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为了实现武广铁路客运专线混凝土工程使用寿命百年的目标,常采用耐久性混凝土技术。提出应用优质原材料,合理胶结材料用量和低水胶比的配制思路,辅助加强施工过程控制、养护维修以及跟踪监测等手段来实现。耐久性混凝土具有显著抗氯离子渗透性能、抗裂性、护筋性、耐蚀性、抗冻性、耐磨性以及抗碱—骨料反应性等性能。应用具有上述特征的耐久性混凝土施工重要的桥梁隧道等混凝土结构物,取得了令人满意的结果。
In order to achieve the Wuhan-Guangzhou Passenger Dedicated Line of concrete engineering service life of one hundred years of goals, often using durable concrete technology. Put forward the application of high quality raw materials, reasonable amount of cementitious materials and low water cement ratio preparation ideas, to help strengthen the construction process control, maintenance and tracking and monitoring and other means to achieve. Durable concrete has significant resistance to chloride ion permeability, crack resistance, bar protection, corrosion resistance, frost resistance, abrasion resistance and alkali-aggregate reactivity properties. Concrete structures with important bridge tunnels, such as bridge tunnels, are constructed using durable concrete with these characteristics and satisfactory results have been obtained.