抗钢筋锈蚀混凝土服务年限预测

The Serve Life Prediction of Resistance Steel Corrosion Concrete

针对常用的ＴＵＴＴＩ钢筋锈蚀模型只考虑碳化，而没有考虑Ｃｌ－侵蚀引起混凝土中钢筋锈蚀的不足，本文根据混凝土中钢筋周围的碱度与临界氯离子浓度的关系：［Ｃｌ－］／［ＯＨ－］＝０．６来修正ＴＵＴＴＩ模型并重新定义诱导期和发展期，修正后的ＴＵＴＴＩ模型综合考虑了碳化和Ｃｌ－侵蚀引起的钢筋锈蚀：本文还利用电化学线性极化法和交流阻抗谱理论补充了钢筋锈蚀发展期预测模型。

The common TUTTI steel corrosion model only considers the influence of carbonation,but not considers the influence of Cl - attack.In accordance with the defect of TUTTI model,based on the relationship of alkali level and the critical chloride ion concentration right rounding the steel in concrete:/= 0.6 ,this paper modifies TUTTI model and redefines the stage of inducement and progression.The modified model considers the corrosion influence of carbonation and Cl - attack at the same time.Furthermore,using electrochemical linear polarization method and A.C.impedance spectroscopy theory,this paper supplements the predicts model of the stage of process.