収縮・クリープ

[1072] NUMERICAL SIMULATION OF THERMAL STRESS IN HIGHLY DURABLE RC SLAB ON PC COMPOSITE GIRDER BRIDGE

Arifa ZERIN¹, 細田暁², 小松怜史², 永田伸幸³ (1.Yokohama National University 2.横浜国立大学 3.IHIインフラ建設)

キーワード：Autogenous Shrinkage, Blast Furnace Slag Cement, Expansive Strain, FEM Simulation, FEM解析, 膨張ひずみ, 自己収縮, 高炉セメント

A multiple protection highly durable concrete with blast furnace slag cement and expansive additive was applied in RC deck slab construction of Hikohei post tensioned bridge to mitigate deterioration and early age cracking risk of the restrained concrete slab. The present study has accurately simulated the early age volume changes of Hikohei bridge slab using 3D FEM model and conducted parametric studies utilizing the model in evaluating the effect of expansive additive, autogenous shrinkage and coefficient of thermal expansion on the risk of early age cracks in deck slabs.