研磨时间与锂渣取代率对砂浆力学性能影响的试验研究  

Experimental study on influence of grinding time and lithium residue on mechanical properties of mortar

作　　者：胡鹏 朱安南[2] 梁炯丰 HU Peng;ZHU Annan;LIANG Jiongfeng(Yangtze River College(Gandong College),East China University of Technology,Fuzhou 344000,China;School of Civil and Architectural Engineering,East China University of Technology,Nanchang 330013,China)

机构地区：[1]东华理工大学长江学院(赣东学院),江西抚州344000 [2]东华理工大学土木与建筑工程学院,江西南昌330013

出　　处：《混凝土》2023年第8期138-141,147,共5页Concrete

基　　金：国家自然科学基金(52068001);江西省教育厅科技项目(GJJ209502)。

摘　　要：为了研究锂渣研磨时间和取代率对锂渣砂浆力学性能的影响,考虑了锂渣研磨时间,取值分别为0、60 min,锂渣等质量取代水泥的比例,分别为0、10%、20%、30%,以及养护龄期7、28 d等因素,设计了不同因素水平下的力学性能试验。结果表明,未经研磨的锂渣掺入,除了养护龄期28d的试件抗折强度大于同等条件下的基准试件抗折强度外,其他情况下,试件的强度均小于同等条件下的基准试件的强度;在养护龄期相同,锂渣取代率相同的条件下,试件强度随研磨时间的增加而增加。在养护龄期28 d,锂渣研磨60 min的条件下,试件强度随锂渣取代率的增加,出现先增加后减小的趋势,当锂渣取代率为20%时,试件强度最大。In order to study the effect of lithium slag grinding time and replacement rate on the mechanical properties of lithium slag mortar,the mechanical property tests under different conditions were designed considering the parameters of lithium slag grinding time,which were taken as 0 min and 60 min respectively,the proportion of lithium slag and other quality replacing cement,which were 0,10%,20%and 30%,and the curing age of 7 d and 28 d.The results show that the strength of the unground lithium slag is lower than that of the reference specimen under the same conditions except that the flexural strength of the specimen at the curing age of 28 d is higher than that of the reference specimen under the same conditions.Under the same curing age and the same replacement rate of lithium slag,the strength of the specimen increases with the increase of grinding time.Under the condition that the curing age is 28 d and the lithium slag is ground for 60 min,the strength of the specimen increases first and then decreases with the increase of the replacement rate of lithium slag.When the replacement rate of lithium slag is 20%,the strength of the specimen is the largest.

关 键 词：锂渣砂浆 研磨时间 锂渣取代率 力学强度 

分 类 号：TU528.01[建筑科学—建筑技术科学]