Concrete Journal
Online ISSN : 2186-2753
Print ISSN : 0387-1061
ISSN-L : 0387-1061
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Volume 37, Issue 4
Displaying 1-7 of 7 articles from this issue
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  • State of the Art Report on Transport Mechanisms and Characteristics in Concrete
    Yasuhiko Furusawa
    1999 Volume 37 Issue 4 Pages 3-11
    Published: April 01, 1999
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.37.4_3
    JOURNAL FREE ACCESS
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    A state of the art report on the studies performed to understand transportation mechanisms and characteristics of species (water, ions and gasses) which possibly move into and move out from concrete has been shown. These studies have attracted considerable interest with respect to long term performance and durability of concrete, and would contribute to development of comprehensive material design and inspection methods for concrete structures. Both experimental and analytical attempts to establish the model to describe and predict the transport properties have been mainly introduced.
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  • High Performance Lightweight Concrete
    T. Okamoto, Y. Ishikawa, T. Tochigi, M. Sasajima
    1999 Volume 37 Issue 4 Pages 12-18
    Published: April 01, 1999
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.37.4_12
    JOURNAL FREE ACCESS
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    The new artificial lightweight aggregate, of which has both higher strength and lower water absorption than the ordinary lightweight aggregates, has been developed recently. And high performance lightweight concrete using this aggregate can obtain lightweight, stronger compressive strength, greater durability and easier handling than those of conventional lightweight concrete. The manufacturing method and basic properties of the new type of the artificial lightweight aggregate, fresh and mechanical behavior and the application to structural component of high performance lightweight concrete using this aggregate are reported in this paper.
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  • Fiber Reinforced Concrete
    S. Matsuoka, H. Horii
    1999 Volume 37 Issue 4 Pages 19-24
    Published: April 01, 1999
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.37.4_19
    JOURNAL FREE ACCESS
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    In short fiber reinforced concrete, tensile stresses are transmitted in crack faces because of the bridging effect of fibers, thereby offering a higher ductility of concrete. The tensile failure characteristic, discussed in this paper, is therefore a key parameter when evaluating the properties of short fiber reinforced concrete. In addition, new application techniques of short fibers are presented here for enhancing the shear strength and seismic performance of concrete structures. These techniques resort to satisfactory crack dispersing and increased energy absorbing capabilities provided by the bridging effect of fibers.
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  • State-of-the-art and Construction for Concrete Filled Steel Tube (CFT) Structures
    Ikuo Yamaguchi, Hiroki Ueda, Terutaki Imamura, Tadashiko Suzuki
    1999 Volume 37 Issue 4 Pages 25-31
    Published: April 01, 1999
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.37.4_25
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    CFT is an excellent structural member in performance of structures and fire resistance. CFT is described in the [Standard for Structural Calculation of Steel Reinforced Concrete Stuctures ; AIJ] etc.. However, strength of concrete portion is not expected even if the design is followed by general procedure due to recent rasearches, that is, the assurance of filled up of concrete in a tube, and the development of concrete strength, ANUHT has performed sufficient experiments of structures, fire resistance and construction utilizing high strength materials. And ANUHT has summarized the design procedure considering synergistic effect and reliable construction procedure in the [Standard for CFT structures]. Concept of this standard, it's distinctive feature/effect, construction planning, and current application to the actual structures are presented in this report.
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  • The Recent Used Style of The Steel Fiber Concrete for The Overlay Method of RC Deck Slabs
    T. Itou, T. Fukuti, A. Kisida, K. Igosi
    1999 Volume 37 Issue 4 Pages 32-37
    Published: April 01, 1999
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.37.4_32
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    The overlay method has been adopted to reinforce the damaged RC deck slabs of bridges. Kinki Structural Division of Construction Ministry has improved the method that can be applied for small and middle size bridges with different spans, and recently decided to publish the results as a manual for the method. In the overlay method, the long size steel fiber reinforced concrete with the use of ultra-rapid-hardening cement has been decided to be used in the method of both mechanical and man-power construction. We are reporting about the basic theory of the foundation.
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese], [in Japanese]
    1999 Volume 37 Issue 4 Pages 39-44
    Published: April 01, 1999
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.37.4_39
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese], [in Japanese]
    1999 Volume 37 Issue 4 Pages 45-50
    Published: April 01, 1999
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.37.4_45
    JOURNAL FREE ACCESS
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