橋梁 (2)

[VI-373] Report for the high durability RC floor slab of Shin-yanagibuchi Bridge Part 2 (construction site)

*小倉 仁志¹、串田 雅宏¹、三井 功如¹、阿波 稔²、迫井 裕樹²、小岩 孝行³、川村 英弘³、舩木 仁³ (1. 西松建設、2. 八戸工業大学、3. 国土交通省東北地方整備局三陸国道事務所)

Keywords:high durable RC slab, on-site construction, concrete quality control test, concrete placing, concrete compaction, concrete curing

Report for the high durability RC floor slab of Shin-yanagibuchi Bridge Part 2 (construction site)Shin-yanagibuchi Bridge is that crosses Route 45 and the Fudai River. The freeze damage category in the area is "Type A", but there is concern about the decrease in air content due to concrete pumping height of more than 20 m and combined deterioration (freeze damage, salt damage, ASR, fatigue) of concrete slab. Therefore, concrete mix proportion equivalent to freeze damage category "Type S" was adopted. In this paper, we report on-site construction considering winter concrete curing.