含硫酸盐半刚性基层材料对路基温缩性能的影响研究  

Study on Influence of Semi-rigid Base Material with Sulfate on Temperature Shrinkage Performance of Subgrade

作　　者：蒲翠玲 PU Cui-ling(Shanxi Transportation Survey&Design Institute Co..Ltd.,Taiyuan,Shanxi 030032,China)

机构地区：[1]山西省交通规划勘察设计院有限公司,山西太原030032

出　　处：《山西交通科技》2022年第1期19-22,共4页Shanxi Science & Technology of Transportation

摘　　要：详细介绍了几种掺加硫酸钠的半刚性基层材料的选取和成型方法,以及室内温缩研究的步骤及过程,得出了在最佳含水量下几种盐渍化半刚性基层材料的温度收缩及温度变化的关系曲线。从研究结果得出在半刚性基层材料中掺加硫酸钠能有效地抑制温缩裂缝的产生。对于不同无机结合料稳定土,推荐了一个较合适的含盐量范围。This paper particularly introduces the selection and formation methods of semi-rigid base material with sodium sulfate,and steps and process of indoor temperature shrinkage study.The correlation curve between the temperature shrinkage and temperature change of several salinized semi-rigid base materials under the optimal water content was obtained,which can be concluded that adding sodium sulfate into semi-rigid base materials can effectively control the generation of the temperature shrinkage cracks.A suitable range of salt content is recommended for different inorganic binder stabilized soils.

关 键 词：盐渍土半刚性基层 温度降低 温度收缩 体积膨胀 

分 类 号：U416.223[交通运输工程—道路与铁道工程]