Hydration Properties of Shotcrete with an Accelerator Based on Calcium Aluminate

by Satoru Hirose, Nihon Cement Co Ltd, Tokyo, Japan,
Yukinori Yamazaki, Nihon Cement Co Ltd, Tokyo, Japan,

Document Type: Proceeding Paper

Part of: Shotcrete for Underground Support VI


A new powder-type accelerator based on calcium aluminate has been used for shotcrete in underground construction. This accelerator can be applied to all types of shotcreting. The shotcrete with this accelerator shows excellent adhesion to the surface of tunnel by quick setting according to the hydration of calcium aluminate, and develops its strength successfully.

Subject Headings: Underground construction | Shotcrete | Hydration | Calcium | Underground structures | Tunnels | Surface properties | Japan | Asia

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