工程地质学报2026，Vol.34Issue(3)：966-974,9.DOI:10.13544/j.cnki.jeg.2025-0114
两种纤维加筋固化土的抗冻融性能评价
EVALUATION ON FREEZE-THAW RESISTANCE OF TWO TYPES OF SH AGENT-LIME-FIBER-SOIL
摘要
Abstract
Embankment frost heave and road collapse problems are caused by freezing in winter and melting in spring.Using lime,SH agent,polypropylene fiber,and basalt fiber stabilized soil,freeze-thaw effects on the compressive strength,elastic modulus,and microstructure of two types of SH agent-lime-fiber-soil were studied.The correlation between mechanical properties and microstructure parameters was analyzed,and the freeze-thaw durability of the two types of SH agent-lime-fiber-soil was evaluated.The results showed that the optimal contents of SH agent,polypropylene fiber,and basalt fiber were 1.5％,0.2％,and 0.2％,respectively.As freeze-thaw cycles increased,the compressive strength and elastic modulus of the two types of SH agent-lime-fiber-soil decreased;the particle area fraction and particle equivalent diameter decreased,while the particle aspect ratio increased.Microcracks in the soil gradually increased and extended into through-microcracks,leading to a looser soil structure.The correlation degrees between the compressive strength and elastic modulus of the two types of SH agent-lime-fiber-soil and the particle area fraction,equivalent diameter,and aspect ratio decreased in sequence.Fiber reinforcement mainly enhanced mechanical properties by increasing the area ratio.Compared with SH agent-lime-basalt fiber-soil,under the same freeze-thaw cycles,SH agent-lime-polypropylene fiber-soil has higher compressive strength and elastic modulus,and better freeze-thaw resistance.Adding 8％lime,1.5％SH agent,and 0.2％polypropylene fiber to the soil can improve its freeze-thaw durability and meet the filling requirements of embankment soil.关键词
纤维加筋固化土/抗冻融性能/抗压强度/弹性模量/微观结构/灰色关联法Key words
Fiber reinforced soil/Freeze-thaw resistance/Compressive strength/Elastic modulus/Micro-structure/Grey correlation method分类
建筑与水利引用本文复制引用
魏丽,裴海璋,柴寿喜,李锐..两种纤维加筋固化土的抗冻融性能评价[J].工程地质学报,2026,34(3):966-974,9.基金项目
天津市科技计划项目(资助号:20YDTPJC00930).This research is supported by the Science and Technology Plan Project of Tianjin(Grant No.20YDTPJC00930). （资助号:20YDTPJC00930）
