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Abstract: In this study, we sprayed a fiber blended drymix mortar, and a concrete with powdered or liquid accelerator to a rough plate of granite mounted on a punching experimental equipment. Those strength and deformation were measured and compared by its equipment with a three-dimensional laser scanner. As a result, the redundancy of the fiber blended drymix mortar sprayed was superior to that of the...
Abstract: Segmented tunnels are designed to take into account the nearly isotropic pressure from the ground excavated by the TBM. However, the tail of the TBM pressurizing the segmental ring during TBM advance can create additional loads that can cause segments damage and collapse of the entire structure. Therefore, it is necessary to design safe segments according to various conditions. In this study, a...