Corrective Method - List of Manufacturers, Suppliers, Companies and Products

[Construction Case] Fukushima Prefecture, Soma Port Port Maintenance Management Work (Quay Restoration)

Due to ground subsidence at the harbor quay, there are steps and depressions in the concrete pavement slabs, resulting in the loss of water gradient and the formation of puddles. This issue is resolved using the upcon method.

The Upcon method, which allows for modifications without breaking existing concrete pavement slabs and within a short construction period, has been widely adopted in public works such as roads and airports as a maintenance and repair method. This time, we will introduce a construction site for correcting the sinking of concrete pavement slabs and filling voids at a quay in a port. The quay at Soma Port in Fukushima Prefecture, where cargo loading and unloading occurs frequently, has experienced issues due to ground subsidence, resulting in steps and sinking in the concrete pavement slabs, eliminating the water slope and causing puddles. This has hindered cargo operations. The Upcon method was chosen because it has no environmental impact compared to other methods and can correct the existing slabs without removal in a short period. [Site Information] Soma Port Port Maintenance and Management Work (Quay Restoration) Construction Area: Approximately 285 square meters Maximum Subsidence: 97mm Construction Period: 4 days For detailed information on the construction process, please refer to the PDF download below.

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[Construction Case] Correction Work for Settlement of Logistics Warehouse - Step Adjustment

"Due to the formation of a step in the floor, a ramp was installed." "The floor has settled, causing cracks." Resolved with the up-construction method.

This time, we will introduce a construction case of a logistics warehouse in Niigata Prefecture. In this logistics warehouse, unevenness and cracks occurred in the floor slab due to ground subsidence, which hindered the movement of carts and operations. The Upcon method allows for construction to be carried out without stopping operations and within a short construction period. Additionally, during the polyurethane resin injection, a surveyor is present at all times to manage the floor level in millimeter increments, ensuring a high-quality finish. 【Site Information】 Niigata Prefecture / Logistics Warehouse Construction Area: 1,148 square meters Maximum Subsidence: 71mm Construction Period: 8 days

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

Using high-strength polyurethane resin, we will correct the deformations such as subsidence, steps, flapping, gaps, and voids 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 October 2014) quickly resolves issues such as settlement, step differences, flapping, gaps, and voids that occur in concrete pavement slabs commonly used in highways and other areas. It utilizes specially developed high-strength polyurethane resin, allowing for a swift solution without breaking existing pavement slabs or requiring excavation work, thus achieving a short construction period. This minimizes the downtime of the facility and has established a track record as a planned and efficient method for maintaining social infrastructure. This technology is also employed not only on highways but in repair work for ports and airport aprons, as well as disaster recovery projects. 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 the day of the event, we will also conduct a demonstration of settlement correction using polyurethane resin. We invite you to take this opportunity to see it. We look forward to your visit.

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Concrete floor slab settlement correction method "Upcon"

No need to remove cargo 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 sinking 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 voids occur 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.

Company：常盤工業建設事業部
Price：Other

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[Construction Example] Logistics Center: Outdoor Concrete Floor Settlement Correction / Underfloor Void Filling Work

Correction of the deflection in the slope section! A case where it was possible to adjust to a straight slope without any discomfort.

We would like to introduce a case of "outdoor floor subsidence correction" and "underfloor void filling work" carried out at a logistics center in Okayama Prefecture. The sloped area at the entrance of the building was sagging due to ground subsidence, so we adopted the Upcon method, which allows for quick correction of the sagging to avoid disrupting normal operations. After construction, we were able to almost eliminate the central sagging area and correct it to a straight slope without any discomfort. 【Case Overview】 ■ Construction Area: Approximately 410m2 ■ Maximum Subsidence: 93mm ■ Maximum Void: 150mm ■ Area: Logistics center located in Okayama Prefecture ■ Construction Period: 4 days *For more details, please refer to the PDF document or feel free to contact us.

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

No need to remove heavy racks or machinery! Here’s an example of a case that was corrected in just 4 days.

We would like to introduce a case of settlement correction implemented at a warehouse located in Fukushima Prefecture. Due to the impact of the Great East Japan Earthquake that occurred in 2011, gradual settlement progressed over the years, leading to the onset of floor sagging and tilting inside the warehouse. Inclination also developed in the areas where racks were installed. This caused issues such as the forklift forks not fitting properly, resulting in "longer loading and unloading times," which disrupted operations and caused difficulties. For this construction project, we adopted the Upcon method, which allows for construction without moving heavy racks within a short construction period. We were able to correct an area of approximately 1250m2 in just 4 days (with a maximum settlement amount of approximately 78mm). 【Case Overview】 ■ Construction Area: Approximately 1250m2 ■ Maximum Settlement Amount: 78mm ■ Location: Warehouse in Fukushima Prefecture ■ Construction Period: 4 days *For more details, please refer to the PDF document or feel free to contact us.

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Corrective Method - List of Manufacturers, Suppliers, Companies and Products

Corrective Method Product List

[Construction Case] Fukushima Prefecture, Soma Port Port Maintenance Management Work (Quay Restoration)

[Construction Case] Correction Work for Settlement of Logistics Warehouse - Step Adjustment

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

Concrete floor slab settlement correction method "Upcon"

[Construction Example] Logistics Center: Outdoor Concrete Floor Settlement Correction / Underfloor Void Filling Work

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