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Predecessor
Volume 30, Issue 8
Displaying 1-7 of 7 articles from this issue
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Toshiyuki Shioya, Toshiaki Hasegawa1992 Volume 30 Issue 8 Pages 5-15
Published: August 01, 1992
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESSVarious strengths of concrete structures decrease as structure sizes increase (size effect). This paper summarizes present research progress in size effects on strength of plain concrete and reinforced concrete, as well as analytical methods and design specifications concerning size effects. Future research programs in this area are also mentioned.View full abstractDownload PDF (1349K) -
Koji Takewaka1992 Volume 30 Issue 8 Pages 16-27
Published: August 01, 1992
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESSThe cathodic protection (CP) is considered to be one of the most reliable corrosion protection methods of reinforcement in concrete structures. In USA and Europe, many concrete bridge decks and garage slabs deteriorated due to the deicing salts have already been repaired using CP. Also in Japan, application of this method for repairing the chloride attacked concrete structures have been started a few years ago. In Japan, however, the chloride corrosion problem in reinforcement generally exist on the marine concrete structures. The configuration of these structures are more complicated and construction environment is more severe than the bridge decks etc. in USA and Europe. Therefore, it is necessary to establish the more reliable criteria and the more effective construction method for CP on concrete structures. This report, firstly, shows the fundamental theory of CP and CP criteria examined on concrete structures. Secondly, the construction of CP system and problems of over-protection are also summarized.View full abstractDownload PDF (2437K) -
S. Nishibayashi, K. Yamane, M. Shigeyoshi, H. Nakamura1992 Volume 30 Issue 8 Pages 28-38
Published: August 01, 1992
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESSIn this technical report, it is carried out the field investigation and the repair method for cracking damages in the public school building constructed by reinforced concrete. Because the students are not absolutely injuried by the peel off and falling of concrete broken piece. Tottori University was entrusted investigation from the school administration, to servey the cause of cracking damage, and to establish the urgent and proper repair method. From the results of investigation, it was decided the cause of cracking damage was due to alkali-aggregate reaction. This report is consisted of two parts, that is, the first half is the investigation to make clear cause of cracking damage and to examine the repair method during 1990 to 1991, and the second half is an outline of repair work being carriedout at 1991.View full abstractDownload PDF (3567K) -
Y. Takenaga, T. Hitomi, A. Sumi, A. Takahata1992 Volume 30 Issue 8 Pages 39-47
Published: August 01, 1992
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESSRokko Island City East Court 3 Bangai is a highrise residential building with 41 stories, a typical floor area of 1 600 m2 and the structure is steel reinforced concrete (B 1 F-25 F) and reinforced concrete (26 F-41 F). This building was constructed adoptting the integrated construction method positively by using site-precast concrete members throughout construction. Although structural system was changed part of the way, short term construction was completed by the new method with small amount of regular labors effectively. Furthermore, the quality of high strength concrete was kept stable during the construction by adoptting the quality control system at the site. This report presents the construction method and quality control of high strength concrete at a construction site about this building.View full abstractDownload PDF (2255K) -
M. Watanabe, M. Nakamichi, T. Kado, A. Yonezawa1992 Volume 30 Issue 8 Pages 48-58
Published: August 01, 1992
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESSWankou-Breakwaters in Kamaishi Port are being constructed to protect lives and properties in the Kamaishi Bay area against tsunami. Submerged dikes are constructed between the main breakwaters to control tsunami supplementary. The structure of the caisson of the submerged dike was determined as a hybrid structure to get high strength and light weight. The caisson is a mixed structure, that is, the side wall is a hybrid slab, the partition wall is a steel plate and the bottom slab is made of reinforced concrete. This report presents the result of design and construction of the caisson.View full abstractDownload PDF (2100K) -
[in Japanese]1992 Volume 30 Issue 8 Pages 81-86
Published: August 01, 1992
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESSDownload PDF (925K) -
[in Japanese]1992 Volume 30 Issue 8 Pages 87-91
Published: August 01, 1992
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESSDownload PDF (781K)
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