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  1. 紀要論文
  2. 琉球大学農学部学術報告
  3. 48号
  1. 部局別インデックス
  2. 農学部

石灰質砕砂の強度特性

http://hdl.handle.net/20.500.12000/3649
http://hdl.handle.net/20.500.12000/3649
17cb2ce8-6540-4847-a7d0-e8b4415af097
名前 / ファイル ライセンス アクション
KJ00000161923.pdf KJ00000161923.pdf
Item type デフォルトアイテムタイプ(フル)(1)
公開日 2008-02-14
タイトル
タイトル 石灰質砕砂の強度特性
言語 ja
作成者 新城, 俊也

× 新城, 俊也

ja 新城, 俊也

宮城, 調勝

× 宮城, 調勝

ja 宮城, 調勝

永吉, 功治

× 永吉, 功治

ja 永吉, 功治

Shinjo, Toshiya

× Shinjo, Toshiya

en Shinjo, Toshiya

Miyagi, Norikatsu

× Miyagi, Norikatsu

en Miyagi, Norikatsu

Nagayoshi, Koji

× Nagayoshi, Koji

en Nagayoshi, Koji

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
主題
言語 ja
主題Scheme Other
主題 砕砂
言語 ja
主題Scheme Other
主題 琉球石灰岩
言語 ja
主題Scheme Other
主題 三軸圧縮試験
言語 ja
主題Scheme Other
主題 せん断強度
言語 ja
主題Scheme Other
主題 ダイレイタンシー
内容記述
内容記述タイプ Other
内容記述 琉球石灰岩の砕砂とさんご礁の石灰質砂について三軸圧縮試験を行いせん断特性を比較検討した。主な結果は次のようである。(1) 等方圧密試験による圧密降伏応力は砕砂で0.88MPa, 石灰質砂で0.74MPaであり, 砕砂の圧縮性は石灰質砂に比べて小さい。(2) せん断に伴う粒子破砕は砕砂では石灰質砂に比べて75μm以下の細粒分の増加が著しい。(3) 砕砂では内部摩擦角φ_dは小さなひずみレベルで発現される。(4) 一方, 30%以上の大きな軸ひずみレベルにおける限界状態の内部摩擦角φ_cvは砕砂で35.7°, 石灰質砂で38°である。(5) せん断終了時のe-logp'関係は線形関係にあり, その傾きは砕砂の方が石灰質砂より小さい。このことは石灰質砂では粒子破砕に伴う強度増加の影響が大きいことを示唆している。
内容記述タイプ Other
内容記述 A series of triaxial compression tests was carried out on crushed Ryukyu limestone sand to investigate the shear strength characteristics of carbonate sediments litholized with recrystallization. The test results were compared with that of carbonate sand in coral reef. Compression yield stress, internal friction angle at peak strength, critical state frictional angle and e-logp' relation before and after shearing were discussed. Particle breakage in crushed sand shows the increase in fine-grain fraction smaller than particle size of 75μm with compare to carbonate sand. The internal friction angle at peak strength for crushed sand decreases with the increase in confining pressure and on the other hand the friction angle at the critical state is constant regardless of the degree of particle breakage.
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 琉球大学農学部
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/20.500.12000/3649
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 0370-4246
収録物識別子タイプ NCID
収録物識別子 AN00250548
収録物名
言語 ja
収録物名 琉球大学農学部学術報告
書誌情報
号 48, p. 113-118
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