塩害(2)／凍害(1)

[V-553] Suggestion of the repair measures method of construction based on the bridge lower part mechanic details findings

〇FUKUDA KOJIRO¹, HARA RYOHEI² (1.NEXCO ENGINEERING HOKKAIDO, 2.East Nippon Expressway Company)

Keywords:Chloride attack, spontaneous-potential, Chloride ion of concrete structure, Diffusion prediction, Repair measures method of construction

The appearance visual survey by bridge lower part mechanic where damage from salt breeze produced the purpose of the study and natural electrometry, chloride ion concentration are examination, the suggestion of the repair measures method of construction based on the details findings. As the point, I chose a salt collection point from the appearance findings such as a float or the leak of water trace, a natural electrometry result and decided section repair depth by the diffusion prediction of the chloride ion. Based on the above, I reported a repair measures method of construction based on the detailed findings.