{"_buckets": {"deposit": "dd74205c-505a-450f-9d29-80ab54196287"}, "_deposit": {"id": "2005605", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "2005605"}, "status": "published"}, "_oai": {"id": "oai:u-ryukyu.repo.nii.ac.jp:02005605", "sets": ["1642837858306", "1642838406845"]}, "author_link": [], "item_1617186331708": {"attribute_name": "Title", "attribute_value_mlt": [{"subitem_1551255647225": "コンクリート中の鉄筋の腐食による付着性状の変化　(1)", "subitem_1551255648112": "ja"}, {"subitem_1551255647225": "The Bond Behavior of Corroded Reinforcing Bars in Concrete, 1", "subitem_1551255648112": "en"}]}, "item_1617186419668": {"attribute_name": "Creator", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "和仁屋, 晴讙", "creatorNameLang": "ja"}]}, {"creatorNames": [{"creatorName": "具志, 幸昌", "creatorNameLang": "ja"}]}, {"creatorNames": [{"creatorName": "伊良波, 繁雄", "creatorNameLang": "ja"}]}, {"creatorNames": [{"creatorName": "Waniya, Haruyoshi", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Gushi, Yukimasa", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Iraha, Shigeo", "creatorNameLang": "en"}]}]}, "item_1617186476635": {"attribute_name": "Access Rights", "attribute_value_mlt": [{"subitem_1522299639480": "open access", "subitem_1600958577026": "http://purl.org/coar/access_right/c_abf2"}]}, "item_1617186609386": {"attribute_name": "Subject", "attribute_value_mlt": [{"subitem_1522299896455": "en", "subitem_1522300014469": "Other", "subitem_1523261968819": "Bond"}, {"subitem_1522299896455": "en", "subitem_1522300014469": "Other", "subitem_1523261968819": "Cracks"}, {"subitem_1522299896455": "en", "subitem_1522300014469": "Other", "subitem_1523261968819": "Crack width"}, {"subitem_1522299896455": "en", "subitem_1522300014469": "Other", "subitem_1523261968819": "Deformed reinforcing bars"}, {"subitem_1522299896455": "en", "subitem_1522300014469": "Other", "subitem_1523261968819": "Electrolysis"}, {"subitem_1522299896455": "en", "subitem_1522300014469": "Other", "subitem_1523261968819": "Cumulative amount of current"}, {"subitem_1522299896455": "en", "subitem_1522300014469": "Other", "subitem_1523261968819": "Corrosion"}]}, "item_1617186626617": {"attribute_name": "Description", "attribute_value_mlt": [{"subitem_description": "This paper presents the effects of corrosion on bond behavior of reinforcing bars. Pull-out and push-out tests were performed for specimens of 15cm cube with a deformed bar D19 at the center where the bar was electrolytically corroded before the tests. The bond characteristics of specimens with corroded and non-corroded bars are investigated from the test results. The following results are obtained from the test. 1. Initial surface cracks started when the cumulative current of 5 to 8 amp. hrs. was observed and the width ranged from 0 to 0.20mm. 2. Failure pattern of all specimens was splitting failure. 3. Total slip up to failure at free end with an electrolytically corroded bar was 1/5 to 1/10 times the one with a non-corroded bars. Existence of surface cracks due to corrosion of the bar has no effect on the slip. 4. As for the specimens with cumulative current of less than 5 amp. hrs. when no cracks was observed, the bond strength of electrolytically corroded bars (σ_\u003cbk\u003e) was equal to or grater than one of non-corroded (σ_\u003cba\u003e). 5. The value of σ_\u003cbk\u003e / σ_\u003cbo\u003e dropped to 0.50 for the specimens with relatively small cracks showing cumulative current less than 8 amp. hrs. and scattered in the range of 0.25 to 0.50 for the ones having maximum crack width of 0.20 to 0.60mm where cumulative current of 9 to 17 amp. hrs. was observed. It seems that the variance of these values was caused by the existence of defferent internal cracks. 6. For the specimens reinforced with a spiral bar around the center main bar where cracks obsereved, there was no reduction in bond strength and ductile capacity in bond. It is concluded that the reinforcement with a spiral bar around the center contributed beneficially on splitting bond failure.", "subitem_description_type": "Other"}, {"subitem_description": "紀要論文", "subitem_description_type": "Other"}]}, "item_1617186643794": {"attribute_name": "Publisher", "attribute_value_mlt": [{"subitem_1522300295150": "ja", "subitem_1522300316516": "琉球大学工学部"}]}, "item_1617186702042": {"attribute_name": "Language", "attribute_value_mlt": [{"subitem_1551255818386": "jpn"}]}, "item_1617186783814": {"attribute_name": "Identifier", "attribute_value_mlt": [{"subitem_identifier_type": "HDL", "subitem_identifier_uri": "http://hdl.handle.net/20.500.12000/17672"}]}, "item_1617186920753": {"attribute_name": "Source Identifier", "attribute_value_mlt": [{"subitem_1522646500366": "ISSN", "subitem_1522646572813": "0389-102X"}, {"subitem_1522646500366": "NCID", "subitem_1522646572813": "AN0025048X"}]}, "item_1617186941041": {"attribute_name": "Source Title", "attribute_value_mlt": [{"subitem_1522650068558": "ja", "subitem_1522650091861": "琉球大学工学部紀要"}]}, "item_1617187056579": {"attribute_name": "Bibliographic Information", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "1982-09", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "24", "bibliographicPageEnd": "57", "bibliographicPageStart": "47"}]}, "item_1617258105262": {"attribute_name": "Resource Type", "attribute_value_mlt": [{"resourcetype": "departmental bulletin paper", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_1617265215918": {"attribute_name": "Version Type", "attribute_value_mlt": [{"subitem_1522305645492": "VoR", "subitem_1600292170262": "http://purl.org/coar/version/c_970fb48d4fbd8a85"}]}, "item_1617605131499": {"attribute_name": "File", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_access", "download_preview_message": "", "file_order": 0, "filename": "No24p047.pdf", "future_date_message": "", "is_thumbnail": false, "mimetype": "", "size": 0, "url": {"objectType": "fulltext", "url": "https://u-ryukyu.repo.nii.ac.jp/record/2005605/files/No24p047.pdf"}, "version_id": "9256acf0-fc29-451a-b5b6-a598b32c7540"}]}, "item_title": "コンクリート中の鉄筋の腐食による付着性状の変化　(1)", "item_type_id": "15", "owner": "1", "path": ["1642837858306", "1642838406845"], "permalink_uri": "http://hdl.handle.net/20.500.12000/17672", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2010-08-03"}, "publish_date": "2010-08-03", "publish_status": "0", "recid": "2005605", "relation": {}, "relation_version_is_last": true, "title": ["コンクリート中の鉄筋の腐食による付着性状の変化　(1)"], "weko_shared_id": -1}