Freeze-thaw performance of geocell- and cement- stabilized base courses

加拿大是一个幅员辽阔的国家，气候多样，大部分土地都暴露在季节性冰冻天气中。 季节性霜冻引起冻融循环，导致道路早期损坏，降低其使用寿命。 水泥稳定基层（CTB）是一种常用的加固方法，而土工格室基层（GRB）是一种新兴的加固技术，在实际工程中已显示出良好的应用前景。 目前，对CTB和GRB在冻融条件下的性能对比分析还比较缺乏。 本研究利用UVic中的冻融-平板加载耦合装置，探讨冻融对CTB和GRB性能的影响。 这项研究的结果是确定条件下，GRB表现优于CTB和指导工程师选择一个适当的加固方案，在加拿大的季节性冻土路面。

Canada is a vast country containing many climates, with its majority of land exposed to the seasonal frozen weathers. The seasonal frost induces cycles of freeze and thaw, causing early damage to roadways and decreasing their service life. Cement treat base (CTB) is a conventional and most commonly method used to strengthen the road layers in frost susceptible soils, while geocell reinforced bases (GRB) are a relatively emerging technology, which has shown promise in practical applications. At present, the comparative analysis of the performance of CTB and GRB under freeze and thaw is fairly lacking. Utilizing a coupled freeze-thaw and plate loading device housed in UVic, this research project is to elucidate the effect of freeze-thaw on the performance of both CTB and GRB. The outcomes of this research are to identify the conditions in which GRB performs better than CTB and guide the engineer to select a proper reinforcement solution for seasonal frost roadways in Canada.