期刊论文

中文

无机盐工业

1006-4990

2022

54

8

125-131

10.19964/j.issn.1006-4990.2021-0669

湖南省教育厅重点项目（21A0286）； 湖南省高校创新平台开放基金项目（20K111）；

本校为第一机构

研究利用高炉矿渣(BFS)、粉煤灰(FA)作为原材料制备地质聚合物。以氢氧化钠与水玻璃作为碱激发剂,在碱激发条件下制备地质聚合物固化二价铅离子(Pb~(2+))。研究Pb~(2+)的掺量对固化体强度的影响,并通过浸出毒性实验、X射线衍射分析(XRD)、红外光谱分析(FT-IR)、扫描电镜(SEM)等表征分析、防辐射实验测试,探究其固化效果与固化机理。结果表明,高炉矿渣-粉煤灰基地质聚合物与Pb~(2+)具有良好的相容性,且固化体在28 d最高抗压强度可以达到43 MPa,Pb~(2+)的添加质量分数为1%时能提高其固化体的强度。浸出实验表明,固化体对质量分数为1% Pb~(2+)的固化效率在97%以上。微观分析认为大部分重金属是以羟...

Using of blast furnace slag(BFS)and fly ash(FA)as raw materials to prepare geopolymers was studied.Using NaOH and water glass as the alkali activator,the geopolymer solidified Pb2+was prepared under the condition of alkali exci⁃tation.The effect of Pb2+content on the strength of the cured body was studied,and its curing effect and curing mechanism were explored through leaching toxicity test,X-ray diffraction analysis(XRD),infrared spectrum analysis(FT-IR),elec⁃tronic scanning electron microscope(SEM)and other characterization analysis and ra...