Abstract: Composition of lithium slag (LS) powder and its physical and chemical reaction characteristics in cement paste were analyzed by means of XRF, ICP, XRD, TG/DTG, FTIR, SEM-EDS, nitrogen adsorption, etc. The SEM results showed that LS contained layered leached spodumene, rod-like gypsum, porous diatomite, spherical leached spodumene and disk-shaped calcium carbonate. Moreover, LS was a porous material, whose pores were mainly mesopores of 2—50 nm, caused by layered leached spodumene, carbon black, porous diatomite, etc. The speci-fic surface area from BET test and total pore volume in LS were 5 times and 4 times of P·II 52.5 cement respectively, but the average pore size was smaller than that of cement. Layered leached spodumene, gypsum as well as porous diatomite and carbon black were the main sources of high water content of LS. In addition, the large water demand of LS blended concrete was also related to the fact that gypsum, sodium sulfate, sodium carbonate and lithium carbonate can react with aluminate mineral in cement to form more ettringite, etc. LS is an acid slag which can reduce the alkalinity of cement paste mixed with LS. The main elements in LS affecting cement hydration are S, Ca, Si, Al, K, etc., while the influence of Li can be neglected. In addition to gypsum, the reason why LS has relatively high activity is also related to sodium sulfate, sodium carbonate and lithium carbonate in LS.
通讯作者:
张亚梅,东南大学结构工程专业博士,东南大学材料科学与工程学院教授、博士研究生导师、副院长,江苏省先进土木工程材料协同创新中心副主任,2015年东南大学“十佳导师”。1990年毕业于东南大学土木系获学士学位,1998年毕业于东南大学材料系获博士学位。曾任江苏省土木工程材料重点实验室常务副主任。现为ACI CC(美国混凝土学会中国分会)理事,SAC(中国国家标准化委员会)注册ISO TC71专家,中国混凝土与水泥制品协会固废分会建筑固废专委会主任委员,中国土木工程学会再生混凝土分会副主任委员,中国硅酸盐学会水泥化学分会委员,中国混凝土与水泥制品协会预制混凝土构件分会理事,fib(The International Federation for Structural Concrete) TG3.10委员,fib com.9 委员;Cement and Concrete Compo-site编委,Structural Materials (of Frontiers in Built Environment and Mate-rials)编委。日本可持续发展协会客座研究员。负责或参与国家自然科学基金项目、973项目子题、重大工程技术攻关项目及企业合作项目等40多项;曾获教育部科技进步二等奖、华夏建设科技一等奖等。研究方向:固体废弃物的资源化利用技术,碱激发胶凝材料,建筑节能新材料,高性能纤维增强水泥基复合材料等。ymzhang@seu.edu.cn
李保亮, 尤南乔, 曹瑞林, 霍彬彬, 陈春, 张亚梅. 锂渣粉的组成及在水泥浆体中的物理与化学反应特性[J]. 材料导报, 2020, 34(10): 10046-10051.
LI Baoliang, YOU Nanqiao, CAO Ruilin, HUO Binbin, CHEN Chun, ZHANG Yamei. Composition of Lithium Slag Powder and Its Physical and Chemical Reaction Characteristics in Cement Paste. Materials Reports, 2020, 34(10): 10046-10051.
1 Li B L, You N Q, Zhu G R, et al. Materials Reports B: Research Papers,2019,33(12),4072(in Chinese). 李保亮, 尤南乔, 朱国瑞, 等.材料导报:研究篇,2019,33(12),4072. 2 He Z H, Li L Y, Du S G. Construction and Building Materials, 2017, 147,296. 3 Luo Q, Huang S W, Zhou Y X, et al.IOP Conference Series: Earth and Environmental Science, 2017,61(1),012151. 4 Yang C Y. Metallurgy of light metals, Metallurgical Industry Press, China, 2017(in Chinese). 杨重愚. 轻金属金属学, 冶金工业出版社, 2017. 5 Zhang L F.Journal of Liaoning Technical University, 2007, 26(6),877(in Chinese). 张兰芳.辽宁工程技术大学学报, 2007, 26(6),877. 6 Chen D, Hu X, Shi L, et al. Applied Clay Science, 2012, 59-60(5),148. 7 Tan H, Li X, He C, et al. Journal of Wuhan University of Technology-Mater. Sci. Ed., 2015, 30(1),129. 8 Tan H, Zhang X, He X, et al.Journal of Cleaner Production, 2018, 205,536. 9 Li B, Cao R, You N, et al.Construction and Building Materials, 2019, 220,596. 10 Yan P Y, Han J G.Journal of Building Materials, 2004,7(2), 202(in Chinese). 阎培渝, 韩建国.建筑材料学报, 2004,7(2), 202. 11 Liu R J, Chen P. Ferro-alloys, 2009, 40(3),42(in Chinese). 刘荣进, 陈平.铁合金, 2009, 40(3),42. 12 Botto I L. Materials Chemistry and Physics, 1985, 13(5),423. 13 Chan S Y N, Ji X. Cement and Concrete Composites, 1999, 21(4), 293. 14 Han J G, Yan P Y.Journal of the Chinese Ceramic Society, 2010, 38(4),608(in Chinese) 韩建国, 阎培渝. 硅酸盐学报, 2010, 38(4),608. 15 Ismail I, Bernal S A, Provis J L, et al. Cement and Concrete Composites, 2014, 45,125. 16 Naskar M K, Chatterjee M. Materials Letters, 2005, 59(8),998. 17 Yijin L, Shiqiong Z, Jian Y, et al. In:Proceedings of the International Workshop on Sustainable Development and Concrete Technology.Beijing,2004. 18 Taylor H F W. Cement chemistry, Thomas Telford, London, 1997. 19 Qian T T. The preparation and characterization of a shape-stabilized composite phase change material of polyethylene glycol/diatomite with enhanced thermal performance. Ph.D. Thesis,China University of Geoscie-nces (Beijing), China, 2017(in Chinese). 钱婷婷. 硅藻土基定形复合相变储能材料的制备与性能研究.博士学位论文,中国地质大学(北京), 2017. 20 Ergün A.Construction and Building Materials, 2011, 25(2),806. 21 Yllmaz B, Ediz N.Cement and Concrete Composites, 2008, 30(3),202. 22 Degirmenci N, Yilmaz A. Construction and Building Materials, 2009, 23(1), 284. 23 Matschei T, Lothenbach B, Glasser F P. Cement and Concrete Research, 2007, 37(4),551. 24 Lothenbach B, Le Saout G, Gallucci E, et al.Cement and Concrete Research, 2008, 38(6), 848. 25 Thommes M, Kaneko K, Neimark A V, et al.Pure and Applied Chemistry, 2015, 87(9-10),1051. 26 Tseng R L, Wu F C, Juang R S.Carbon, 2003, 41(3),487. 27 Chen J, Lu D Y, Li K, et al.Journal of the Chinese Ceramic Society, 2017, 45(8),1121(in Chinese). 陈捷, 卢都友, 李款, 等.硅酸盐学报, 2017, 45(8),1121. 28 Mantellato S, Palacios M, Flatt R J.Cement and Concrete Research, 2015, 67,286.
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2020, Vol. 34 
