{"_buckets": {"deposit": "98a610f1-10da-41dc-8432-3ef604f0f9a6"}, "_deposit": {"id": "2007515", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "2007515"}, "status": "published"}, "_oai": {"id": "oai:u-ryukyu.repo.nii.ac.jp:02007515", "sets": ["1642837729050", "1642838406845"]}, "author_link": [], "item_1617186331708": {"attribute_name": "Title", "attribute_value_mlt": [{"subitem_1551255647225": "\u6c96\u7e04\u306e\u30b3\u30f3\u30af\u30ea\u30fc\u30c8\u306e\u57fa\u672c\u7684\u6027\u72b6\u30002", "subitem_1551255648112": "ja"}, {"subitem_1551255647225": "Studies on Fundamental Properties of Concrete in Okinawa, 2", "subitem_1551255648112": "en"}]}, "item_1617186419668": {"attribute_name": "Creator", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "\u5177\u5fd7, \u5e78\u660c", "creatorNameLang": "ja"}]}, {"creatorNames": [{"creatorName": "Gushi, Yukimasa", "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_1617186626617": {"attribute_name": "Description", "attribute_value_mlt": [{"subitem_description": "Using sea sand and crushed stone is the distinctive feature of concrete in Okinawa Prefecture. The characteristics of such concrete has already published in many papers by the auther and others. There are two kinds of crushed stone used in Okinawa Island. One is hard and called \"Motobu\" crushed stone and has large density and small specific water content. So the static and dynamic Young\u0027s maduli of the concrete which uses Motobu crushed stone are much larger than ones which described in the specifications of AIJ and JSCE in the practical range of compressive strength between 150 and 400kg/cm\u00b2. The other is relatively soft and called Ryukyu lime stone crushed stone. The concrete using the relatively soft crushed stone has smaller Young\u0027s moduli than the concrete with Motobu crushed stone, but still lightly larger than specified values in the AIJ specification. There are many factors which affect the values of the Young\u0027s maduli of concrete. In this study, compressive strength and unit weight of concrete are the most affecting factors. Formulae for both static and dynamic Young\u0027s moduli are presented by using the method of the least square. The formulae are described in terms of compressive strength and unit weight of concrete. The increasing pattern of compressing strength of the concrete using hard crushed stone as the time passes is almost the same as described in common technical books. The rate of increase of Young\u0027s moduli as the time passes is much slower than ones of compressive strength. The concrete using larger maximum size crushed stone exhibits much larger Young\u0027s moduli than the concrete with small maximum size. Bleeding behavior of the concrete using crushed stone and sea sand will be much improved by using \"Ishig\u016b\" as a part of fine aggregate. Bleeding rate or quantity becomes half or one-third, if \"Ishig\u016b\" is used properly with other materials.", "subitem_description_type": "Other"}, {"subitem_description": "\u7d00\u8981\u8ad6\u6587", "subitem_description_type": "Other"}]}, "item_1617186643794": {"attribute_name": "Publisher", "attribute_value_mlt": [{"subitem_1522300295150": "ja", "subitem_1522300316516": "\u7409\u7403\u5927\u5b66\u7406\u5de5\u5b66\u90e8"}, {"subitem_1522300295150": "en", "subitem_1522300316516": "Science and Engineering Division, University of the Ryukyus"}]}, "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/20.500.12000/27014"}]}, "item_1617186920753": {"attribute_name": "Source Identifier", "attribute_value_mlt": [{"subitem_1522646500366": "ISSN", "subitem_1522646572813": "0387-429X"}, {"subitem_1522646500366": "NCID", "subitem_1522646572813": "AN00250785"}]}, "item_1617186941041": {"attribute_name": "Source Title", "attribute_value_mlt": [{"subitem_1522650068558": "ja", "subitem_1522650091861": "\u7409\u7403\u5927\u5b66\u7406\u5de5\u5b66\u90e8\u7d00\u8981. \u5de5\u5b66\u7bc7"}, {"subitem_1522650068558": "en", "subitem_1522650091861": "Bulletin of Science \u0026 Engineering Division, University of the Ryukyus. Engineering"}]}, "item_1617187056579": {"attribute_name": "Bibliographic Information", "attribute_value_mlt": [{"bibliographicIssueNumber": "15", "bibliographicPageEnd": "12", "bibliographicPageStart": "1"}]}, "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": "No15P001.pdf", "future_date_message": "", "is_thumbnail": false, "mimetype": "", "size": 0, "url": {"objectType": "fulltext", "url": "https://u-ryukyu.repo.nii.ac.jp/record/2007515/files/No15P001.pdf"}, "version_id": "e309cee5-b65e-4fb9-ba6c-ecf6f5ca589b"}]}, "item_title": "\u6c96\u7e04\u306e\u30b3\u30f3\u30af\u30ea\u30fc\u30c8\u306e\u57fa\u672c\u7684\u6027\u72b6\u30002", "item_type_id": "15", "owner": "1", "path": ["1642837729050", "1642838406845"], "permalink_uri": "http://hdl.handle.net/20.500.12000/27014", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2013-07-24"}, "publish_date": "2013-07-24", "publish_status": "0", "recid": "2007515", "relation": {}, "relation_version_is_last": true, "title": ["\u6c96\u7e04\u306e\u30b3\u30f3\u30af\u30ea\u30fc\u30c8\u306e\u57fa\u672c\u7684\u6027\u72b6\u30002"], "weko_shared_id": -1}