Development of a half-width construction method for bridge deck replacement
First written in FY2016. 2 of 3 entries say "Advanced", first in FY2018. Latest entry: FY2026.
2 other companies' latest entry also says "Advanced".
- FY2026AdvancedAnnual report
「For replacement precast PC bridge decks, we developed the S-MuSSL method, which reduces the joint width to approximately one-quarter of that used in the conventional MuSSL method by placing S-DUCCS, a high-strength, fiber-reinforced mortar developed by the company that cures at ambient temperature, at the joints between precast PC bridge decks. Construction is scheduled at a site in Okayama Prefecture in fiscal 2026.」
The bridge deck renewal method has evolved into the S-MuSSL method, reducing the joint width to approximately one-quarter of that of the conventional method, with on-site construction scheduled for fiscal 2026. - FY2018AdvancedAnnual report
「Because this type of structure is required to undergo a wheel-load running test confirming performance equivalent to a 100-year service life, we conducted the test in the previous fiscal year and confirmed the required performance. Based on these results, the method is being applied to actual construction on the Chugoku Expressway in the current fiscal year, and application on the Tomei Expressway is also planned.」
For the MuSSL method for bridge deck replacement, performance equivalent to a 100-year service life has been confirmed. The method has been applied to actual construction on the Chugoku Expressway, and application on the Tomei Expressway is planned. - FY2016First statedAnnual report
「To minimize the risks associated with traffic restrictions, we developed a half-width deck replacement method. As a result, the method was adopted for the deck replacement work on the outbound lane of the Doyatani No. 2 Bridge on the Chugoku Expressway, a designated renewal project, and we are currently carrying out the construction.」
To address demand for bridge renewal, the company developed a method that limits the impact of traffic restrictions and has adopted and implemented it on a specific project.