Study regarding a penetration of chloride at the inner/outer surface of the box type tunnel for subway(phase2)

10:30 AM - 10:40 AM

[V-165] Study regarding a penetration of chloride at the inner/outer surface of the box type tunnel for subway(phase2)

*sadayuki watanabe¹, kouhei koshiba², souta terashima¹, yoshio sekiguchi¹ (1. Metro Rail Facilities Co.,Ltd., 2. Tokyo Metro Co.,Ltd.)

Keywords: Box type tunnel, Chloride ion concentration, neutralization, Pore diameter distribution, Water absorption rate

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