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  1. 紀要論文
  2. 琉球大学理工学部紀要 工学編
  3. 14号
  1. 部局別インデックス
  2. 工学部

沖縄の鉄筋コンクリート構造物の耐久性 -現況調査と考察、その3, 西表島-

http://hdl.handle.net/20.500.12000/26874
http://hdl.handle.net/20.500.12000/26874
4fc1ce0e-f66b-452b-bba9-e1aa14b4c0f8
名前 / ファイル ライセンス アクション
No14P011.pdf No14P011.pdf
Item type デフォルトアイテムタイプ(フル)(1)
公開日 2013-07-17
タイトル
タイトル 沖縄の鉄筋コンクリート構造物の耐久性 -現況調査と考察、その3, 西表島-
言語 ja
作成者 具志, 幸昌

× 具志, 幸昌

ja 具志, 幸昌

和仁屋, 晴讙

× 和仁屋, 晴讙

ja 和仁屋, 晴讙

伊良波, 繁雄

× 伊良波, 繁雄

ja 伊良波, 繁雄

Gushi, Yukimasa

× Gushi, Yukimasa

en Gushi, Yukimasa

Waniya, Haruyoshi

× Waniya, Haruyoshi

en Waniya, Haruyoshi

Iraha, Shigeo

× Iraha, Shigeo

en Iraha, Shigeo

アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
内容記述
内容記述タイプ Other
内容記述 The reinforced concrete structures, mainly bridges, in Iriomote Island are investigated from the view point of durability. The following items are clarified: 1) The average values of the specific weight and water content taken from the damaged portions of the concrete structures are 2.17 and 11.75%, respectively. 2) The above values show that the quality of concrete in Iriomete Island is the lowest one in the series of investigations made by authers. 3) Concrete materials except sand are transported via sea, and the island is remote from center region of Okinawa prefecture. The levels of construction and its administrative works of reinforced concrete structures are not so high to make good quality concrete in the island. 4) Average salt content of the concrete samples taken from the existing structures is 0.39% by mortar weight. This figure is enough large to corrode the reinforcing bars embedded in concrete. 5) The number of RC bridges built during 1951~1955 is 16, and 4 of which are destroyed or rebuilt, 11 of which are seriously deteriorated due to the corrosion of reinforcing bars in concrete. 8 RC bridges are built after 1968, two of which are lightly damaged by their reinforcing bar corrosions and the rest are safely maintained. 6) The main reasons of the above damages are the high content of salt in concrete and the low quality of concrete. 7) The school buildings of this island are not investigated enough. Two schools are observed and concrete samples are taken from their damaged portions. The average of their salt contents is 0.33% and not so different from the value of the bridges. 8) The high rate of damage of bridges in Iriomote Island must be lowered by appropriate measures, which should be applied as soon as possible.
内容記述タイプ Other
内容記述 紀要論文
出版者
言語 ja
出版者 琉球大学理工学部
言語
言語 jpn
資源タイプ
資源タイプ departmental bulletin paper
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
識別子
識別子 http://hdl.handle.net/20.500.12000/26874
識別子タイプ HDL
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 0387-429X
収録物識別子タイプ NCID
収録物識別子 AN00250785
収録物名
言語 ja
収録物名 琉球大学理工学部紀要. 工学篇
書誌情報
号 14, p. 11-29
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