維持・管理／検査技術・診断 (12)

[VI-762] Consideration about concrete condition for expressway tunnel lining

*笹本 直之¹、渡邉 太一郎²、大窪 克己¹、平野 紘司¹ (1. 中日本ハイウェイ・エンジニアリング東京、2. 中日本高速道路)

Keywords:tunnel, concrete cracks , Fiber Reinforced Concrete, Relative humidity, drying shrinkage, highway maintenance

For concrete cracks of tunnel lining on the Shin-Tomei Expressway, comparison of initial inspection before opening and initial inspection five years after opening from differences in a type of concrete fiber and inside of the tunnel environment