維持管理(耐候性鋼)(1)

[I-02] 10-year exposure test evaluation results in actual bridge environment

〇Fumio YUSE¹, Yusuke MIURA¹, Masahiro MATSUSHITA¹, Kuniaki Minami², Hideki YOKOYAMA² (1.KOBE STEEL, LTD., 2.JRTT)

Keywords:weathering steel, Bridge, nickel-based weathering steel, corrosion prediction, thickness loss, corrosion resistance

10-year exposure test evaluation results in actual bridge environment
Exposure tests with small specimens were carried out in three places for 10 years in a real environment of nickel high weathering steel. From the results, the long-term corrosion amount was estimated. In each of the bridges, the effect of the added component appeared, and the estimated reduction in thickness after 100 years was less than 0.5 mm, confirming good corrosion resistance.