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锰尾矿基胶凝材料配方优化及水化机理分析

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张树光, 王华庆, 李江山. 锰尾矿基胶凝材料配方优化及水化机理分析[J]. 环境工程学报, 2017, 11(1): 535-540. doi: 10.12030/j.cjee.201509102
引用本文: 张树光, 王华庆, 李江山. 锰尾矿基胶凝材料配方优化及水化机理分析[J]. 环境工程学报, 2017, 11(1): 535-540. doi: 10.12030/j.cjee.201509102
shu
ZHANG Shuguang, WANG Huaqing, LI Jiangshan. Formula optimization and hydration mechanism analysis of cementitious material prepared with manganese tailings[J]. Chinese Journal of Environmental Engineering, 2017, 11(1): 535-540. doi: 10.12030/j.cjee.201509102
Citation: ZHANG Shuguang, WANG Huaqing, LI Jiangshan. Formula optimization and hydration mechanism analysis of cementitious material prepared with manganese tailings[J]. Chinese Journal of Environmental Engineering, 2017, 11(1): 535-540. doi: 10.12030/j.cjee.201509102
shu

锰尾矿基胶凝材料配方优化及水化机理分析

  • 1.

    辽宁工程技术大学土木与交通学院, 阜新, 123000

  • 2.

    中国科学院武汉岩土力学研究所, 武汉, 430071

  • 基金项目:

    国家水体污染控制与治理科技重大专项（2011ZX07104-002-02）

    国家自然科学基金资助项目（51274109）

  • 中图分类号: X753

Formula optimization and hydration mechanism analysis of cementitious material prepared with manganese tailings

  • 1.

    Institute of Civil and Traffic Engineering, Liaoning Technical University, Fuxin 123000, China

  • 2.

    Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China

  • Fund Project:

