Case Details
Long term use leads to:
*Arch rib cracking is common and severe (local water seepage).
*Local peeling and exposed reinforcement lead to overall stiffness degradation.
*Concrete has severe carbonation.
Advantages of basalt grid application：
*Fast mesh laying and mechanical spraying of bonding materials.
*Can be constructed in low temperature or humid environments.
*The reinforcement system is not affected by tunnel corrosion environment.
*Bilateral constraint peeling block.
