通过干湿循环－硫酸盐侵蚀加速试验方法，研究了高性能混凝土抗压强度的经时演变规律，采用统计回归方法分析试验数据，得到了混凝土强度平均值和标准差的经时变化函数，建立了硫酸盐侵蚀环境下高性能混凝土抗压强度的经时变化函数概率模型。结果分析表明：硫酸盐侵蚀环境下，混凝土的抗压强度平均值呈现出显著的二次多项式经时变化规律；抗压强度标准差的经时变化过程表现为典型的一阶指数增长函数。

 Accelerating experimental method of wet-dry sulfate erosion was applied to investigate the law of concrete strength changing with time. By means of statistics and regression, functions of mean value and standard deviation of concrete strength were obtained to establish the probability model of compressive strength of high-performance concrete exposed to the sulfate environment. The results show that: under the sulfate exposure, the mean value of concrete compressive strength presents the relationship of quadratic polynomial with time ； the function presenting typical exponential growth can be used to express the relation of standard deviation of compressive strength with time.