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EVALUATIONS ON ASR DAMAGE OF CONCRETE STRUCTURE AND ITS STRUCTURAL PERFORMANCE — Naoshi Ueda (2011) | RDL Network
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EVALUATIONS ON ASR DAMAGE OF CONCRETE STRUCTURE AND ITS STRUCTURAL PERFORMANCE
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Hikaru Nakamura
Nagoya University
EVALUATIONS ON ASR DAMAGE OF CONCRETE STRUCTURE AND ITS STRUCTURAL PERFORMANCE
Article
2011
en
Authors
+3 more
NU
Naoshi Ueda
Hikaru Nakamura
Nagoya University
MK
Minoru Kunieda
Abstract
1 min read
ASRを生じた構造物の膨張挙動とそれに伴う損傷が構造性能に及ぼす影響を明らかにすることを目的として,実験と解析による検討を行った.ASR膨張試験の結果,ASR膨張は構造物の配筋状態等の影響により方向性を持つことを示した.また,はり供試体から採取したコア供試体の材料特性は,膨張の程度に従った異方性に影響を受けるため,構造全体挙動を評価する際は,コアの採取位置や方向に注意する必要があることを示した.一方,ASR膨張解析と荷重作用解析を行なった結果,はり供試体から実構造物に至るまでASR損傷状況を概ね評価できることを示した.本研究の結果,RC構造はASR膨張が比較的小さい場合においても構造性能が低下するのに対して,プレストレス構造はASR膨張に対する抑制の効果が大きく,構造性能への影響は少ないことを示した.
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