无机结合料稳定土层防治道路冻害的试验研究  

Experimental investigation of inorganic binder stabilized soil base to prevent and control freezing damage of road

作　　者：张向东[1] 朱光宇[1] 林增华[1] 

机构地区：[1]辽宁工程技术大学土木建筑工程学院,辽宁阜新123000

出　　处：《辽宁工程技术大学学报（自然科学版）》2008年第A01期59-61,共3页Journal of Liaoning Technical University (Natural Science)

基　　金：国家自然科学基金资助项目(50478033);辽宁省交通厅公路管理局科研资助项目(07-04)

摘　　要：为了防治辽西道路冻害的发生,保障交通的正常运输,延长道路的使用年限,在分析辽西地区水文、地质的基础上,对不同水泥、石灰含量的水泥煤渣稳定土和石灰粉煤灰稳定土冻结特性进行了试验研究。试验结果表明,水泥、石灰无机结合料的加入导致土体自上而下的冻结温度梯度减小、土体黏聚力增大,而由冻结作用产生的冻胀、水分迁移能力减弱,冻害发生的概率也相应地降低。综合其它因素,从防治道路冻害的角度来看,水泥重量含量的最优值为6%左右;石灰重量含量的最优值为14%左右。To prevent and control the freezing damage in Liaoxi region, ensure regular transportation and prolong the life-span of the road, based on hydrological geology of Liaoxi region, experiments are conducted about the frozen-in characteristic of the cement cinder stabilized soil and the lime-fly ash stabilization which contains different weight of cement and lime. The result shows that bending with cement and lime inorganic result in soil superincumbent freezing temperature gradient reduces, soil cohesion force increases, whereas by frost action procreative frost upheaval and water migration weakenthe probability of frozen damage decreases accordingly. Concerning all the other relating factors from the viewpoint of prevention and control of the frozen damage of the road, the optimal value of cement is about 6% and lime is about 14%.

关 键 词：风积土 道路 冻害 水泥煤渣稳定土 石灰粉煤灰稳定土 

分 类 号：U418.5[交通运输工程—道路与铁道工程]