Kumagai Gumi (1861) · InitiativeFirst stated

FC Liner method: mortar spraying system for reinforcing and renovating small-section tunnels

First written in FY2023. . Latest entry: FY2023.

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Quality, safety and labor-saving technologies for tunnel and shield constructionA theme 10 companies write about · 0 as a headwind · 42 as a tailwind

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Full recordFilings, disclosures and news, newest first

FY2023First statedAnnual report
「Under this method, newly developed ultra-rapid-hardening cement-based premixed FC Mortar can be continuously supplied with water, mixed and pumped simply by feeding it into a high-performance compact mixing pump. The system is designed so that all these operations can be completed at the work location inside the tunnel.」
The Company developed a mortar-spraying system that completes water addition, mixing and pumping inside the tunnel as a countermeasure against spalling in small-section tunnels. It has accumulated construction experience in waterway tunnels, disaster recovery and emergency works and established an external-sales model for materials and equipment leasing through Group companies.

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