Concrete Journal

The Tensile Creep of Concrete

Akiyuki Shimizu

1983 Volume 21 Issue 6 Pages 4-13
Published: June 01, 1983
Released on J-STAGE: April 26, 2013

DOIhttps://doi.org/10.3151/coj1975.21.6_4

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In this paper, the effect of several important factors affecting the tensile creep of concrete are summerized. The mechanism of tensile creep based on some leading theories could explain the difference between tensile creep and compressive creep behaviour, and now has a considerable support. Finally the future subjects of this research are indicated.

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Fatigue and Reinforcement of Reinforced Concrete Floor Slabs in Bridges

Katsuya Wada

1983 Volume 21 Issue 6 Pages 14-26
Published: June 01, 1983
Released on J-STAGE: April 26, 2013

DOIhttps://doi.org/10.3151/coj1975.21.6_14

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While summarizing transitions in the design of reinforced concrete floor slabs in bridges, the fatigue properties and reinforcement of bridges were studied by outlining the summary of tests conducted to observe the current situation concerning the floor slab damage and reinforcement of metropolitan expressways as well as to further observe the fatigue properties of floor slabs.

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Concrete with Addition of Super Retarder and its Practical Use for Pier Foundation

Tatsuji Fuushuku, Akira Yamane, Takashi Shimizu, Kiichi Ariga

1983 Volume 21 Issue 6 Pages 27-35
Published: June 01, 1983
Released on J-STAGE: April 26, 2013

DOIhttps://doi.org/10.3151/coj1975.21.6_27

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This paper report the charactalistics of super retarder added concrete and outline the pier construction for Sophia University Central Libraly in Tokyo. These piers were constructed by means of reverse circulation method or “TBW” process. And into each pier concrete, steel column to support floating slab had to be settled immedietly after concreting. In order to plumb each steel column and keep it in position, concrete require high workability and rigidity. Therefor most effective admixture contents at various concrete temperature were decided through pre-construction experiment and we have aquired desirable result in the actual construction.

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The Design and Execution of 50 Span Continuous RC Rigid-Frame Elevated Bridge

-Akano elevated bridge, Asa line-

Takuya Oohira, Takefumi Tani, Takashi Saitoh

1983 Volume 21 Issue 6 Pages 36-43
Published: June 01, 1983
Released on J-STAGE: April 26, 2013

DOIhttps://doi.org/10.3151/coj1975.21.6_36

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We, Osaka office of Japan Railway Construction Public Corporation (JRCC), developed the RC rigid-frame elevated bridge (400m) that is perfectly continuous and is possible to apply to the every long span. Taking notice of the long rail track and being sure that theory were applicable to the rigid-frame viaduct, the design and execution were performed. And we tried again to mesure in various way for a year and have verified that basic theory. This paper reports the outline of design, execution, a part of the result of measurements and its consideration.

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[title in Japanese]

[in Japanese]

1983 Volume 21 Issue 6 Pages 65
Published: June 01, 1983
Released on J-STAGE: April 26, 2013

DOIhttps://doi.org/10.3151/coj1975.21.6_65

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[title in Japanese]

[in Japanese]

1983 Volume 21 Issue 6 Pages 79-94
Published: June 01, 1983
Released on J-STAGE: April 26, 2013

DOIhttps://doi.org/10.3151/coj1975.21.6_79

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[title in Japanese]

[in Japanese]

1983 Volume 21 Issue 6 Pages 95-106
Published: June 01, 1983
Released on J-STAGE: April 26, 2013

DOIhttps://doi.org/10.3151/coj1975.21.6_95

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