Subsidence correction method×アップコン - List of Manufacturers, Suppliers, Companies and Products

[Construction Example] Miyagi Prefecture Port Facility Quay Disaster Recovery Work

Harbor facility quay disaster recovery work

In 2021, the earthquake off the coast of Fukushima caused multiple ground fissures in the loading area and storage yard of the Hibari district in Ishinomaki and Shiogama ports. Traditionally, repairs for similar ground fissures involved open excavation down to the deepest part of the fissure, followed by repeated compaction to create a subgrade. However, this time there were several challenges, leading to the decision to explore methods that could fill the fissures without excavation and within a short construction period. Among these, the Upcon method was adopted as the most effective technique. 【Site Information】 Total construction length: 503 m Maximum depth of fissure: 2,400 mm Construction period: 5 days For detailed explanations and observations of the construction, please refer to the PDF download below.

Harbor Construction

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[Construction Example] Akita Prefecture Port Facility (RTG Running Path) Repair Work Settlement Correction

Port facility quay disaster recovery work

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 repair method. This time, we will introduce a case of subsidence correction work for the RTG (rubber-tired gantry crane) running path slab at a container terminal within a port. Over time, the RTG running path slab had subsided, causing a step to form in the adjacent vehicle running path. Additionally, unevenness occurred in the longitudinal direction, which affected the operation of the RTG and snow removal work. Compared to other methods, the Upcon method was chosen because it allows for construction without breaking the RTG running path slab and without halting operations during the short construction period. 【Site Information】 Construction Area: 258 square meters Maximum Correction Amount: 57 mm Construction Period: 6 days (nighttime) For detailed explanations and visuals of the construction, please refer to the PDF download below.

Harbor Construction

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Residential Upcon Method (Concrete Floor Slab Settlement Correction Method)

For foundation repair work on slab houses due to earthquakes and ground subsidence, leave it to Upcon!

Do you have any of these concerns? ✓ The house is leaning ✓ There are gaps in the windows and sliding doors ✓ The entrance and windows do not close properly ✓ There is an uncomfortable feeling when entering the room ✓ Doors open and close on their own ✓ Experiencing dizziness or headaches ✓ There are cracks or wrinkles in the wallpaper ✓ Balls roll on their own ✓ Water flow has become poor ✓ The water in the aquarium is not level With Upcon, we can quickly correct the tilt of your home! ■ Upcon Method (Concrete Floor Slab Settlement Correction Method) We inject special foam urethane resin under the concrete of the foundation of homes with tilt, correcting it in millimeter increments while continuously monitoring the level. The injected resin expands in a short time, compressing and reinforcing the ground while lifting the foundation to restore it to a straight position. We conduct surveys and construction anywhere in Japan, 365 days a year, including weekends and holidays. Our in-house staff, equipped with the necessary skills and qualifications, will assist you!

Renovation and repair methods

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Upcon Corporation Company Profile

Upcon is a company that solves problems with 'urethane.' We quickly correct floor sinking, unevenness, tilting, and gaps using rigid polyurethane resin.

Upcon quickly corrects concrete floors that have experienced sinking, unevenness, tilting, gaps, and vibrations due to ground subsidence or earthquakes, without stopping operations. We repair tilted concrete floors in factories, warehouses, and stores, which are the bases for corporate production and sales activities, as well as in general residences affected by earthquakes and ground subsidence. Additionally, we are engaged in public works using technologies developed through various research and development projects to restore the functionality of aging social infrastructure such as roads, airports, ports, and agricultural waterways. ■ Features of the Upcon Method 1. Short construction period: The construction time is one-tenth of conventional methods. 2. No operational stoppage: No need to move machinery or goods. 3. Comprehensive high technical capability: 100% in-house employees. 4. Compact construction system: Quick restoration of the current state is possible. 5. Reduced risk of re-sinking compared to conventional methods. We provide total support from on-site surveys to repair planning and construction, all managed responsibly by our in-house staff. Our specialized and experienced staff propose optimal repair plans tailored to the customer's site. Upcon Co., Ltd. was newly listed on the Nagoya Stock Exchange Next Market on December 26, 2022.

