Mechanical Performance and Micro-mechanism of Alkali-activated Binary／Ternary Composite Industrial Waste Residues Cementitious Materials
SONG Weilong1, ZHU Zhiduo1, PU Shaoyun1, SONG Shigong2, PENG Yuyi3, GU Xiaobin4, WEI Yongqiang5
1 Institute of Geotechnical Engineering, School of Transportation, Southeast University, Nanjing 211189, China 2 Rail Transportation Engineering Co., Ltd., China Railway 19th Bureau Group Co., Ltd., Beijing 101300, China 3 Wuxi Metro Group Co., Ltd., Wuxi 214000, China 4 No. 3 Engineering Co., Ltd. of CCCC Third Harbor Engineering Co., Ltd., Nanjing 210011, China 5 Shandong Hanobocar Energy Saving Technology Co., Ltd., Jinan 250101, China
Abstract: To investigate the synergistic effect of multiple industrial waste residues on the mechanical properties of alkali-activated cementitious materials, this paper took water glass and sodium hydroxide as activators, fly ash (FA) as basic powder, ground granulated blast-furnace slag (GGBS) and steel slag (SS) as additive composite powders to produce cementitious materials. The effects of GGBS, SS and GGBS+SS compounded with FA and their contents on the mechanical properties of standard cured paste samples were studied through laboratory tests, and the internal mechanism of microstructure and pore distribution characteristic of hardened paste was analyzed by scanning electron microscopy (SEM) and mercury intrusion porosimetry (MIP) tests. The results show that although the single addition of SS delayed the development of early compressive strength, the composite addition of GGBS and SS could make up for the deficiency of SS, so as to enhance the compressive strength of the material. With 40% GGBS, the 3 d and 28 d compressive strengths of the sample were increased by 152.5% and 81.9%, respectively, and with 40% (GGBS+SS), the 3 d and 28 d compressive strengths of the sample were increased by 89.2% and 72.0%, respectively. The promotion effect of composite addition of GGBS+SS on the early (3 d) compressive strength was weaker than that of the single addition of GGBS, but the effect of composite addition of GGBS+SS on the later (28 d) compressive strength could reach the same level as that of the single addition of GGBS. In addition, the single addition of GGBS increased the ratio of compressive strength to flexural strength and worsened the brittleness of the material, while composite addition of GGBS and SS could weaken the brittleness of the material. Under the same strength, the elastic modulus of the sample of composite addition of GGBS+SS is greater than that of the sample of single addition of GGBS, which has better resistance to deformation. The single addition of SS would reduce the amount of gelling products in the matrix, while the composite addition of GGBS and SS could make the sample obtain a microstructure at the same level of compactness as the sample with single addition of GGBS. The single addition of SS would increase the amount of capillary pores and the pore volume of the matrix, while the composite addition of GGBS and SS could make the capillary pores transform into gel pores with smaller volume, thus improving the mechanical strength of materials at the macro level.
