Decrease of Accumulating Salt on a Bridge due to Rinsing with Dew

• Takebe Masamichi

  Matsue National College of Technology

• Ohya Makoto

  Matsue National College of Technology

• Adachi Ryo

  Advanced Engineering Faculty, Matsue National College of Technology

• Ajiki Shota

  Izucon Co. Ltd.

• Ota Jun-ya

  Advanced Engineering Faculty, Matsue National College of Technology

• Gan-ei Rumiko

  West Japan Railway Company

• Kitagawa Naoki

  Advanced Engineering Faculty, Matsue National College of Technology

• Furukawa Takashi

  Furukawa consultant

• Matsuzaki Yasuhiko

  WESCO Inc.

• Aso Toshihiko

  Graduate School of Science and Engineering, Yamaguchi University

Bibliographic Information

Other Title

• 橋梁桁内の付着イオンの露による洗い流し効果について
• キョウリョウ ケタナイ ノ フチャク イオン ノ ツユ ニ ヨル アライナガシ コウカ ニ ツイテ

Abstract

In order to discuss the behavior of accumulating ions on inside-ward surface of a girder of the bridge, composition of accumulating ions on the girder are examined. Abundance of accumulating ions are high in winter and spring, and low in summer and autumn. The fluctuation of the abundance is associated with the quantities of air born salt in each season. The abundances of Na⁺ and Cl^– on the inside-ward surface of girder decrease during days with a hard rain and high humidity. While the inside-ward surface of the girder can not be washed by rain, many traces of dew can be found on the girder. Therefore, the decrease of Na⁺ and Cl^– on the girder is considered to result from that accumulating NaCl with high solubility are partly wash out by dew. Hence, chemical composition of salts on girders is influenced not only by the quantities of air born salts, but also by the quantities washed out by dew. As a result, the abundances of ions on girders are not proportional to length of period that ions have accumulated.

Journal

• Zairyo-to-Kankyo

  Zairyo-to-Kankyo 57 (4), 188-193, 2008

  Japan Society of Corrosion Engineering

Keywords

• weathering steel bridge
• composition of salts on a girder
• dew
• behavior of accumulating ions

Details

• CRID: 1390001206258937344
• NII Article ID: 10021170691
• NII Book ID: AN10235427
• DOI: 10.3323/jcorr.57.188
• ISSN: 18819664
• ISSN: 09170480
• NDL BIB ID: 9471717
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9471717
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed