Concrete Journal
Online ISSN : 2186-2753
Print ISSN : 0387-1061
ISSN-L : 0387-1061
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Volume 19, Issue 9
Displaying 1-6 of 6 articles from this issue
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  • THE STATE OF THE ART OF THE STUDIES ON THE REINFORCED CONCRETE BEAM TO COLUMN JOINT
    Koichiro Ogura, Masataka Sekine
    1981 Volume 19 Issue 9 Pages 3-15
    Published: September 15, 1981
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.19.9_3
    JOURNAL FREE ACCESS
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    This roport reviews the studies on the beam to column joint in monolithic reinforced concrete frame structures, which were performed in Japan, partly making references to some foreign studies. Four points are contained,(1) chronological review of joint studies in Japan, (2) review on the structural behavior of joint; stress distribution at joint, effect of several factors on the shear cracking stress and ultimate shear stress, shear resisting mechanism, (3) review on the histeritic behavior of column beam subassemblages; effect of several factors on the histerisis loop, deformation analysis of beam including the joint, methods of improving the histerisis loop of the subassemblages, (4) needed researches in near future.
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  • ON THE TEST METHOD FOR RESISTANCE OF CONCRETE TO FREEZING AND THAWING
    Yoshiro Koh, Toshio Hasegawa
    1981 Volume 19 Issue 9 Pages 16-22
    Published: September 15, 1981
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.19.9_16
    JOURNAL FREE ACCESS
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    The process and development of the investigations for standardization of the test method for resistance of concrete to freezing and thawing are described. Taking into consideration of the present situation of testing apparatuses in Japan, a proposed method for JIS is about the same to the method described in ASTM C 666, however, several detailed amendments were made to get uniform data and the measurement of the length change of specimens after prescribed cycles of freezing and thawing is introduced as a tentative reference test.
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  • CONSTRUCTION SYSTEMATIZATION IN A HOTEL PROJECT
    -Saipan Hafadai Beach Hotel Extention Project-
    Shinji Matsumoto, Yoshitsugu Uchiyama, Koichi Tanji
    1981 Volume 19 Issue 9 Pages 23-28
    Published: September 15, 1981
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.19.9_23
    JOURNAL FREE ACCESS
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    This paper describes the outline of the concrete construction for Hafadai Beach Hotel Extention Project in Saipan. Saipan is a small island in the Pacific Ocean, and almost all of the construction materials and equipment are imported from Japan and other countries. As for the construction labors, people are from the Philippines, and it is very important but difficult to control the number of labors available. In order to proceed with the time table of this project with such conditions, a systematized construction method was applied. In this project almost all the concrete forms and reinforcements were prefabricated on site. For slab construction specially designed precast concrete panels which were also fabricated on site were used. Organized teams with fixed members worked every day without any idle time, and repeated 18 times of the work cycle. Consequently labor productivity was improved remarkably.
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  • [title in Japanese]
    [in Japanese]
    1981 Volume 19 Issue 9 Pages 29-33
    Published: September 15, 1981
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.19.9_29
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese], [in Japanese]
    1981 Volume 19 Issue 9 Pages 63-72
    Published: September 15, 1981
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.19.9_63
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese]
    1981 Volume 19 Issue 9 Pages 91-103
    Published: September 15, 1981
    Released on J-STAGE: April 26, 2013
    DOIhttps://doi.org/10.3151/coj1975.19.9_91
    JOURNAL FREE ACCESS
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