A Basic Survey and Analysis of Long-Term Properties of Dam Concrete

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  • KONDO Masafumi
    国立研究開発法人土木研究所 水工研究グループ水工構造物チーム
  • YADA Kazuya
    国立研究開発法人土木研究所 水工研究グループ水工構造物チーム
  • SASAKI Takashi
    国土交通省国土技術政策総合研究所 河川研究部大規模河川構造物研究室

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Other Title
  • ダムコンクリートの長期物性に関する基礎的調査・分析
  • ダムコンクリート ノ チョウキ ブッセイ ニ カンスル キソテキ チョウサ ・ ブンセキ

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Description

Various test data on long-term (several to over 100 years of age) properties of dam concrete used for Japanese concrete dams were investigated and analyzed. The result indicates that the long-term compressive strength excesses early age strength in many cases, while it may be going to peak in some cases and the degree of strength increment may depend on bonding materials. In addition, test data of elastic modulus and tensile strength were analyzed in relation to compressive strength and material age. The rates of neutralization of dam concrete were also estimated and discussed.

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