繊維補強吹付けモルタルによるトンネル覆工の薄肉補修工法の一提案

抄録

The tunnel repairment method with high-strength mortal rainforced by FRP will be able to apply economically for the old cracked tunnel lining. However, before the application, the several mechanical tests should be demanded for the compound structure, consist of old concrete and new sprayed mortal. This report is aimed to clean the shearing or bending strength as well as the binding strength between both materials, by loading tests with manufactured test pieces. Conclusivelly, the sprayed mortal with long carbon fiber reinforcement appeared expected effects in amending against bending stress and bending toughness.