海工混凝土钢筋锈蚀速率预测模型研究  

Forecast Model of Steel Corrosion Rate of Marine Concrete

作　　者：俞海勇[1] 张贺[1] 王琼[1] 徐强[1] 邓咏梅[1] 

机构地区：[1]上海市建筑科学研究院,上海200032

出　　处：《建筑材料学报》2009年第4期478-481,492,共5页Journal of Building Materials

基　　金：上海市科委应用技术开发项目

摘　　要：采用钢筋腐蚀电流密度值来定性表征混凝土中钢筋的锈蚀速率,研究了水灰比、保护层厚度、钢筋周围氯离子浓度和矿物掺和料用量对海工混凝土中钢筋腐蚀电流密度的影响,并对普通条件下的钢筋腐蚀电流密度预测模型进行了修正,建立了海工混凝土钢筋腐蚀电流密度的预测模型.经验证发现,该预测模型有较好的预测效果,与实测值偏差均在±15%以内.Steel corrosion rate in concrete structure is determined through corrosion current density. Also, the influence of water-cement ratio, layer thickness, chloride concentration and mineral admixtures dosage on the corrosion current density was investigated. Based on the forecast model of corrosion current density at common condition the modified model in marine condition is proposed. Through experiments and site verification the forecast model is veracious with the error within ±15%.

关 键 词：腐蚀电流密度 海工混凝土 钢筋锈蚀速率 预测模型 

分 类 号：TU528[建筑科学—建筑技术科学]