Renovation and repair methods

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[Factory/Warehouse] Upcon Method (Concrete Floor Slab Settlement Correction Method)

If you have tilting, steps, or gaps in factory or warehouse floors due to earthquakes or ground subsidence, then Upcon!

Do you have any of these concerns? ✓ Unable to secure the level of machinery ✓ Warehouse items are not stacked straight ✓ Uneven surfaces make it difficult for forklifts to operate ✓ Cracks have appeared in the floor ✓ Gaps have formed between the floor, walls, and ceiling ✓ Water is pooling due to floor sagging ✓ Insects have appeared inside the building We can solve these problems with Upcon! ■ Upcon Method (Concrete Floor Slab Settlement Correction Method) Concrete floors that have settled, become uneven, tilted, or developed gaps due to ground subsidence and other causes. The Upcon method corrects such floors quickly without stopping operations. Since it can be performed without breaking the existing floor, the construction period is significantly reduced to about 1/10 compared to traditional methods (concrete replacement). There is no need to remove items or machinery, or to install large plants, allowing for construction without halting operations. We conduct surveys and construction anywhere in Japan, 365 days a year, including weekends and holidays. Our in-house staff, equipped with the necessary skills and qualifications, will assist you! *For more details, please refer to the external link page or feel free to contact us.

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Correcting floor subsidence and tilt without stopping business operations!

Floor subsidence caused by earthquakes and ground subsidence. The specialist in subsidence correction, Upcon, will fix the existing floor without demolition and in a short construction period! Over 3,000 successful cases nationwide!

□ Store fixtures and product racks are tilted □ Shopping carts move on their own □ Luggage and products are not stacked straight □ Gaps have formed in the floor, walls, and ceiling □ Cracks have appeared in the floor The issues caused by floor subsidence, tilting, and unevenness will be resolved by "Subsidance Correction Specialist Upcon." With the Upcon method, polyurethane resin is injected under the existing concrete floor, and the pressure from the foam strengthens the ground and lifts the floor. In principle, there is no need to demolish the existing floor, and there is no need to move heavy product racks or store fixtures, significantly shortening the construction period compared to conventional methods. Additionally, we can accommodate construction limited to nighttime outside of business hours, allowing for the correction of floor subsidence without stopping operations.

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[Construction Case] Large Shopping Center: Correction of Sunken Floor Slab

Correction made during the night while operations were suspended! A case where two construction plant vehicles were used to expedite the construction schedule.

A large shopping center experienced significant floor subsidence due to weak ground. Gaps were observed in various places, such as between the floor and walls and between the walls and ceiling, caused by the floor subsidence. As a result, our company implemented repairs. The "Upcon Method," which can be executed at night during the business closure, was adopted for the repairs. To expedite the construction period, we utilized two construction plant vehicles and completed the repairs over 25 nights. 【Construction Overview】 ■ Construction Area: Approximately 3,240m2 (Backyard 405m2, Store Interior 2,835m2) ■ Maximum Subsidence: 94mm ■ Repairs completed over 25 nights ■ Two construction plant vehicles used to expedite the construction period For more details, please feel free to contact us via the PDF download or inquiry form.

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Quickly correct the factory floor's slope and the gaps under the floor with rigid polyurethane foam resin!

Correct the floor tilt caused by earthquakes or ground subsidence without stopping operations and in a short time! No need to move machines or equipment! Also suppress any concerning vibrations from the machines!

■ The level of the machine cannot be secured. ■ The machine is tilted and vibrating. ■ Malfunctions are occurring in the machine, leading to an increase in defective products. ■ Gaps have formed in the floor, walls, and ceiling. ■ Cracks have appeared in the floor. The "Upcon Method" uses polyurethane resin to quickly correct issues caused by tilting or sagging of the floor, as well as voids or gaps that have formed beneath the floor due to earthquakes or ground subsidence. 【What is the Upcon Method?】 Small holes with a diameter of 16mm are drilled into the existing concrete floor where subsidence has occurred. While continuously monitoring the level in millimeter increments, polyurethane resin is injected. The resin injected beneath the floor expands under pressure in a short time, compacting and reinforcing the ground, improving bearing capacity, and pushing the concrete back to a level position. The final strength of the resin is achieved in about 60 minutes. Additionally, if voids have formed beneath the floor, they are filled using the same method. By correcting the existing concrete floor without demolition, the construction period is significantly reduced compared to conventional methods. The polyurethane can lift the floor with a foaming pressure of up to 10 tons per square meter, eliminating the need to move heavy equipment or loads. The deformation of the floor is corrected without stopping the production line.

