to fluttering. Patching materials were used to address the height differences, but to eliminate the discrepancies in the concrete pavement slabs, we adopted Upcon's concrete slab settlement correction method. This method allows for height correction within a short construction period without breaking the existing concrete pavement slabs. The gaps are filled with polyurethane resin, which expands on its own to fill the voids completely. The polyurethane resin injected beneath the concrete slabs flows into the crushed stone layer of the subbase, resolving any looseness in the surface layer and using the pressure from its foaming and expansion to lift the concrete pavement slabs and eliminate the height differences. 【Site Information】 Hiroshima Prefecture Total Construction Area: 653 square meters Construction Period: 10 nights

  • Road construction

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Concrete floor slab settlement correction method "Upcon"

Concrete floor slab settlement correction method "Upcon"

No need to remove luggage or machinery! Quickly correct floor subsidence, unevenness, tilting, and gaps without stopping operations.

The "Upcon Method" involves drilling small holes with a diameter of 16mm into existing concrete floors that have experienced subsidence or tilting. While continuously monitoring the level in millimeter increments, polyurethane resin is injected. The resin injected beneath the floor compresses and strengthens the ground with pressure that causes it to expand in a short time. This process raises the concrete back to its original position while improving the bearing capacity of the ground. Additionally, the final strength of the resin develops in about 60 minutes, and even if there are voids beneath the floor, the same method can be used to fill those voids. 【Features】 ■ Construction time is 1/10 of conventional methods (concrete replacement) (based on our company’s comparison) ■ No need to remove goods or machinery ■ Construction without stopping operations ■ High precision and reliable construction by our skilled employees ■ Completely non-fluorinated resin *For more details, please refer to the PDF materials or feel free to contact us.

  • Renovation and repair methods

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[Construction Example] Food Processing Plant: Earthquake Recovery Floor Slab Settlement Correction Work

[Construction Example] Food Processing Plant: Earthquake Recovery Floor Slab Settlement Correction Work

Settlement of the earthen floor caused by the earthquake! Correcting the settled floor before the factory renovation work in a short period of time.

We would like to introduce a case of "floor sinking correction work (earthquake recovery work)" carried out at a food processing factory in Iwate Prefecture. Due to the impact of the Great East Japan Earthquake, extensive renovations were necessary, and to achieve a swift recovery, the Upcon method, which allows for quick corrections, was adopted. The construction area was approximately 1,135 m², with a maximum gap of 221 mm. The construction period was six days, utilizing two construction plant vehicles. [Case Overview] - Construction Area: Approximately 1,135 m² - Maximum Gap: 221 mm - Area: Iwate Prefecture - Construction Period: 6 days (Handled by 2 construction plant vehicles) *For more details, please refer to the PDF document or feel free to contact us.

  • Renovation and repair methods

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[Construction Case] Repairing the gaps between the floor and walls of a large shopping center.

[Construction Case] Repairing the gaps between the floor and walls of a large shopping center.

A significant subsidence of the floor due to weak ground! Introducing a case where corrections were made at night during the business closure.

Here is a case study of "floor sinking correction" conducted at a large shopping center in Nara Prefecture. Due to weak ground, the floor had sunk significantly. As a result of the floor sinking, gaps were observed in various places, such as between the floor and walls and between the walls and ceiling. An up-con method that can be corrected during nighttime while the business is closed was adopted, and our company carried out the correction. 【Case Overview】 ■ Construction Area: Approximately 3,240m2 (Backyard 405m2, Store Interior 2,835m2) ■ Maximum Sinking Amount: 94mm ■ Area: Nara Prefecture ■ Construction Period: 25 nights *Supported by 2 construction plant vehicles *For more details, please refer to the PDF document or feel free to contact us.

  • Renovation and repair methods
  • Ground foundation construction method
  • Civil Engineering Method

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[Construction Example] Construction without moving the rack: Warehouse subsidence correction (Fukushima Prefecture)

[Construction Example] Construction without moving the rack: Warehouse subsidence correction (Fukushima Prefecture)

No need to remove heavy racks or machinery! Here is a case where modifications were completed in just 4 days.

We would like to introduce a case of settlement correction implemented at a warehouse in Fukushima Prefecture. Due to the effects of the Great East Japan Earthquake that occurred in 2011, gradual settlement progressed over the years. After a few years, floor sagging and tilting began to occur inside the warehouse, and inclinations also developed in the rack installation areas. This caused issues such as the forklift forks not fitting properly, leading to "longer loading and unloading times," which disrupted operations and caused difficulties. In this project, we adopted the Upcon method, which allows for construction without moving heavy racks in a short construction period. We were able to correct an area of approximately 1,250 m² in just four days (with a maximum settlement of about 78 mm). [Case Overview] - Construction Area: Approximately 1,250 m² - Maximum Settlement: 78 mm - Location: Warehouse in Fukushima Prefecture - Construction Period: 4 days *For more details, please refer to the PDF document or feel free to contact us.

  • Renovation and repair methods
  • Ground foundation construction method
  • Civil Engineering Method

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