摘要

  • 摘要: 为研究低品位锰尾矿胶凝活性，将生石灰、氢氧化钠、水玻璃和石膏等激发剂添加到湖南永州低品位碳酸锰尾矿中，采用正交实验研究不同激发剂及掺量对锰尾矿基胶凝材料抗压强度和软化系数的影响，探究其潜在胶凝活性激发的最佳配方。实验结果表明，当生石灰、水玻璃、石膏掺量分别为10%、1.5%和4%时，胶凝材料净浆试体的各个龄期抗压强度最大，其中28 d抗压强度达到4.91 MPa，软化系数达到0.74。XRD、DTA和SEM微观实验发现：锰尾矿基胶凝材料主要水化产物为钙矾石和水化硅酸钙凝胶，随龄期持续增多并相互交织搭接，使试体内部结构逐渐致密，缝隙减少，提高了试体抗压强度和软化系数，因此，该激发剂可有效激发锰尾矿潜在胶凝活性。
    Abstract: The cementitious activity of low-grade manganese tailings was investigated by adding quicklime, sodium hydroxide, sodium silicate and gypsum to low-grade tailings of manganese carbonate, which were procured from Yongzhou city. The effects of different activators and their contents on the compressive strength and softening coefficient were studied by orthogonal testing in order to obtain the optimum proportion at which the potential cementitious activity of manganese tailings can be stimulated. The results showed that the compressive strength of the slurry during various curing periods reached the maximum when the contents of lime, sodium silicate and gypsum were 10%, 1.5% and 4%, respectively. The 28 d compressive strength reached 4.91 MPa and the softening coefficient was 0.74.Detailed structural analyses using XRD, DTA and SEM techniques showed that the main hydration products were ettringite and hydrated calcium silicate gel, which continued to increase with prolonged curing and became interleaving and lapping, thereby reducing the internal gap. The resulting dense internal structure improved the compressive strength and softening coefficient. Therefore, the activator is able to stimulate the potential cementitious activity of manganese tailings.
  • [1] 赵云良, 张一敏, 陈铁军, 等. 采用低硅赤铁矿尾矿制备蒸压砖[J]. 中南大学学报(自然科学版), 2013, 44(5):1760-1765
    [2] 葛会超. 新型复合胶结材料的性能及在尾矿胶结中的应用研究[D]. 青岛:山东科技大学, 2007
    [3] 张帅. 新型水淬渣基尾矿胶结材料的制备与应用研究[D]. 青岛:山东科技大学, 2008
    [4] 祝丽萍, 倪文, 张旭芳, 等. 赤泥-矿渣-水泥基全尾砂胶结充填料的性能与微观结构[J]. 北京科技大学学报, 2010, 32(7):838-842
    [5] 黄绪泉, 侯浩波, 周旻, 等. 钢渣-矿渣-氟石膏基胶结材固结铜尾矿性能[J]. 土木建筑与环境工程, 2014, 36(1):138-142
    [6] ERCIKDI B, CIHANGIR F, KESIMAL A, et al. Utilization of industrial waste products as pozzolanic material in cemented paste backfill of high sulphide mill tailings[J]. Journal of Hazardous Materials, 2009, 168(2/3):848-856
    [7] WANG Xinmin, ZHAO Bin, ZHANG Qinli. Cemented backfill technology based on phosphorous gypsum[J]. Journal of Central South University of Technology, 2009, 16(2):285-291
    [8] CIHANGIR F, ERCIKDI B, KESIMAL A, et al. Utilisation of alkali-activated blast furnace slag in paste backfill of high-sulphide mill tailings:Effect of binder type and dosage[J]. Minerals Engineering, 2012, 30(2):33-43
    [9] POTGIETER J. H., POTGIETER S. S. Mining backfill formulations from various cementitious and waste materials[C]//Proceedings of the 5th International Symposium on Cement and Concrete. Shanghai:Chinese Society of Silicate Cement, 2003
    [10] 袁润章. 胶凝材料学[M].2版. 武汉:武汉理工大学出版社, 1996:160-165
    [11] 张大捷, 田晓峰, 侯浩波, 等. 矿渣胶凝材料固化软土的力学性状及机制[J]. 岩土力学, 2007, 28(9):1987-1991
    [12] 刘晓敏, 盛谦, 陈建, 等. 大型地下洞室群地震模拟振动台试验研究(Ⅰ):岩体相似材料配比试验[J]. 岩土力学, 2015, 36(1):83-88
    [13] 黄绪泉, 侯浩波, 朱熙, 等. 矿渣-粉煤灰-氟石膏胶结材激发及毒性[J]. 土木建筑与环境工程, 2011, 33(5):150-156
    [14] YI Zhonglai, SUN Henghu, LI Chao, et al. Relationship between polymerization degree and cementitious activity of iron ore tailings[J]. International Journal of Minerals, Metallurgy, and Materials, 2010, 17(1):116-120
    [15] LI Chao, SUN Henghu, YI Zhonglai, et al. Innovative methodology for comprehensive utilization of iron ore tailings:Part 2:The residues after iron recovery from iron ore tailings to prepare cementitious material[J]. Journal of Hazardous Materials, 2010, 174(1/2/3):78-83
    [16] NEHDI M, TARIQ A. Stabilization of sulphidic mine tailings for prevention of metal release and acid drainage using cementitious materials:A review[J]. Journal of Environmental Engineering and Science, 2007, 6(4):423-436
    [17] HUANG Xiaoyan, RANADE R, NI Wen, et al. Development of green engineered cementitious composites using iron ore tailings as aggregates[J]. Construction and Building Materials, 2013, 44:757-764
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出版历程
  • 收稿日期:  2015-11-05
  • 刊出日期:  2017-01-05
张树光, 王华庆, 李江山. 锰尾矿基胶凝材料配方优化及水化机理分析[J]. 环境工程学报, 2017, 11(1): 535-540. doi: 10.12030/j.cjee.201509102
引用本文: 张树光, 王华庆, 李江山. 锰尾矿基胶凝材料配方优化及水化机理分析[J]. 环境工程学报, 2017, 11(1): 535-540. doi: 10.12030/j.cjee.201509102
shu
ZHANG Shuguang, WANG Huaqing, LI Jiangshan. Formula optimization and hydration mechanism analysis of cementitious material prepared with manganese tailings[J]. Chinese Journal of Environmental Engineering, 2017, 11(1): 535-540. doi: 10.12030/j.cjee.201509102
Citation: ZHANG Shuguang, WANG Huaqing, LI Jiangshan. Formula optimization and hydration mechanism analysis of cementitious material prepared with manganese tailings[J]. Chinese Journal of Environmental Engineering, 2017, 11(1): 535-540. doi: 10.12030/j.cjee.201509102
shu

锰尾矿基胶凝材料配方优化及水化机理分析

  • 1.  辽宁工程技术大学土木与交通学院, 阜新, 123000
  • 2.  中国科学院武汉岩土力学研究所, 武汉, 430071
  • 收稿日期:  2015-11-05
基金项目:

国家水体污染控制与治理科技重大专项（2011ZX07104-002-02）

国家自然科学基金资助项目（51274109）

摘要: 为研究低品位锰尾矿胶凝活性，将生石灰、氢氧化钠、水玻璃和石膏等激发剂添加到湖南永州低品位碳酸锰尾矿中，采用正交实验研究不同激发剂及掺量对锰尾矿基胶凝材料抗压强度和软化系数的影响，探究其潜在胶凝活性激发的最佳配方。实验结果表明，当生石灰、水玻璃、石膏掺量分别为10%、1.5%和4%时，胶凝材料净浆试体的各个龄期抗压强度最大，其中28 d抗压强度达到4.91 MPa，软化系数达到0.74。XRD、DTA和SEM微观实验发现：锰尾矿基胶凝材料主要水化产物为钙矾石和水化硅酸钙凝胶，随龄期持续增多并相互交织搭接，使试体内部结构逐渐致密，缝隙减少，提高了试体抗压强度和软化系数，因此，该激发剂可有效激发锰尾矿潜在胶凝活性。

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