铺面水泥混凝土冻融环境量化研究

Quantification Research on the Frost Environment of Pavement Cement Concrete

在分析铺面混凝土冻融环境特点的基础上 ,提出了表征铺面混凝土冻融循环的量化指标及其定义 .根据有限差分方法计算得到的我国主要城市铺面混凝土内部年逐时温度 ,进行了铺面混凝土冻融环境的量化指标统计分析 ,建立了铺面混凝土年冻融循环次数的预估方程 。

Basing on analyzing the characteristics of pavement frost environment, utilizing the annual hourly temperatures within pavement concrete calculated by finite difference method, the natural freeze-thaw cycle of pavement concrete and its parameters are defined and quantitatively analyzed. So an equation, which calculates the annual times of pavement concrete natural freeze-thaw cycle was developed and the cycle parameters, including temperature decreasing speed of freezing, length of freezing time and lowest freezing temperature were statistically calculated.