硅酸盐通报2017，Vol.36Issue(7)：2321-2325,5.
镍矿渣地聚合物的制备及其增韧改性
Preparation and Toughening Modification of Nickel Slag-Blast Furnace Slag Geopolymers
摘要
Abstract
Nickel slag,a class of industrial wastes,was used as a major solid precursor in conjunction with an alkaline activator to produce the geopolymers.The mechanical properties of geopolymers were improved through the inclusion of blast furnace slag and fiber,and the strengthening and toughening effects were investigated by characterizing the pore structure and microstructure of the binders.The results show that an increase of compressive strength and the refinement of the inner pore structure of the geopolymers are mainly due to blast furnace slag addition.In comparison with the 50 ℃ 7 d-cured nickel slag-based geopolymers,the compressive strength of geopolymers with 50％blast furnace slag content increases by 209.7％,and the total porosity and maximal distribution pores diameter reduced by 32.7％and 53.1％,respectively.The inclusion of fiber is efficient in improving the toughness of the binders.When the fiber dosage is 1.6％,the flexural strength and impact work of the 50 ℃ 7 d-cured geopolymers increase by 42.0％and 114.3％,respectively.Pull-out and tensile fracture of the fiber in the binders consumed the loading energy,resulting in an improvement of the crack resistance of geopolymers.关键词
镍渣/矿渣/地聚合物/增韧改性Key words
nickel slag/slag/geopolymer/toughening modification分类
化学化工引用本文复制引用
诸华军,吴其胜,周阳,杨涛,马雪,徐俊,杨唐军..镍矿渣地聚合物的制备及其增韧改性[J].硅酸盐通报,2017,36(7):2321-2325,5.基金项目
国家自然科学基金(51502259,51572234) （51502259,51572234）
住房和城乡建设部科学技术项目(2015-K4-007) （2015-K4-007）
江苏省"六大人才高峰"项目(2016-XCL-070) （2016-XCL-070）
核废物与环境安全国防重点学科实验室开放基金项目(13zxnk04) （13zxnk04）
江苏省生态建材与环保装备协同创新中心项目(GX2015305,CP201506) （GX2015305,CP201506）
