素地調整が異なる塗装鋼板の腐食劣化に関する基礎的研究  [in Japanese] CORROSION DETERIORATION OF PAINTED STEELS WITH DIFFERENT SURFACE PREPARATIONS OF STEEL SUBSTRATES  [in Japanese]

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Abstract

本研究では、4種類の素地調整が異なる塗装鋼板を用いて251日間の促進腐食実験を行った。この実験では、裸鋼板の表面に層状さびを発生させた鋼板を用いて、さびを1)完全に除去、2)中程度除去、3)無除去の処理後、塗装を施した3種類の供試体を用いた。また、ブラスト処理の無腐食鋼板に塗装した新規塗装の供試体も比較のため用いた。塗装一般部、クロスカット部、および塗装と素地露出部との境界部などに生じた塗膜のふくれ面積および板厚減少量などを用いて素地調整の程度が塗装鋼板の腐食劣化特性に及ぼす影響を明らかにし、橋梁メンテナンスのライフサイクルアナリシスの基礎データを提供した。This study examined corrosion characteristics and durability of painted steels with different surface preparations of steel substrates through accelerated exposure tests. Steel plates were fabricated with structural steels for twelve specimens and weathering steel plates for twelve specimens conforming to JIS SM490A and SMA490AW, respectively. Nine of the twelve plates in each group were pre-corroded in the accelerated exposure test equipment for S6-120 cycles (30 days), and then the surface treatment of the pre-corroded specimens was conducted by a grinder in three ways, i.e. complete rust removal, slight rust removal, and no rust removal in each for three corroded specimens. Non-corroded steel plates were grit-blasted before coating. Based on C-3 or C-4 painting systems, the coating of all the plates was performed. The accelerated exposure tests of the painted specimens were continued for S6-1000 cycles (251 days). From the test results, the effect of different surface preparations degree on corrosion deterioration of the painted steels was clarified.

Journal

  • 土木学会論文集 = Proceedings of JSCE

    土木学会論文集 = Proceedings of JSCE (766), 291-307, 2004-07-21

    土木学会

References:  22

Cited by:  1

Codes

  • NII Article ID (NAID)
    10012801458
  • NII NACSIS-CAT ID (NCID)
    AN10014020
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    02897806
  • NDL Article ID
    7052438
  • NDL Source Classification
    ZN1(科学技術--建設工学・建設業)
  • NDL Call No.
    Z16-6
  • Data Source
    CJP  CJPref  NDL  IR 
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