Concrete Journal
Online ISSN : 2186-2753
Print ISSN : 0387-1061
ISSN-L : 0387-1061
Search
Advanced search
OR
Browse
Search
Volume 30, Issue 9
Displaying 1-6 of 6 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • How New Zealanders Lead the Reinforced Concrete Beam
    Column Joint Dispute to a Closure
    Hiroyuki Aoyama
    1992 Volume 30 Issue 9 Pages 5-16
    Published: September 01, 1992
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.30.9_5
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    An international dispute broke out about 10 years ago among researchers and engineers in U. S. A., Japan and New Zealand about the seismic design of reinforced concrete beam-column joints. A trilateral cooperative research project was conducted, and concluded in 1991, in these countries in an attempt to bring the dispute to a closure. This paper reviews the background in three countries before the cooperative project, the contents and major conclusions of the project, and the directions in which the project results are reflected into building codes in these countries. In particular, the author emphasizes that the current research in reinforced concrete tends to change its style from empirical approach to rational approach, which became conspicuous in the works by New Zealanders.
    View full abstract
    Download PDF (1842K)
  • The State of the Art of Low-heat Cements
    Application to Anti-washout Underwater Concrete
    Ryota Okada, Toshio Sanbyakuda
    1992 Volume 30 Issue 9 Pages 17-26
    Published: September 01, 1992
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.30.9_17
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    In recent years there has been an increase in the number of cases in which anti-washout underwater concrete is used, and such concrete is now being applied to large-scale underwater structures. Use of low-heat cement in anti-washout underwater concretes will be effective in inhibiting thermal cracking of large-scale underwater structures. With the purpose of strictly suppressing thermal cracking more than previously, binary-system and ternary-system low-heat cements with large quantities of ground granulated blast-furnace slag and fly ash added have been newly developed and are being put to practical use. An explanation of outline of past research results concerning the influences of these cements on the various properties of anti-washout underwater concrete and examples of application to actual projects are described.
    View full abstract
    Download PDF (1143K)
  • Use of Super-Flowing Concrete in LNG Tank Dike
    Y. Nagatomo, T. Hirano, T. Kawaharada, T. Nagamatsu
    1992 Volume 30 Issue 9 Pages 27-36
    Published: September 01, 1992
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.30.9_27
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    Since the announcement of high-performance concrete several years ago, there has been considerable research and development into a practical concrete which combines the seemingly contradictory characteristics of flowability and component separation resistance, but does not require compaction. In the construction of the dike for the Oita LNG facility tanks, about 1000 m3 of super-flowing concrete was placed using local concrete plant. This paper discusses the labor-saving advantages and improved labor environment provided through the use of super-flowing concrete, the results of its application, and unresolved problems.
    View full abstract
    Download PDF (1463K)
  • Construction Record on an Office Building with a Composite Structure Composed of Precast Concrete Columns and Steel Beams
    S. Kobayakawa, A. Mikame, S. Kobayashi, Y. Komatsu
    1992 Volume 30 Issue 9 Pages 37-47
    Published: September 01, 1992
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.30.9_37
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    We have developed an industrialized method to construct an office building with a composite structure constituted of reinforced concrete columns and steel beams. Recently, this method was applied to the construction of a 4-storied office building. Known as the FSRPC method, it features a PC method in the aspect of building production technology on the one hand and has the advantage of a reinforced concrete structure and a steel structure in the aspect of structural planning, on the other. Before its field application, we established several assumptions such as work execution planning involving the manufacture, assembly and connection of members, and a quality control system, all of which are different from those by the ordinary precast concrete frame method (FRPC). This paper will describe several solutions which we provided to cope with the abovementioned tasks through the construction of the 4-storied office building, as well as the results.
    View full abstract
    Download PDF (2890K)
  • [title in Japanese]
    [in Japanese]
    1992 Volume 30 Issue 9 Pages 65-71
    Published: September 01, 1992
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.30.9_65
    JOURNAL FREE ACCESS
    Download PDF (1113K)
  • [title in Japanese]
    [in Japanese]
    1992 Volume 30 Issue 9 Pages 72-79
    Published: September 01, 1992
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.30.9_72
    JOURNAL FREE ACCESS
    Download PDF (1292K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top