Concrete Journal
Online ISSN : 2186-2753
Print ISSN : 0387-1061
ISSN-L : 0387-1061
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Volume 36, Issue 12
Displaying 1-5 of 5 articles from this issue
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  • High Strength Artificial Aggregate Using Coal-Ash as Raw Material
    Tokuaki Sone
    1998 Volume 36 Issue 12 Pages 3-10
    Published: December 01, 1998
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.36.12_3
    JOURNAL FREE ACCESS
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    Artificial aggregates with coal ash as the raw material available from the past have all been foamed-type and of light weight. Recently, however, a high-strength artificial coarse aggregate using coal ash as the main ingredient which, differing from foamed-type aggregate, is of oven-dry specific gravity around 2.0 through densification of aggregate texture, can achieve concrete of high strength and light weight, has been developed. The method of manufacturing this high-strength artificial aggregate, the basic properties of the aggregate and concrete using it, the characteristics of high-strength and high-fluidity concrete containing this aggregate, and its application to structural members are reported in this paper.
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  • Utilization of Electric Arc Furnace Oxidizing Slag as Concrete Aggregates
    K. Iwanaga, E. Fuchigami, S. Matsuoka, H. Shimazu
    1998 Volume 36 Issue 12 Pages 11-17
    Published: December 01, 1998
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.36.12_11
    JOURNAL FREE ACCESS
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    Japan Iron and Steel Federation has been carrying out a series of study to utilize electric arc furnace oxidizing slag, which is produced as a by-product from steel-making process, as concrete aggregate. The possibility of utilization of slag has been recognized, because satisfactory results were obtained in the physical and chemical tests for the evaluation of aggregate. In order to take the advantages of characteristics of electric arc furnace oxidizing slag with high density and high hardness, actual size wave dissipating concrete blocks were made for strength and durability tests. The possibility to use it as heavy weight aggregate for heavy weight concrete has also been confirmed.
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese], [in Japanese]
    1998 Volume 36 Issue 12 Pages 19-23
    Published: December 01, 1998
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.36.12_19
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese]
    1998 Volume 36 Issue 12 Pages 24-28
    Published: December 01, 1998
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.36.12_24
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese], [in Japanese]
    1998 Volume 36 Issue 12 Pages 30-34
    Published: December 01, 1998
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.36.12_30
    JOURNAL FREE ACCESS
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