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  1. SSMSパブリケーション
  2. Vol.08

Mechanism Clarification and Knowledge Formation of Unique Behavior of Chemically Prestressed Concrete for Efficient Use of Expansive Concrete

http://hdl.handle.net/10173/1047
http://hdl.handle.net/10173/1047
edc4fbff-4038-4bd3-9524-796fa464ef05
名前 / ファイル ライセンス アクション
sms12-1191.pdf sms12-1191.pdf (1.5 MB)
Item type 会議発表論文 / Conference Paper(1)
公開日 2013-10-25
タイトル
タイトル Mechanism Clarification and Knowledge Formation of Unique Behavior of Chemically Prestressed Concrete for Efficient Use of Expansive Concrete
言語
言語 eng
キーワード
主題Scheme Other
主題 Expansive concrete
キーワード
主題Scheme Other
主題 shrinkage compensation
キーワード
主題Scheme Other
主題 self prestress
資源タイプ
資源タイプ識別子 http://purl.org/coar/resource_type/c_5794
資源タイプ conference paper
著者 SAKAI, Yuya

× SAKAI, Yuya

SAKAI, Yuya

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KISHI, Toshiharu

× KISHI, Toshiharu

KISHI, Toshiharu

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抄録
内容記述タイプ Abstract
内容記述 The objectives of this paper are to understand expansive concrete by discussing the mechanism of unique behaviors and to propose appropriate way to use expansive additive so that average engineers can utilize it properly. First, the mechanism of nonlinear behavior of expansive concrete is discussed. From the observations of fracture surface of cement paste specimen, it’s confirmed that one of the causes of the nonlinear behavior is micro cracking due to strain variation introduced by expansive action since micro cracking causes plastic deformation and stiffness reduction. Experiments using different types of gravel and their strain during volumetric expansion indicate that another cause of the nonlinear behavior is the debonding on the gravel surface. Debonding on the rebar surface is also confirmed in the test using reinforced cement paste specimen with expansive additive. The debonding on rebar, however, is prevented by using gravel since gravel changes strain distribution in the specimen. It can be said that using gravel and deformed bar constrain debonding on the rebar surface in chemically prestressed concrete. Based on the above results, some points which should be kept in mind when using expansive additive are pointed out.
書誌情報 Society for Social Management Systems Internet Journal

巻 8, 発行日 2012-05
著者版フラグ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
出版者
出版者 Society for Social Management Systems
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