耐久性一般 (3)／耐火性

[V-481] Evaluation for fatigue properties of concrete slab after exposure fire

*小澤 満津雄¹、子田 康弘²、阿久津 裕亮¹、阪口 裕紀³ (1. 群馬大学大学院理工学府、2. 日本大学工学部、3. 丸栄コンクリート工業)

Keywords:Concrete slab, fire, fatigue

In this study, the fatigue properties of reinforced concrete slab exposed to fire was investigated. Normal strength concrete was used. The specimens were 800 mm long, 800 mm wide, and had a thickness of 100 mm. The characteristic compressive strength of the concrete was 18.7 MPa, and its Young’s modulus was 28.9 GPa. The reinforcement material type was SD295A; the sizes of the main reinforcement and distributing bars were D10 and D6, respectively. The heating curve of ISO834 was used.