镍铁渣粉水泥土的固化机理研究
Study on the Curing Mechanism of Ferronickel Slag Powdered Cement Soil
黄炜炜 1陈峰 2郑铖杰 3李致远2
作者信息
- 1. 福建农林大学 交通与土木工程学院,福建 福州 350100
- 2. 福建江夏学院 工程学院,福建 福州 350108
- 3. 福州大学 紫金地质与矿业学院,福建 福州 350116
- 折叠
摘要
为研究镍铁渣粉掺量对水泥土固化材料的作用机理,通过深入研究镍铁渣粉水泥土的微观性质,更准确地揭示固化过程中的物理和化学变化规律.利用激光粒度试验分析了镍铁渣粉和水泥的粒径分布,发现了镍铁渣粉的离散性和平均粒径均略小于水泥;通过同步热分析试验,研究了镍铁渣粉水泥土的内部结构,结果显示镍铁渣粉填充了水泥土的孔隙,提高了颗粒间的胶结度,从而提高了其抗压强度;通过扫描电子显微镜(SEM)试验微观试验,表明了适量的镍铁渣粉有助于提升水泥土的动静强度,随着养护龄期的增加,水泥土的强度也得到进一步提升.
Abstract
To study the mechanism of using nickel-iron slag powder as a solidification material for ce-ment soil,the microscopic properties of nickel-iron slag powder cement soil were deeply studied to more accurately reveal the physical and chemical changes during the solidification process.The size distribu-tion of nickel-iron slag powder and cement was analyzed by laser particle size test,and it was found that the dispersion and average particle size of nickel-iron slag powder were slightly smaller than that of ce-ment.The internal structure of nickel-iron slag powder cement soil was studied by synchronous thermal analysis experiment,which showed that nickel-iron slag powder filled the pores of cement soil,improved the degree of intergranular bonding,and thus improved its compressive strength.The microscopic experiment by scanning electron microscope(SEM)showed that a moderate amount of nickel-iron slag powder was beneficial to enhance the dynamic and static strength of cement soil,and the strength of ce-ment soil also increased further with the increase of curing age.
关键词
镍铁渣粉/水泥土/固化机理/微观结构Key words
nickel-iron slag powder/cement soil/curing mechanism/microstructure引用本文复制引用
出版年
2024
NETL
NSTL
万方数据