EXPERIMENTAL STUDY ON ALKALI DIFFUSION BEHAVIOR FROM STEEL SLAG PRODUCTS IN STEADY SEAWATER FLOW

DOI 7 Citations

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Other Title
  • 海域における鉄鋼スラグ製品からのアルカリ溶出に関する大規模水槽実験

Abstract

 In order to utilize the products made of converter steel-making slag in marine area, knowing the leaching behavior of alkali substances and the pH rising of seawater is necessary. Most of the reported experiments for this purpose have been performed in closed system using such as a cylindrical container, but pH change under water flow in opened system is important. In this study, the experiments using large scale flume (L=6.5 m, W=0.5 m, H=1.2 m) with artificial seawater flow were performed. Five kinds of samples, 1) three kinds of steel-making slag of which particle size is 0 - 30 mm, 15 - 30 mm, 30 - 85 mm respectively, 2) artificial stone, which is solidified steel-making slag with hydration reaction, and 3) reformed soil, which is dredged soil mixed with converter steel-making slag, were used. pH values of the seawater sampled from 40 parts of the flume simultaneously were determined, and pH distribution maps were drawn with time. pH rising of the seawater for steel-making slag were 0.16 - 0.35, and slag with different particle diameter showed different behavior. On the other hand, pH rising of the seawater for artificial stone and reformed soil were within 0.04.

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Details 詳細情報について

  • CRID
    1390001205352024832
  • NII Article ID
    130004961659
  • DOI
    10.2208/jscejoe.69.i_1042
  • ISSN
    21854688
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
    • KAKEN
  • Abstract License Flag
    Disallowed

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