Concrete Journal
Online ISSN : 2186-2753
Print ISSN : 0387-1061
ISSN-L : 0387-1061
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Volume 36, Issue 10
Displaying 1-6 of 6 articles from this issue
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  • Progress of Hybrid Structures in Civil Engineering
    Shoji Ikeda
    1998 Volume 36 Issue 10 Pages 3-8
    Published: 1998
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.36.10_3
    JOURNAL FREE ACCESS
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    Hybrid structures generally consist of steel elements and concrete elements. However, carbon fiber sheets have become useful elements as new materials in addition to former two elements. The effects of hybridity are such as compensatien of characteristics, superposing, composite effect, advantage in erection, quick construction, adaptability in retrofit, etc. Big progress can be seen in the construction of bridges by applying hybrid structure. Especially, remarkable examples are prestressed concrete bridges having corrugated steel webs and bridges having steel elements in the central part of the main span to reduce dead weight. The potential effect of prestressing to the composite construction should be clearly recognized. The seismic retrofit of concrete piers by using carbon fiber sheets has been realized in long span bridge structures.
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  • The Outline of Recommendation for Self-Compacting Concrete
    T. Uomoto, K. Ozawa, T. Kawai, T. Watanabe
    1998 Volume 36 Issue 10 Pages 9-17
    Published: 1998
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.36.10_9
    JOURNAL FREE ACCESS
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    This paper describes the outline of Recommendation for Self-compacting Concrete published by Japan Society of Civil Engineers in July 1998. Performance-based style is applied to this Recommendation associated with Manuals for Mixture Proportioning and for Manufacuring and Placement of self-compacting concrete. In this recommendation, required self-compactability is established and methods of verification and inspection for its self-compactability are described. Practical mixture proportioning method including material selection, and recommended practice of manufacuring and placing self-compacting concrete are described in each Manual.
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  • Recent Problems on the Concrete
    What Should be Noted toward the Next Millenium
    Hiroshi Muguruma
    1998 Volume 36 Issue 10 Pages 18-25
    Published: 1998
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.36.10_18
    JOURNAL FREE ACCESS
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    Concrete Technology and engineering have been rapidly developed in recent years and such development has led to significant advancement in engineering skills and remarkable diversification of concrete. To understand these advanced concrete technology essentially, it is very important to know the fundamentals of concrete technology. The aim of this paper is to make those bases comprehensible to concrete engineers by describing (1) what is good uniform-concrete, (2) why specification of ready-mixed concrete should be revised fundamentally, (3) what are the major points for quality control of concrete and (4) what are the important factors to produce high-strength concrete.
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese], [in Japanese]
    1998 Volume 36 Issue 10 Pages 26-30
    Published: 1998
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.36.10_26
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese], [in Japanese]
    1998 Volume 36 Issue 10 Pages 31-35
    Published: 1998
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.36.10_31
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese], [in Japanese]
    1998 Volume 36 Issue 10 Pages 36-40
    Published: 1998
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.36.10_36
    JOURNAL FREE ACCESS
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