[Construction Case] Miyagi Prefecture Onagawa Fishing Port Miyagasaki Wharf Disaster Recovery Work

basic information

■ What is the Upcon Method? The Upcon method involves drilling small holes with a diameter of 16mm into concrete pavement slabs that have experienced sinking, unevenness, tilting, or gaps. While continuously monitoring the level in millimeter increments, polyurethane resin is injected. The resin injected beneath the slab immediately expands due to a chemical reaction, compacting and strengthening the ground, which improves the bearing capacity and lifts the concrete slab back into position with the pressure from the expansion. The required strength is achieved in about 120 minutes, significantly contributing to a shorter construction period. Additionally, if there are gaps beneath the concrete pavement slab, the material can expand and fill even the smallest spaces, ensuring complete filling without voids. ■ Features of the Upcon Method 1. Short construction period: The construction time is one-tenth that of conventional methods. 2. No need to stop operations: Heavy equipment or material relocation is unnecessary. 3. Comprehensive high technical capability: 100% in-house staff. 4. Compact construction system: Quick restoration to the original condition is possible. 5. Reduced risk of re-sinking compared to conventional methods. We provide total support, including on-site surveys, repair planning, and construction, with our in-house staff taking full responsibility. Our specialized and experienced staff, trained in the field, will propose the optimal repair plan tailored to your site.

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Applications/Examples of results

Concrete pavement slab settlement correction work