摘要
新型加固材料可与黄土中矿物成分发生一系列物化反应(填充、胶结、水化产物胶结、离子交换和聚合物包裹等),显著改善黄土的持水特性和微观孔隙结构,改良其物理力学特性。为全面总结梳理现有新型固化材料的加固机理和固化黄土物理力学特性,本文总结分析了目前已被证实可有效加固黄土的多种新型固化材料,并根据化学组成和加固机理将其分为无机类、有机类、复合类和生物类,对其物质组分、加固机理、固化效果和应用现状展开分析,发现今后新型黄土加固材料的相关研究还应侧重以下几个方面:(1)以工程应用为导向,深化加固基础理论研究;(2)以增效降本为导向,研发复合型加固材料;(3)以绿色环保为导向,完善加固土标准与规范。
The new reinforcement materials can have a series of physicochemical reactions(filling,cementation,hydration product cementation,ion exchange and polymer encapsulation,etc.)with the mineral components in loess,which can significantly improve the water⁃holding properties and microscopic pore structure of loess,and improve its physico⁃mechanical properties.In order to comprehensively summarize and sort out the reinforcement mechanism of existing new reinforcement materials and the physical and mechanical properties of cured loess,this paper summarizes and analyzes a variety of new curing materials that have been proved to be effective in improving loess,and classifies them into inorganic,organic,composite and biological categories according to their chemical compositions and reinforcement mechanisms,and analyzes the material components,reinforcement mechanisms,curing effects and application status,and finds that the research related to new loess reinforcement materials should also focus on the following aspects in the future.It is found that future research on new loess reinforcement materials should also focus on the following aspects:(1)engineering application⁃oriented,deepen the basic theory of reinforcement research;(2)efficiency and cost reduction oriented,research and development of composite reinforcement materials;(3)green environmental protection oriented,improve the reinforcement of soil standards and specifications.
作者
李建东
李白威
张延杰
王旭
刘德仁
牛亚强
何菲
LI Jiandong;LI Baiwei;ZHANG Yanjie;WANG Xu;LIU Deren;NIU Yaqiang;HE Fei(School of Civil Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;National and Provincial Joint Engineering Laboratory of Road&Bridge Disaster Prevention and Control,Lanzhou 730070,China)
出处
《材料导报》
北大核心
2025年第S1期359-369,共11页
Materials Reports
基金
国家自然科学基金(42362033
52268058)
甘肃省产业支撑计划项目(2023CYZC-34)
甘肃省青年科学基金(22JR5RA369)
甘肃省教育厅青年博士支持项目(2024QB-053)
兰州交通大学专利转化引导基金(ZH2023008)。
关键词
黄土
固化剂
加固机理
力学特性
离子交换
loess
soil stabilizer
reinforcement mechanism
mechanical property
ion exchange
