耐久性一般 (1)

[V-198] Concrete strength of civil engineering facilities since the Meiji era

*Takaharu Shogaki¹, Yutaka Inaba², Chika Hayashi³, Ichirou Kuroda⁴ (1. shogaki consulting office, 2. metropolitan police department, 3. ground self defense , 4. national defense academy)

Keywords:Civil engineering historic site, Concrete strength, Rebound hammer test, Building structure