EVALUATION OF THE REACTIVITY OF FLY ASH BY PARTICLE ANALYSIS

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Other Title
  • 粒子解析によるフライアッシュの反応性評価

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Description

The reactivity of thirteen different types of fly ash with a wide variety of quality was studied by automated particle analysis using FE-SEM/EDS. The particle analysis revealed that most of the FA used in this study is composed of two types of particles. One is a mixed particle of mullite and glass phase（mullite＋G）, while the other is a particle formed from an Al2O3-SiO2 glass system（AS）. By comparing the M value of each FA, which was derived from its chemical composition using M＝（CaO＋MgO＋R2O）/SiO2, it was found that the reactivity of AS is higher than that of mullite＋G, and that the reactivity of mullite＋G becomes higher with decreasing diameters of the particle. Accordingly, the activity index of FA is influenced by the reactivity of highly reactive particles such as mullite＋G and AS as well as specific areas and volume fractions.

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Details 詳細情報について

  • CRID
    1390001204829033984
  • NII Article ID
    130005129343
  • DOI
    10.14250/cement.68.61
  • ISSN
    21873313
    09163182
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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