太原理工大学学报2025，Vol.56Issue(2)：207-215,9.DOI:10.16355/j.tyut.1007-9432.20230706
矿渣-硅灰在碱激发作用下固化赤泥的基本工程性能研究
Study on the Basic Engineering Properties of Slag-Silica Ash Solidifying Red Mud under Alkali Excitation
摘要
Abstract
[Purposes]In order to meet the demand for co-utilization of industrial solid waste to solidify red mud,it is proposed to add industrial solid waste materials such as slag and silica ash to red mud,and use NaOH initiation reaction system to co-solidify red mud.[Methods]The strength,re-sistivity,hydration products,and microstructure of solidified red mud were tested by using unconfined compressive strength testing machine,digital AC bridge,X-ray diffractometer,scanning electron mi-croscope,and synchronous thermal analyzer.The effects of curing agent ratio,alkali initiators dosage,and curing age on the basic properties of cured red mud were discussed.[Findings]The results show that the strength of solidified red mud can be improved by both single doping and compound doping of slag and silica ash,and the main function of alkali initiator is to stimulate the potential gelling activity of red mud.By optimizing the test ratio,the effect of compound doping slag and silica ash in red mud is the best.The unconfined compressive strength is used as the evaluation index.When the contents of slag,sodium hydroxide,and silica ash are 15%,3%,and 3%,respectively,the 28 d unconfined compressive strength of solidified red mud reaches up to 13.12 MPa.关键词
赤泥/硅灰/综合利用/胶凝活性/水化机理Key words
red mud/silica ash/comprehensive utilization/gelling activity/hydration mechanism分类
建筑与水利引用本文复制引用
贺高乐,崔雯雯,杨振,赵睿阳,董晓强..矿渣-硅灰在碱激发作用下固化赤泥的基本工程性能研究[J].太原理工大学学报,2025,56(2):207-215,9.基金项目
国家自然科学基金(52378360和5197843) （52378360和5197843）
国家自然科学基金委员会国际合作与交流项目(52281340410) （52281340410）
山西省研究生研究与创新项目(2023KY173) （2023KY173）
