{"created":"2022-01-31T07:47:56.462610+00:00","id":2009718,"links":{},"metadata":{"_buckets":{"deposit":"12c82196-5f16-4afe-94a6-fc47396f56cf"},"_deposit":{"id":"2009718","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"2009718"},"status":"published"},"_oai":{"id":"oai:u-ryukyu.repo.nii.ac.jp:02009718","sets":["1642838163960:1642838338003","1642838403551:1642838406845"]},"author_link":[],"item_1617186331708":{"attribute_name":"Title","attribute_value_mlt":[{"subitem_1551255647225":"沖縄県の海岸線に11年間暴露したフライアッシュコンクリートの耐久性に関する研究","subitem_1551255648112":"ja"},{"subitem_1551255647225":"Study on the durability of fly ash concrete exposed to the coastline in Okinawa pref. for 11years","subitem_1551255648112":"en"}]},"item_1617186419668":{"attribute_name":"Creator","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"風間, 洋","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"富山, 潤","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"砂川, 勇二","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"比嘉, 正也","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"小籏, 俊介","creatorNameLang":"ja"}]},{"creatorNames":[{"creatorName":"Kazama, Hiroshi","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Tomiyama, Jun","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Sunakawa, Yuji","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Higa, Masaya","creatorNameLang":"en"}]},{"creatorNames":[{"creatorName":"Obata, Syunsuke","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_1617186499011":{"attribute_name":"Rights","attribute_value_mlt":[{"subitem_1522650717957":"ja","subitem_1522651041219":"© 2017 公益社団法人 土木学会"}]},"item_1617186609386":{"attribute_name":"Subject","attribute_value_mlt":[{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"fly ash concrete"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"constant cement content"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"11 years exposure test"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"salt damage"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"the coast of Okinawa"},{"subitem_1522299896455":"en","subitem_1522300014469":"Other","subitem_1523261968819":"nondestructive test"}]},"item_1617186626617":{"attribute_name":"Description","attribute_value_mlt":[{"subitem_description":"近年沖縄県では，石炭火力発電所のフライアッシュ(FA)の有効利用としてコンクリートに配合されており，2015年1月開通の伊良部大橋では，上・下部工でフライアッシュコンクリート(FAC)が用いられている．本論文は，波しぶきのかかる海岸線に非JIS FAを細骨材置換した外割りFAC供試体を約11年間暴露し，FACに高い塩分浸透抑制効果があること，FACでも自然電位や分極抵抗などの非破壊試験が，普通コンクリート(BC)と同様の閾値で判定可能であること，高湿度の海岸域暴露ではFAC・BCともに中性化の進行が鉄筋腐食に影響のない程度である等を確認した．また，使用した遅延膨張性骨材の海砂のアルカリ骨材反応(ASR)発生を岩石学的試験により確認したところ，痕跡程度で，ひび割れの主要因ではないと判断した．","subitem_description_type":"Other"},{"subitem_description":"Recently, fly ash, which is a byproduct from burning pulverized coal in coal-fired power plants, has been used to improve a durability of concrete structures in Okinawa Prefecture. Especially, the superstructure and substructure of Irabu bridge, which has been in service since January 2015, was constructed by using fly ash concrete in order to achieve the durable more than 100 years. This paper showed results of durability investigations on fly ash concrete (FAC) which a part of fine aggregate was replaced by non-JIS fly ash exposed to the coastline in northern Okinawa Main Island for about 11 years. It was found from the results that FAC reduces the chloride permeability of concrete, natural current method and polarization resistance method can diagnose the corrosion levels of reinforcing bar in FAC and normal concrete (BC) specimens using the same criteria, and progress of carbonation does not affect to corrosion of reinforcing bar in FAC and BC specimens under a coastal area with high humidity. Also, from petrological diagnosis on a concrete core taken from BC specimen, it was revealed that ASR is not the main cause of the cracks observed on the surface of specimens.","subitem_description_type":"Other"},{"subitem_description":"論文","subitem_description_type":"Other"}]},"item_1617186643794":{"attribute_name":"Publisher","attribute_value_mlt":[{"subitem_1522300295150":"ja","subitem_1522300316516":"公益社団法人 土木学会"},{"subitem_1522300295150":"en","subitem_1522300316516":"Japan Society of Civil Engineers"}]},"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/20.500.12000/41325"}]},"item_1617186920753":{"attribute_name":"Source Identifier","attribute_value_mlt":[{"subitem_1522646500366":"ISSN","subitem_1522646572813":"2185-6567"}]},"item_1617186941041":{"attribute_name":"Source Title","attribute_value_mlt":[{"subitem_1522650068558":"ja","subitem_1522650091861":"土木学会論文集E2（材料・コンクリート構造）"}]},"item_1617187056579":{"attribute_name":"Bibliographic Information","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2017","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"3","bibliographicPageEnd":"270","bibliographicPageStart":"251","bibliographicVolumeNumber":"73"}]},"item_1617258105262":{"attribute_name":"Resource Type","attribute_value_mlt":[{"resourcetype":"journal article","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_1617353299429":{"attribute_name":"Relation","attribute_value_mlt":[{"subitem_1522306287251":{"subitem_1522306382014":"DOI","subitem_1522306436033":"https://doi.org/10.2208/jscejmcs.73.251"}},{"subitem_1522306287251":{"subitem_1522306382014":"DOI","subitem_1522306436033":"https://doi.org/10.2208/jscejmcs.73.251"}},{"subitem_1522306287251":{"subitem_1522306382014":"DOI","subitem_1522306436033":"info:doi/10.2208/jscejmcs.73.251"}}]},"item_1617605131499":{"attribute_name":"File","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_access","filename":"vol73no3p251.pdf","mimetype":"application/pdf","url":{"objectType":"fulltext","url":"https://u-ryukyu.repo.nii.ac.jp/record/2009718/files/vol73no3p251.pdf"},"version_id":"c7a16eac-7864-44e3-be41-4a8c9e7c3853"}]},"item_title":"沖縄県の海岸線に11年間暴露したフライアッシュコンクリートの耐久性に関する研究","item_type_id":"15","owner":"1","path":["1642838338003","1642838406845"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2018-06-11"},"publish_date":"2018-06-11","publish_status":"0","recid":"2009718","relation_version_is_last":true,"title":["沖縄県の海岸線に11年間暴露したフライアッシュコンクリートの耐久性に関する研究"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-08-03T05:36:03.576049+00:00"}