镍渣基地聚物的制备及其性能研究  

Study on preparation and performance of nickel slag based geopolymer

作　　者：张漪颖 谷延霞[2] 王恒[1] ZHANG Yiying;GU Yanxia;WANG Heng(Urban and Rural Construction Institute,Hebei Agricultural University,Baoding 071000,China;College of Science,Hebei Agricultural University,Baoding 071000,China)

机构地区：[1]河北农业大学城乡建设学院,河北保定071000 [2]河北农业大学理学院,河北保定071000

出　　处：《新型建筑材料》2021年第6期51-54,共4页New Building Materials

基　　金：河北省教育厅教学改革课题项目(2019GJJG103)

摘　　要：研究了激发剂种类和模数对镍渣基地聚物抗压强度、抗折强度和干燥收缩的影响。结果表明,可通过碱激发技术实现对镍渣的资源化利用,不仅可解决镍渣堆置的环境问题,还可产生经济效益。采用模数为1.0的硅酸钠(钾)作为激发剂时,镍渣基地聚物的强度发展最快,28 d抗压、抗折强度分别为23.2、4.9 MPa;采用氢氧化钠作为激发剂时,镍渣基地聚物的干燥收缩最小,28 d干燥收缩为0.65 mm/m。In this paper,the effects of activator modulus and activator type on the compressive strength,flexural strength and drying shrinkage of nickel slag based geopolymer were studied.The results showed that the utilization of nickel slag could be realized by alkaline activation technology,which can not only solve the environmental problem of nickel slag accumulation,but also generate economic benefits.When sodium(potassium)silicate with modulus of 1.0 was used as the activator,the strength of nickel slag based geopolymer were the highest,the compressive strength and flexural strength were 23.2 MPa and 4.9 MPa after curing for 28 days,respectively.When sodium hydroxide was used as the activator,the drying shrinkage of the nickel slag based geopolymer was the smallest,the drying shrinkage after curing for 28 days was 0.65 mm/m.

关 键 词：镍渣 地聚物 抗压强度 抗折强度 干燥收缩 

分 类 号：TU526[建筑科学—建筑技术科学]