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Abstract Based on the study on developing corrosion degree of reinforcing bars in concrete and its influence on the crack of protective layer and the mechanics properties of reinforcing bars, the experimental conclusions on the quantitative change relationship between the different influence factors in its progress are proposed. They have important practical meanings on following aspects: design of reinforced concrete scheme for construction projects, selection of raw materials, construction methods and determination of protective measures for reinforcing bars, repair of built structures and evaluation of its continuous operation, guarantee long-term safety of railway engineering structures, etc.
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Received: 20 January 2001
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2001, Vol. 18 
