浅谈地下工程混凝土耐久性及施工中关键环节控制措施

Elementary Discussion on Durability of Underground Engineering Concrete and Control Measures for Key Links in Construction

混凝土的耐久性是指在正常使用条件下,混凝土抵抗各种环境介质及外界破坏因素的影响,长期保持良好的使用性能和外观完整性,从而维持混凝土结构的安全和正常使用的能力。影响混凝土耐久性的因素很多,不同环境介质及外界因素对混凝土的破坏不同。对混凝土冻融、碳化、钢筋锈蚀等影响混凝土耐久性的因素做了分析,并简述施工中关键环节控制。

The durability of concrete means the use performance and appearance integrity kept well for a long time to resist various environmental mediums and external destroying factors under the condition of normal service so as to maintain the safety of concrete structure and the capacity of its normal service.There are many factors influencing the durability of concrete. The different environmental mediums and external factors have the different damages to concrete. The article analyzes the factors of concrete freeze thawing, carbonization and steel bar corrosion to influence the durability of concrete, and briefly introduces the control of key links in construction.