【作者】 余志武； 肖沐惕； 刘鹏； 贺鹏飞； 范洁；

【Author】 YU Zhi-wu;XIAO Mu-ti;LIU Peng;HE Peng-fei;FAN Jie;School of Civil Engineering,Central South University;National Engineering Laboratory for High Speed Railway Construction;

【机构】 中南大学土木工程学院； 中南大学高速铁路建造技术国家工程实验室；

【摘要】 混凝土碳化是导致混凝土耐久性退化的重要因素之一。总结了既有混凝土碳化深度预测模型类型、混凝土碳化机理和影响因素等,归纳了传统碳化深度预测模型建模依据、理论基础、关键参数和适用条件及存在不足。通过对比不同碳化深度模型的预测精度和准确性,分析了各种混凝土碳化深度模型的边界条件、初始条件及假设前提条件的适用范围。此外,还介绍了基于数值求解和神经网络的两种新型碳化深度预测模型研究现状,并探讨了相应模型的优缺点。最后,还对混凝土碳化深度预测模型的研究发展方向进行了展望。更多还原

【Abstract】 Concrete carbonization is one of the important factors that lead to concrete durability deterioration. It summarized the existing prediction model of concrete carbonation depth types, mechanism and influencing factors of concrete carbonation, etc., concluded the traditional carbonization depth prediction model modeling basis, theoretical basis, the key parameters,the applicable condition and shortcomings. By comparing different carbonization depth model forecasting precision and accuracy, the applicable scope of the analysis of the various models of concrete carbonation depth conditions, boundary conditions and initial conditions and assumptions. In addition, the research status of two new carbonization depth prediction model based on the numerical and neural network was introduced, and discussed the advantages and disadvantages of the corresponding model. Finally, the research and development direction of concrete carbonation depth prediction model were prospected.更多还原