CALCULATION METHOD OF LIFE CYCLE COST TO REINFORCED CONCRETE STRUCTURES DETERIORATED WITH SALT ATTACK

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  • 塩害を受けるRC構造物のライフサイクルコスト算定手法に関する基礎的研究
  • エンガイ オ ウケル RC コウゾウブツ ノ ライフサイクルコスト サンテイ シュホウ ニ カンスル キソテキ ケンキュウ

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Abstract

Cost of concrete structures has to include maintenance cost in addition to initial construction cost from the standpoint of economical usage. The paper deals with life cycle cost of RC piers constructed under sea environments and tries to evaluate life cycle cost (CLI). The functionality of structures decreases according as time elapses because of salt attack. It is, therefore, necessary to estimate deterioration of structures, to which the paper applies the probability approach and constructs the program in consideration of uncertainty. Law of expected minimum cost is applied to calculate life cycle cost and the calculation flow of CLI is proposed. The calculation technique is, then, shown to the existing pier according as the calculation flow. Finally, the adequate interval of maintenance is indicated.

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