四川轻化工大学学报（自然科学版）2025，Vol.38Issue(2)：82-90,9.DOI:10.11863/j.suse.2025.02.10
盾构渣土制备流态固化土的试验研究
Experimental Study on Preparation of Fluid Solidified Soil From Shield Muck
摘要
Abstract
With the rapid development of Hefei metro construction,how to greenly dispose the large quantities of waste soil has become a big problem.Taking the shield muck of Guzhen Road Subway Station of Hefei S1 Line as the background,alkali activated slag is used to partially replace cement as the curing agent to solidify the shield muck into fluid solidified soil.Through laboratory tests,the physical and chemical properties of shield muck and the flow characteristics of solidified soil are obtained.The factors including curing agent type,age,liquid-solid ratio and dosage that have influences on the compressive strength of solidified soil are studied.At the same time,the physical and mechanical test and analysis are carried out on the solidified muck under different dry-wet cycles.The test results show that the fluidity is more affected by the liquid-solid ratio,and the fluidity decreases with the increase of slag proportion.The liquid-solid ratio is controlled within 0.43～0.47 by cement solidification,and 0.47～0.51 by slag mixed with cement solidification.The compressive strength of the solidified soil becomes the highest when the slag and cement ration is 4/6,reaching 5 MPa,and the mass loss in the dry and wet cycle is divided into three stages:the mass losses slowly in the early stage,losses rapidly in the middle stage,and tends toward stabilization in the later stage.And the strength loss of slag group is less than 10%.Moreover,the solidification effect of slag instead of partial cement is better than that of single cement,which provides an experimental reference for the practical application of shield muck in Hefei area.关键词
盾构渣土/流态固化土/固化剂/力学特性/干湿循环Key words
shield muck/fluid solidified soil/curing agent/mechanical properties/dry and wet cycle分类
建筑与水利引用本文复制引用
王成斌,程桦,闫超,林键..盾构渣土制备流态固化土的试验研究[J].四川轻化工大学学报（自然科学版）,2025,38(2):82-90,9.基金项目
安徽省自然科学基金青年项目(2208085QE142) （2208085QE142）
安徽建筑大学校引进人才及博士启动基金项目(2022QDZ29) （2022QDZ29）
安徽省智能地下探测技术研究院主任基金项目(AHZT2022ZR01) （AHZT2022ZR01）
安徽省省级大学生创新创业训练计划项目(S202310878039) （S202310878039）
