矿产综合利用Issue(6)：114-119,6.DOI:10.3969/j.issn.1000-6532.2023.06.017
水玻璃改性水泥对细粒尾矿胶结性能的影响
Effects of Water Glass Modified Cement on the Performances of Cemented Fine Tailings
摘要
Abstract
This is an essay in the field of ceramics and composites.To study the effect of water glass on the hydration reaction of cement and performances of cemented fine tailings backfilling materials(CTB),compressive strength test,X-ray diffraction(XRD),thermogravimetric(TG),scanning electron microscope(SEM)were used to investigate the effects of water glass dosage on the compressive strength of CTB,hydration products,and microstructure of cement pastes.The results showed that,for a given range,the addition of water glass consumed the Ca(OH)2 in samples and generated large amounts of calcium silicate hydrate(C-S-H)gels,forming a compact microstructure,which was beneficial for the rapid development of strength.However,the further increase in the water glass dosage did not significantly improve the quantities of C-S-H gels because the Ca(OH)2 in cement system was completely consumed,leading to a weak enhancement in the strength of CTB.关键词
陶瓷及复合材料/尾矿胶结充填/水玻璃/抗压强度/C-S-H凝胶Key words
Ceramics and composites/Cemented tailings backfilling/Water glass/Compressive strength/C-S-H gels分类
矿业与冶金引用本文复制引用
李若昀,刘庆,冯艳斐,吕宪俊,王俊祥..水玻璃改性水泥对细粒尾矿胶结性能的影响[J].矿产综合利用,2023,(6):114-119,6.基金项目
山东省自然科学基金(ZR2019BEE057) （ZR2019BEE057）
山东科技大学人才引进科研启动基金项目(2019RCJJ007) （2019RCJJ007）
贵州省教育厅青年科技人才成长项目(黔教合KY字[2018]466) （黔教合KY字[2018]466）
