工业废弃木质素固化土特性及其在岩土工程中的应用进展  

Properties of lignin-stabilized industrial wastes and their application progress in geotechnical engineering

作　　者：何怡[1] 张迎新 李成龙 张涛 HE Yi;ZHANG Yingxin;LI Chenglong;ZHANG Tao(College of Civil Engineering,Luoyang Institute of Science and Technology,Luoyang 471023,China;Luoyang Tianzhuo Engineering Quality Inspection Co.Ltd.,Luoyang 471002,China;Petroleum Engineering Technology Research Institute of Shengli Oilfield,SINOPEC,Dongying 257000,China;College of Transportation Engineering,Nanjing Tech University,Nanjing 210009,China)

机构地区：[1]洛阳理工学院土木工程学院,河南洛阳471023 [2]洛阳天卓工程质量检测有限公司,河南洛阳471002 [3]中国石化胜利油田分公司石油工程技术研究院,山东东营257000 [4]南京工业大学交通运输工程学院,江苏南京210009

出　　处：《南京工业大学学报（自然科学版）》2024年第4期397-406,共10页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：河南省教育厅、河南省高等学校重点科研项目(22A580001);国家自然科学基金青年项目(41807260)。

摘　　要：为明确工业废弃木质素在岩土工程中的应用现状和存在问题,探寻用于突破现有木质素改良土体技术的科学方法和工程措施,笔者在已有研究基础上,介绍了木质素在岩土工程中的应用状况,探讨了木质素与土体间的相互作用机制,指出了需要解决的关键问题和下一步研究的方向。结果表明:木质素对砂性土和黏性土均具有提高力学性能、抵抗水分侵入的效果,土体的韧性特征得到明显提高;木质素产生的胶结作用是土体微观结构和宏观工程性质改善的根本原因,阐明胶结物质的生成机制是揭示其改良土体机制的关键;木质素固化土在恶劣环境中的耐久性能需进一步提升,相应的施工工艺和工程防护措施仍不完备;对木质素进行化学改性,增强其胶结与耐久性能,系统研究土颗粒胶结与改良土的应力应变特征以及扩宽木质素的土体处置对象均是值得继续深入研究的科学问题。To clarify the application status and limitation of lignin-based industrial wastes in geotechnical engineering,and to explore scientific methods and engineering measures to break through the existing lignin-improved soil technology,the paper,based on existing research,introduces the application status of lignin in geotechnical engineering,discusses the interaction mechanism between lignin and soil,and finally points out the key problems that need to be solved and the direction of further research.The results show that lignin improves the mechanical performance as well as the resistance against moisture intrusion of both sandy soils and clayey soils,significantly improving the toughness of the soil.The cementation effect of lignin is the fundamental reason for the improvement of the soil s microstructure and macro-engineering properties.Clarifying the mechanism of cementitious material generation is the key task for revealing the mechanism of soil improvement.The durability of lignin-stabilized soil in harsh environments needs to be enhanced,and the corresponding construction techniques and engineering protection measures are still insufficient.Further study can be focused on chemical modification of lignin to improve its cementation and durability,stress-strain characteristics of soil particle cementation and improved soil,and expanding the treatment targets of lignin in soil stabilization.

关 键 词：工业副产品 木质素 工程性质 可持续发展 岩土工程 胶结作用 

分 类 号：TU473.1[建筑科学—结构工程]