Renovation and repair methods
Vibration and Sound Level Meter
Vibration isolation, vibration control, and earthquake resistance construction

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Quickly correct floor tilts, unevenness, and gaps under the floor in warehouses and logistics centers!

Correcting the tilt of concrete floors caused by earthquakes and ground subsidence without stopping operations and within a short period! Solving warehouse floor issues with polyurethane resin!

■The cargo in the warehouse is not stacked straight. ■There are uneven surfaces that hinder the movement of forklifts. ■The racks and other equipment are tilted. ■The floor vibrates. ■Abnormal behavior is observed in the automatic racks. ■The transport robot has stopped. The "Upcon Method" quickly resolves issues caused by floor tilting and sagging due to earthquakes or ground subsidence, as well as voids and gaps that have formed beneath the floor, using polyurethane resin. 【What is the Upcon Method?】 Small holes with a diameter of 16mm are drilled into the existing concrete floor that has subsided, and while constantly monitoring the level in millimeter increments, polyurethane resin is injected. The resin injected beneath the floor expands under pressure in a short time, compacting and strengthening the ground, improving bearing capacity, and pushing up the concrete to correct it. The final strength of the resin is achieved in about 60 minutes. Additionally, if voids have formed beneath the floor, they are filled using the same method. Since the correction is made without demolishing the existing concrete floor, the construction period is significantly reduced compared to conventional methods. The polyurethane can lift the floor with a foaming pressure of up to 10 tons per square meter, eliminating the need to move heavy equipment or products. The floor deformation is corrected without stopping operations.

Foundation construction

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

Due to ground subsidence at the harbor's quay, there are steps and depressions in the concrete pavement, 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 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.

Harbor Construction

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[Construction Case] Filling Work for Void Under Concrete Pavement Slabs of Kanmon Tunnel

Fiscal Year 2013 Shimonoseki Area Preservation Work (Kanmon Tunnel Concrete Pavement Slab Void Filling Work)

The Kanmon Tunnel connecting Fukuoka Prefecture and Yamaguchi Prefecture. When large vehicles pass through the toll booth near the tunnel entrance and exit, vibrations were occurring in the nearby residential area. An investigation conducted by FWD revealed the presence of voids believed to be the cause of the vibrations directly beneath the concrete pavement slabs. The Upcon method is a technique that involves injecting rigid polyurethane resin beneath the concrete pavement slabs. The filling and compaction effects of the polyurethane can resolve the loosening and voids in the subgrade that cause vibrations. The Upcon method was adopted with the aim of suppressing slab vibrations by improving the environment of the upper subgrade. 【Site Information】 Fukuoka Prefecture - Yamaguchi Prefecture / Kanmon Tunnel Total construction area: Approximately 200 square meters Construction period: 2 nights

Road construction

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[Construction Case] Highway Toll Booth Concrete Pavement Leveling

Quickly repair the unevenness of the concrete pavement slabs at the highway toll booth.

A step in the concrete pavement caused by sinking. It affected vehicle movement when passing through the toll booth on the highway. We injected polyurethane resin under the sunken concrete pavement slab and corrected the 30mm step in a short time. 【Site Information】 Ehime Prefecture Total construction area: Approximately 12 square meters Construction period: One night Maximum step height: 30mm Please watch the fast-motion video showing the concrete pavement slab being lifted by the foaming pressure of the polyurethane resin from below.

Road construction

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"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.

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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[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.

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Subsidence correction method×アップコン - List of Manufacturers, Suppliers, Companies and Products

Subsidence correction method Product List