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Effects of surface washing on the mitigation of concrete corrosion under sewer conditions

Journal Article


Abstract


  • This study systematically investigated the potential of mitigating sulfide induced sewer concrete

    corrosion by surface washing. Washing interrupted the corrosion activity of concrete coupons by

    increasing the surface pH and decreasing the H2S uptake rates (SUR). The SUR recovered to the level

    prior to washing within 60e 140 days. The slowest recovery rate was from the most severely corroded coupon.

    However, no significant difference was observed for concrete mass loss of the washed and unwashed

    coupons after 54 months. The results suggest that frequent washing at short intervals of a few months

    might be needed to control corrosion over a long term.

UOW Authors


  •   Sun, Xiaoyan (external author)
  •   Jiang, Guangming
  •   Chiu, Tsz Ho. (external author)
  •   Zhou, Mi (external author)
  •   Keller, Jurg (external author)
  •   Bond, Philip (external author)

Publication Date


  • 2016

Citation


  • Sun, X., Jiang, G., Chiu, T. Ho., Zhou, M., Keller, J. & Bond, P. L. (2016). Effects of surface washing on the mitigation of concrete corrosion under sewer conditions. Cement and Concrete Composites, 68 88-95.

Scopus Eid


  • 2-s2.0-84959341515

Number Of Pages


  • 7

Start Page


  • 88

End Page


  • 95

Volume


  • 68

Place Of Publication


  • United Kingdom

Abstract


  • This study systematically investigated the potential of mitigating sulfide induced sewer concrete

    corrosion by surface washing. Washing interrupted the corrosion activity of concrete coupons by

    increasing the surface pH and decreasing the H2S uptake rates (SUR). The SUR recovered to the level

    prior to washing within 60e 140 days. The slowest recovery rate was from the most severely corroded coupon.

    However, no significant difference was observed for concrete mass loss of the washed and unwashed

    coupons after 54 months. The results suggest that frequent washing at short intervals of a few months

    might be needed to control corrosion over a long term.

UOW Authors


  •   Sun, Xiaoyan (external author)
  •   Jiang, Guangming
  •   Chiu, Tsz Ho. (external author)
  •   Zhou, Mi (external author)
  •   Keller, Jurg (external author)
  •   Bond, Philip (external author)

Publication Date


  • 2016

Citation


  • Sun, X., Jiang, G., Chiu, T. Ho., Zhou, M., Keller, J. & Bond, P. L. (2016). Effects of surface washing on the mitigation of concrete corrosion under sewer conditions. Cement and Concrete Composites, 68 88-95.

Scopus Eid


  • 2-s2.0-84959341515

Number Of Pages


  • 7

Start Page


  • 88

End Page


  • 95

Volume


  • 68

Place Of Publication


  • United Kingdom