{"created":"2022-01-28T01:17:00.077349+00:00","id":2005605,"links":{},"metadata":{"_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":["1642837622505:1642837855274:1642837858306","1642838403551:1642838406845"]},"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_<bk>) was equal to or grater than one of non-corroded (σ_<ba>). 5. The value of σ_<bk> / σ_<bo> 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","filename":"No24p047.pdf","mimetype":"application/pdf","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"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2010-08-03"},"publish_date":"2010-08-03","publish_status":"0","recid":"2005605","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_creator_id":"1","weko_shared_id":-1},"updated":"2022-10-31T02:48:55.746966+00:00"}