长春工程学院学报（自然科学版）2025，Vol.26Issue(2)：42-47,6.DOI:10.3969/j.issn.1009-8984.2025.02.007
冻融循环作用下水泥-纤维复合处理粉质黏土地基的力学性能研究
Study on the Mechanical Properties of Cement-Fiber Composite Treatment of Silty Clay Foundation under Freeze-Thaw Cycles
摘要
Abstract
In order to improve the stability and durability of building foundation pits in seasonally frozen soil areas,a composite reinforcement method of adding cement and fiber to silty clay is proposed to further ex-plore the frost resistance of silty clay in building foundation pits.The research results indicate that the e-lastic modulus and unconfined compressive strength of soil treated with cement-fiber composite materials decrease with the increasing initial water content and freeze-thaw cycles.During the first freeze-thaw cycle,the mechanical properties underwent significant changes and stabilized after 6 freeze-thaw cycles.For com-posite treated soil with a cement content of 6%,the optimal content of basalt fiber and polypropylene fiber is 1.0%and 0.15%-0.25%,respectively.Under the same water content and freeze-thaw cycles,the un-confined compressive strength of 0.15%polypropylene fiber composite soil is higher than that of 1.0%ba-salt fiber composite soil.It provides a reference for the study of mechanical properties of silty clay in build-ing foundation pit under freeze-thaw cycles.关键词
冻融循环/水泥/纤维/建筑基坑/粉质黏土Key words
freeze-thaw cycle/cement/fiber/building foundation pit/silty clay分类
建筑与水利引用本文复制引用
杨沛,赵启飞..冻融循环作用下水泥-纤维复合处理粉质黏土地基的力学性能研究[J].长春工程学院学报（自然科学版）,2025,26(2):42-47,6.基金项目
安徽省高等学校省级质量工程项目(2023jnds040)安徽省高校自然科学研究项目(2024AH050181) （2023jnds040）
