![[Construction Case] Joban Expressway Nagareyama IC Restoration and Repair Work - Settlement Correction Work](https://image.www.ipros.com/public/product/image/0f7/2000816615/IPROS34112890785189749398.jpeg?w=280&h=280)
[Construction Case] Joban Expressway Nagareyama IC Restoration and Repair Work - Settlement Correction Work
Heisei 25 Fiscal Year Joban Expressway Nagareyama IC Restoration and Repair Work
The expressways that suffered tremendous damage due to the Great East Japan Earthquake. On the Tohoku Expressway, there were 347 km of damage, and on the Joban Expressway, 153 km, with collapses and uneven road surfaces occurring at four interchanges. Upcon is conducting corrections for the sinking of concrete slabs on roads and airport aprons. Full-scale restoration work began the year after the earthquake, and our technology, which allows for corrections without breaking existing slabs and within a short construction period, was adopted for the restoration work. This time, we will introduce a case of disaster recovery work for concrete pavement slabs at the Nagareyama tollgate, commissioned by East Nippon Expressway Company. Due to the sinking of the concrete pavement slabs, the water gradient could not be maintained, resulting in puddles forming in front of the ETC sensors. Every time a vehicle passed, water splashed, causing malfunctions in the sensors. We carried out sinking correction work using the Upcon method and restored the water gradient within a short construction period. 【Site Information】 Chiba Prefecture / Nagareyama IC Total construction area: 875 square meters Construction period: 8 nights
![[Construction Case] Disaster Recovery Concrete Pavement Slab Settlement Correction Work](https://image.www.ipros.com/public/product/image/d15/2001214118/IPROS90005005115896344748.png?w=280&h=280)
