摘要
在长期服役期间,建筑材料容易被二氧化碳侵蚀从而引发碳化反应致使碱度下降、钢筋保护性能被削弱,进而结构耐久性受到严重影响,而碳化深度是衡量材料劣化程度的重要指标,精准检测它对寿命预测和性能评估很关键,常用技术有酚酞显色法、激光雷达扫描、X射线衍射和智能图像识别等且各有适用范围与精度优势,量化碳化扩展规律就能构建基于扩散理论的耐久性预测模型,给建筑结构安全性监测和维护管理提供数据支撑。
During long-term service,building materials are easily corroded by carbon dioxide,leading to carbonization reactions and a decrease in alkalinity,weakening of steel protection performance,and serious impact on structural durability.Carbonization depth is an important indicator to measure the degree of material degradation,and accurate detection is crucial for life prediction and performance evaluation.Common technologies include phenolphthalein colorimetric method,laser radar scanning,X-ray diffraction,and intelligent image recognition,each with its own scope of application and accuracy advantages.Quantifying the expansion law of carbonization can construct a durability prediction model based on diffusion theory,providing data support for building structural safety monitoring and maintenance management.
作者
赵伟
ZHAO Wei(Wuhu Kexin Construction Engineering Testing Co.,Ltd.,Wuhu,Anhui,241100,China)
关键词
建筑材料
碳化深度
检测技术
耐久性评估
寿命预测
building materials
depth of carbonization
testing technology
durability assessment
prediction