Al-Majidi M H, Lampropoulos A, Cundy A, et al. Construction and Building Materials, 2016, 120, 198.2 Shi C J. Journal of Materials in Civil Engineering, 2004, 16(3), 230.3 Guan Shaobo. Research on active & cementitious capacity of steel-making slag and its concrete properties. Ph.D. Thesis, Wuhan University of Technology, China, 2008 (in Chinese).关少波. 钢渣粉活性与胶凝性及其混凝土性能的研究. 博士学位论文, 武汉理工大学, 2008.4 Liu Zhiwei. Fundamental study on iron recovering from EAF slag and preparing cementitious material from residual mud. Ph. D. Thesis, University of Science and Technology Beijing, China, 2015 (in Chinese).刘智伟. 电炉钢渣铁组分回收及尾泥制备水泥材料的技术基础研究. 博士学位论文, 北京科技大学, 2015.5 Van Deventer J S J, Provis J L, Duxson P. Minerals Engineering, 2012, 29, 89.6 Reddy M S, Dinakar P, Rao B H. Microporous and Mesoporous Mate-rials, 2016, 234, 12.7 Jang J G, Lee H K. Construction and Building Materials, 2016, 102, 260.8 Topark-Ngarm P, Chindaprasirt P, Sata V. Journal of Materials in Civil Engineering, 2015, 27(7), 04014198.9 Sindhunata, Van Deventer J S J, Lukey G C, et al. Industrial & Engineering Chemistry Research, 2006, 45, 3559.10 Gorhan G, Kurklu G. Composites: Part B, 2014, 58, 371.11 Xie Ziling, Li Xian. Concrete, 2014(6), 55 (in Chinese).谢子令,李显. 混凝土, 2014(6), 55.12 Kurklu G. Composites: Part B, 2016, 92, 9.13 Puligilla S, Mondal P. Cement and Concrete Research, 2013, 43(1), 70.14 Zhang Z H, Li L F, Ma X, et al. Construction and Building Materials, 2016, 113, 237.15 Cartwright C, Rajabipour F, Radlinska A. Journal of Materials in Civil Engineering, 2015, 27(7), B4014007.16 Gao Y, Xu J Y, Luo X, et al. Ceramics International, 2016, 42, 11666.17 Yu Qijun, Zhao Sanyin, Huang Jiaqi, et al. Journal of the Chinese Ceramic Society, 2005, 33(7), 871 (in Chinese).余其俊, 赵三银, 黄家琪, 等. 硅酸盐学报, 2005, 33(7), 871.18 Hojati M, Radlinska A. Construction and Building Materials, 2017, 150, 808.19 Lee N K, Kim E M, Lee H K. Construction and Building Materials, 2016, 113, 264.20 Nedeljkovi M, Mladena L, Van Breugel K. Journal of Cleaner Production, 2018, 80, 524.21 Wang Q, Yan P Y, Mi G D. Construction and Building Materials, 2012, 35, 8.22 Yan Handong. Contribution and mechanisms of waste slags characteristics and their multiple combination on high performance of cement based materials. Ph.D. Thesis, Southeast University, China, 2001(in Chinese).严捍东. 废渣特性及其多元复合对水泥基材料高性能的贡献与机理. 博士学位论文, 东南大学, 2001.23 Peng Hui, Cui Chao, Cai Chunsheng, et al. Acta Materiae Compositae Sinica, 2016, 32(12), 2952(in Chinese).彭晖, 崔潮, 蔡春声, 等. 复合材料学报, 2016, 32(12), 2952.24 Ye Jiayuan, Zhang Wensheng, Shi Di. Journal of the Chinese Ceramic Society, 2017, 45(8), 1101(in Chinese).叶家元, 张文生, 史迪. 硅酸盐学报, 2017, 45(8), 1101.25 Li Y P, Shen L, Mirmoghtadaei R, et al. Advances in Civil Engineering Materials, 2017, 6(1), 526.26 Jiang Y, Ling T C, Shi C J, et al. Resources, Conservation & Recycling, 2018, 136, 187.27 Wang Haifeng, Liu Jie, Que Yongsheng, et al. Journal of Materials Science & Engineering, 2016, 34(6), 895(in Chinese).汪海风, 刘杰, 阙永生, 等. 材料科学与工程学报, 2016, 34(6), 895.28 Kumar M L, Revathi V. Construction and Building Materials, 2016, 114, 1.29 Wongpa J, Kiattikomol K., Jaturapitakkul C, et al. Materials and Design, 2010, 31, 4748.30 Lizcano M, Kim H S, Basu S, et al. Journal of Materials Science, 2012, 47(6), 2607.31 El Idrissi A C, Paris M, Roziere E, et al. Materials Today Communications, 2018, 14, 225.32 Gao K, Lin K L, Wang D Y, et al. Construction and Building Materials, 2014, 53, 503.33 Khater H M, El Gawaad H A A. Construction and Building Materials, 2016, 102, 329.34 Ma Y, Hua J, Ye G. Fuel, 2013, 104, 771.35 Chotetanorm C, Chindaprasirt P, Sats V, et al. Journal of Materials in Civil Engineering, 2013, 25(1), 105.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2020, Vol. 34 
