MATHEMATICAL MODELING TO PREDICT LONG-TERM CORROSION LOSS TO OCCUR ON WEATHERING STEELS

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  • 耐候性鋼の腐食減耗予測モデルに関する研究
  • タイコウセイ コウ ノ フショク ゲンモウ ヨソク モデル ニ カンスル ケンキュウ

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Abstract

A computational method to predict long-term corrosion loss to occur on weathering steel is studied. An algorism to obtain kinetic parameters to predict penetration curves for bare and surface treated weathering steels is outlined, based upon recently established durable state concept. The proposed computational scheme also contains a meteorological database, an air-born salt simulator, a sulfur oxides estimator, etc. The most important argument in this paper is in the clarification of various parameters which are related to the extent of future degradation to occur on weathering steel members. These parameters should be systematically shared among engineers to establish minimum maintenance durable steel structures. Expecting further development, the authors explain all contents of the presently established corrosion prediction system in details.

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