水力发电2025，Vol.51Issue(6)：110-115,6.
碱激发锂渣复合改良花岗岩残积土试验研究
Experimental Study on Alkali-excited Lithium Slag Composite Modified Granite Residual Soil
摘要
Abstract
In order to find a rational utilization method of lithium slag,the lithium slag is used to replace part of cement to improve granite residual soil.The improvement effect of lithium slag and alkali-excited lithium slag on granite residual soil is studied through unconfined compressive strength tests.The results show that,(a)when the total dosage of curing agent is 5%and the replacement rate of lithium slag is less than 30%,the compressive strength of the modified lithium slag-cement composite sample decreases less than that of the modified cement sample;(b)when the replacement rate of lithium slag exceeds 30%,the compressive strength of the modified lithium slag-cement composite sample will be greatly reduced;(c)the compressive strength of alkali-excited modified lithium slag-cement composite sample increases with the increase of sodium silicate content,and slows down when the content of alkali activator exceeds 3%;and(d)the compressive strength of modified lithium slag-cement composite sample with 3%alkali activator is about 25%higher than that without adding.Based on the experiment,the optimum ratio of alkali-excited modified lithium slag-cement composite sample is obtained,which can provide reference for the application of lithium slag in subgrade filling.关键词
路基填筑/花岗岩残积土/改良/锂渣/水泥/碱激发/抗压强度Key words
subgrade filling/granite residual soil/improvement/lithium slag/cement/alkali excitation/compressive strength分类
建筑与水利引用本文复制引用
李扬波,陈旭,陈怿旸,吴波,林炼伟,何昌春..碱激发锂渣复合改良花岗岩残积土试验研究[J].水力发电,2025,51(6):110-115,6.基金项目
江西省教育厅科学技术研究项目(GJJ210705) （GJJ210705）
国家自然科学基金资助项目(52278397,52168055) （52278397,52168055）
江西省交通运输厅科技项目(2022H0028) （2022H0028）
