混凝土按耐久性使用年限设计的可行性

Possibility of Design Concrete According to expected Life Time

耐久性是高性能混凝土的重要性能 ,而耐久性混凝土的设计按现行的混凝土性能的测试结果还很难实现 ,因为这些指标还未能和耐久性的“久”即“时间”因素联系起来 ,所以还不能预测所制造混凝土究竟能耐多久 ?故无法推知其使用年限。本文从影响混凝土耐久性的抗渗、抗冻、抗碳化及氯离子渗透等性能入手 ,通过理论分析和实验观测与时间建立联系 。

? In the paper,the factors that affect concrete's durability such as permeability,freeze thawing,the ability of anti chorine iron penetration and anti carbonate are analyzed.On the base of theoretical analyses and experiments,the relationship between durability and employment time is discussed,the result shows the possibility of designing specific concrete according to expected life time. 〔