华侨大学学报（自然科学版）2024，Vol.45Issue(2)：248-254,7.DOI:10.11830/ISSN.1000-5013.202310023
碱激发富镁镍渣淤泥固化土USC及机理分析
USC and Mechanism Analysis of Alkali-Activated Magnesium-Rich Nickel Silt-Cured Soil
摘要
Abstract
The effect of factors such as mass fraction of curing agent(dosage of curing agent),mass fraction of sludge water and alkali-activator type on the unconfined compressive strength(UCS)of silt-cured soil was investigated,and the microstructure of silt-cured soil was analyzed using scanning electron microscope(SEM),X-ray energy dispersive spectroscope(EDS)analysis,X-ray diffraction(XRD)and mercury pressure instru-ment(MIP),and the mechanism of the action was revealed.The experimental results show that the silt soil is solidified effectively by the alkali-activated magnesium-rich nickel residue curing agent,and the highest strength reaches 702 kPa.Sodium magnesium silicate aluminate polymer gel product(N-M-A-S)is generated from the hydration reaction of silt-cured soil,which makes the structure of the silt-cured soil more compact by bonding soil particles and filling the pores of the soil body.关键词
富镁镍渣/碱激发/淤泥/无侧限抗压强度/微观机理Key words
magnesium-rich nickel residue/alkali-activation/silt/unconfined compressive strength/micro-mechanisms分类
建筑与水利引用本文复制引用
许利惟,陈韩,蒋远,吴毅轩,刘雨菲,毛文宫..碱激发富镁镍渣淤泥固化土USC及机理分析[J].华侨大学学报（自然科学版）,2024,45(2):248-254,7.基金项目
福建省自然科学基金资助项目(2023J01937) （2023J01937）
福建省住房和城乡建设厅科学技术计划项目(2022-K-214) （2022-K-214）
大学生创新创业训练计划项目(202310388028) （202310388028）
