Item type |
デフォルトアイテムタイプ(フル)(1) |
公開日 |
2012-03-16 |
タイトル |
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タイトル |
沖縄のコンクリートの基本的性状に関する研究 その1 |
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言語 |
ja |
タイトル |
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タイトル |
Studies On Fundamental Properties of Concrete in Okinawa, 1 |
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言語 |
en |
作成者 |
具志, 幸昌
和仁屋, 晴讙
Gushi, Yukimasa
Waniya, Haruyoshi
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アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
内容記述 |
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内容記述タイプ |
Other |
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内容記述 |
In Okinawa, crushed lime stone and beach sand are most common aggregates for concrete. So, data of concrete in other places outside Okinawa often can not be applicable here in Okinawa. We, therefore, have made studies on fundamental properties of materials and concretes. In this paper, we discuss the effect of commonly used additives on properties of concrete made of local materials, and we show the relationships between factors, such as the relationships between water content and slump vallues of plain concrete, unit weight of concrete and air contents, the (W+P+A) and slump values, the v/c and σ28, the bleeding and additives, and so on. Some important conclusions are shown in the following, 1) Due to relatively large value of the unit weight of concrete when used local materials, design value of the unit weight of concrete recommanded in commonly used specifications will not be applicable. 2) The bleeding rates of concrete with additives are much higher than expected. 3) The recommonded formulae showing relaticrnships between cement water ratio and twnty-eighth-day strength are presented. 4) The concrete using carse aggregate of 25mm maximum size needed much smallar amount of water than expected. |
内容記述 |
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内容記述タイプ |
Other |
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内容記述 |
紀要論文 |
出版者 |
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言語 |
ja |
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出版者 |
琉球大学理工学部 |
出版者 |
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言語 |
en |
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出版者 |
Science and Engineering Division, University of the Ryukyus |
言語 |
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言語 |
jpn |
資源タイプ |
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資源タイプ |
departmental bulletin paper |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
出版タイプ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
識別子 |
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識別子 |
http://hdl.handle.net/20.500.12000/23812 |
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識別子タイプ |
HDL |
収録物識別子 |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0387-429X |
収録物識別子 |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AN00250785 |
収録物名 |
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言語 |
ja |
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収録物名 |
琉球大学理工学部紀要. 工学篇 |
収録物名 |
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言語 |
en |
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収録物名 |
Bulletin of Science & Engineering Division, University of the Ryukyus. Engineering |
書誌情報 |
号 2,
p. 67-110,
発行日 1969-04
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