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No.3 (1970/06) >

Title :さんご砂利コンクリートに関する研究2
Title alternative :Studies on Coral Finger Concrete2
Authors :具志, 幸昌
Authors alternative :Gushi, Yukimasa
Issue Date :Jun-1970
Abstract :In previous studies, it was clarified that the strength of Coral Finger concrete was high enough to be used in ordinary concrete works, and that he strong segregation properties of Coral finger concrete could be improved by using AE agents or water reducing agents In this study the following results are obtained. 1.The strength of Coral finger concrete is depend largely on the kind of Coral finger aggregates used. And there are the concretes having equally high strength as the ordinary crushed stone concretes have. 2.The quantitative study of bleeding are made: the rates of bleeding can be reduced a little by using AE agents, but the quantity of bleeding can be reduced some. This tendency is almost the same in the crushed stone concretes, but the bleeding of Coral finger concretes is much largerer in quantity and much more rapid than that of the crushed stone concretes. 3.The young's modulus of the Coral finger concrete is considerablly lower than that of the crushed stone concrete, and the value of it is higher than or about the same as the values specified in the specification. 4.The reference table of mix proportionning of Coral finger concretes are presented, which can be served as the standards in trial mixes of Coral finger concrete work.
Type Local :紀要論文
ISSN :0387-429X
Publisher :琉球大学理工学部
URI :http://hdl.handle.net/20.500.12000/23951
Citation :琉球大学理工学部紀要. 工学篇 = Bulletin of Science & Engineering Division, University of the Ryukyus. Engineering no.3 p.91 -113
Appears in Collections:No.3 (1970/06)

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