安徽地质2024，Vol.34Issue(3)：220-225,6.
钢渣-粉煤灰-脱硫石膏地质聚合物的工程地质特性研究
Engineering geological characteristics of steel slag-fly ash-desulfurized gypsum geopolymer
摘要
Abstract
A composite cementitious material is prepared with steel slag,fly ash and desulfurized gypsum as main raw materials,NaOH and sodium silicate as alkali-activator. The effects of the modulus of alkali-activator and the ratio of raw materials on the mechanical properties of the composite material were studied,and the hydration mechanism was analyzed by using the results of X-ray diffraction (XRD)and scanning electron microscopy(SEM). The results show that when the addition of desulfurized gypsum is 10％,the fly ash to steel slag ratio is 1:1,and the modulus of alkali-activator is 1.25,the composite has maximum flexural and compressive strengths,5.65 MPa and 20.40 MPa,respectively,XRD and SEM test results show that with the above mix ratio,the consumption of quartz is the largest,the raw material is fully hydrated,and a large amount of hydrated C-A-S-H gel wrapped ettringite is produced,with dense structure.关键词
钢渣/粉煤灰/脱硫石膏/工程地质特性/微观分析Key words
steel slag/fly ash/desulfurization gypsum/engineering geological characteristics/microscopic analysis分类
天文与地球科学引用本文复制引用
高宇航,胡广青,李书钦,占国艳..钢渣-粉煤灰-脱硫石膏地质聚合物的工程地质特性研究[J].安徽地质,2024,34(3):220-225,6.基金项目
安徽省先进建筑材料重点实验室开放课题"多种固废协同制备复合胶凝体系材料的合成机制与应用研究"(编号:JZCL2204ZR),安徽省科技重大专项"基于多固废协同作用的选冶渣场(库)污染源头控制技术研究"(编号:201903a07020010)和中央级公益性科研院所基本科研业务费专项"生物炭负载纳米零价铁对镉污染物的吸附效应及作用机制研究"(编号:1630122024016)联合资助 （编号:JZCL2204ZR）
