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

作　　者：黄炜炜 陈峰[2] 郑铖杰 李致远[2] HUANG Weiwei;CHEN Feng;ZHENG Chengjie;LI Zhiyuan(College of Transportation and Civil Engineering,Fujian Agriculture and Forestry University,Fuzhou,Fujian 350100,China;College of Engineering,Fujian Jiangxia University,Fuzhou,Fujian 350108,China;Zijin School of Geology and Mining,Fuzhou University,Fuzhou,Fujian 350116,China)

机构地区：[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

出　　处：《河北工程大学学报(自然科学版)》2024年第6期45-52,共8页Journal of Hebei University of Engineering:Natural Science Edition

基　　金：福建省自然科学基金资助项目(2023J01130625,2022J01964)。

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。To study the mechanism of using nickel-iron slag powder as a solidification material for cement 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 distribution 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 cement.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 cement 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 

分 类 号：TU528[建筑科学—建筑技术科学]