[Construction Case] Correction Work for Subsidence of Logistics Warehouse - Leveling Adjustment
"A slope was installed due to the formation of a step in the floor." "The floor has sunk, 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, ground subsidence caused unevenness and cracks in the concrete floor, which hindered the movement of carts and work operations. The Upcon method allows for construction to be carried out without stopping operations and within a short construction period. Additionally, during the injection of polyurethane resin, a surveyor is always present to manage the floor level to the millimeter, 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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basic information
■ What is the Upcon Method? The Upcon method involves drilling small holes with a diameter of 16mm into existing concrete floors that have experienced subsidence, unevenness, tilting, or gaps. While continuously monitoring the level in millimeter increments, polyurethane resin is injected. The resin injected beneath the floor expands rapidly under pressure, compacting and reinforcing the ground, improving the bearing capacity, and lifting the concrete back into position. The final strength of the resin is achieved in about 60 minutes. Additionally, if gaps have formed beneath the floor, they can be filled using the same method. *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 goods. ■ Features of the Upcon Method 1. Short construction period: The construction time is one-tenth that of conventional methods. 2. No interruption of operations: There is no need to move rack equipment or products. 3. Comprehensive high technical capability: Responsible construction by 100% in-house staff. 4. Compact construction system: Quick restoration of the current state is possible. 5. Reduced risk of re-subsidence compared to conventional methods. We provide total support for on-site surveys, repair planning, and construction, all handled responsibly by our in-house staff. Our specialized and experienced staff will propose the optimal repair plan tailored to your site.
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Applications/Examples of results
■Ground floor sinking correction work ■Ground floor void filling work
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Company information
We carry out construction to correct the sinking, tilting, steps, and gaps in concrete floors caused by uneven ground subsidence in buildings such as factories, warehouses, stores, and general residences, using our unique "Upcon Method" with completely non-fluorinated urethane resin and small machinery. Additionally, we are engaged in public works that utilize 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 1/10 of conventional methods. 2. No interruption of operations: No need to move machinery or cargo. 3. Comprehensive high technical capability: 100% in-house employees. 4. Compact construction system: Quick restoration to the current state is possible. 5. Reduced risk of re-subsidence: Lower risk of re-subsidence compared to conventional methods. Our in-house staff provides total support from on-site surveys across the country to repair planning and construction, taking full responsibility. Our specialized and experienced in-house staff will propose the optimal repair plan tailored to your site. Upcon Co., Ltd. was newly listed on the Nagoya Stock Exchange Next Market on December 26, 2022.