材料研究学报  2012, Vol. 26 Issue (3): 295-301

研究论文 本期目录 | 过刊浏览 |

用粉煤灰和铁尾矿制备高强混凝土

刘佳,  倪文, 于淼

北京科技大学金属矿山高效开采与安全教育部重点实验室 北京 100083

Preparation of High–strength Concrete by Using Fly Ash and Iron Ore Tailings as Major Raw Materials

LIU Jia, NI Wen, YU Miao

State Key Laboratory of High–Efficient Mining and Safety of Metal Mines, Ministry of Education of China, University of Science and Technology Beijing, Beijing 100083

刘佳 倪文 于淼. 用粉煤灰和铁尾矿制备高强混凝土[J]. 材料研究学报, 2012, 26(3): 295-301.
. Preparation of High–strength Concrete by Using Fly Ash and Iron Ore Tailings as Major Raw Materials[J]. Chin J Mater Res, 2012, 26(3): 295-301.

摘要 参考文献 相关文章 Metrics 全文: PDF(1075 KB)   摘要: 以粉煤灰和铁尾矿为主要原料制备高强混凝土, 用X射线衍射(XRD)和扫描电镜(SEM)分析材料的水化产物和微观形貌, 研究了铁尾矿掺量、水胶比、高效减水剂用量对高强混凝土力学性能的影响。结果表明, 混凝土的抗压强度为100.1 MPa, 抗折强度为20.6 MPa, 固体废弃物掺量达86.4%；在水化过程中大量C--S--H凝胶和钙矾石的生成为细骨料混凝土提供了早期强度, 火山灰活性反应对Ca(OH)2的消耗是混凝土后期强度持续提高的主要原因。 关键词 ： 无机非金属材料,  高强混凝土,  高效减水剂,  水胶比     Abstract：A high–strength concrete material was prepared by using fly ash and iron ore tailings as major raw materials. Reaction products and microstructure of hydrated harden samples of the high–strength concrete material were analyzed by XRD and SEM methods, and the influences of several factors, such as proportion of iron ore tailing, water–binder ratio and dosage of super plasticizer, on the mechanical properties of the high–strength concrete material were investigated. The results show that the prepared concrete material is composed of large ratio of solid waste up to 86.4% (mass fraction), and its compressive strength reached to 100.1 MPa with a flexural strength of 20.6 MPa. The early strength of the samples was developed by the formation of large amount of C–S–H gel and ettringite during the early hydration stage. The continued development of strength in the last stage was mainly caused by pozzolanic reactions of the waste materials which leaded consumption, reduction and disappearance of Ca(OH)2 in the system. Key words： inorganic non–metallic materials    high–strength concrete material    superplasticizer    water–binder ratio 收稿日期: 2012-03-12      ZTFLH:  TB321   基金资助: 国家高技术研究发展计划2012AA062405资助项目。 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 刘佳 44.8K 链接本文: https://www.cjmr.org/CN/      或      https://www.cjmr.org/CN/Y2012/V26/I3/295 1 MENG Yuehui, NI Wen, ZHANG Yuyan, Current state of ore tailings reusing and its future development in China, China Mine Engineering, 39(5), 4(2010) (孟跃辉, 倪 文, 张玉燕, 我国尾矿综合利用发展现状与前景, 中国矿山工程,  39(5), 4(2010)) 2 LIU Yongguang, WANG Xiaolei, Development of comprehensive utilization of iron tailings as resource, Morden Mining, (2), 28(2010) (刘永光, 王晓雷,铁尾矿资源化综合利用的发展, 现代矿业, (2), 28(2010)) 3 ZHANG Chongmiao,Discussion on the relationship between comprehensive utilization of mineral resources and environmental protection, Mining & Metallurgy, 12(2), 22(2003) (张崇淼, 矿产资源综合利用与环境保护之关系的探讨, 矿冶,  12(2), 22(2003)) 4 YAO Minggang, WANG Jinlong, REN Ruichen, Study and comprehensive utilization of iron ore tailings resources in the Western Liaoning Province, Mining Engineering, 9(4), 53(2011) (姚明刚, 王金龙, 任瑞晨, 辽宁西部地区铁尾矿资源化综合利用与研究, 矿业工程,  9(4), 53(2011)) 5 LIU Anping, ZHANG Jianfeng, Actuality and problem of comprehensive utilization of tailings at meishan, Meishan Science and Technology, (1), 3(2011) (刘安平, 张剑锋, 梅山尾矿综合利用现状及存在问题, 梅山科技, (1), 3(2011)) 6 XING Jun, LV Rong, SONG Shouzhi, Study on the controlled crystallization of glass–ceramics from metallic tailings, Multipurpose Utilization of Mineral Resources, (2), 38(2001) (邢 军, 吕 荣, 宋守志, 铁尾矿微晶玻璃的组成实际与晶化研究, 矿产综合利用, (2), 38(2001)) 7 HUANG Deqi, ZHENG Jianfei, Perform technology research of ordinary dry–mixed mortar made of tailing sand, Fujian Construction Science & Technology, (1), 58(2011) (黄德棋, 郑剑飞, 尾矿砂制备普通干混砂浆的技术性能研究, 福建建设科技, (1), 58(2011)) 8 CHEN Yongliang, ZHANG Yimin, Chen Tiejun, Preparation of eco–friendly construction bricks from hematite tailings, Construction and Building Materials, (25), 2107(2011) 9 YI Zhonglai, SUN Henghu, WEI Xiuquan, Iron ore tailings used for the preparation of cementitious material by compound thermal activation, International Journal of Minerals, Metallurgy and Materials, 16, 355(2009) 10 LI Jing, WANG Qi, LIU Jihui, Synthesis process of forsterite refractory by iron ore tailings, Journal of Environmental Sciences Supplement, 21, S92(2009) 11 LI Chao, SUN Henghu, BAI Jing, Innovative methodology for comprehensive utilization of iron ore tailings Part 1: The recovery of iron from iron ore tailings using magnetic separation after magnetizing roasting, Journal of Hazardous Materials, 174, 71(2010) 12 LI Chao, SUN Henghu, YI Zhonglai, Innovative methodology for comprehensive utilization of iron ore tailings Part 2: The residues after iron recovery from iron ore tailings to prepare cementitious material, Journal of Hazardous Materials, 174, 78(2010) 13 NI Wen, ZHENG Yongchao, GUO Zhennil, A method of making high strength structural materialwith iron ore tailing, China Patent, 200710177294, 2008–05–21 (倪 文, 郑永超, 郭珍妮, 一种利用铁尾矿制备高强结构材料的方法, 中国专利, 200710177294. 2008--05--21) 14 ZHENG Yongchao, NI Wen, GUO Zhenni, Experimental research on high strength structural material made with iron tailing, New Build Mater, (3), 4(2009) (郑永超, 倪 文, 郭珍妮, 铁尾矿制备高强结构材料的实验研究, 新型建筑材料, (3), 4(2009)) 15 ZHENG Yongchao, NI Wen, XU Li, Mechanochem ical activation of iron ore tailings and preparation of high–strength construction materials, J Univ Sci Technol Beijing, 32(4), 504(2010) (郑永超, 倪 文, 徐  丽, 铁尾矿的机械力化学活化及制备高强结构材料, 北京科技大学学报,  32(4), 504(2010)) 16 WU Junyu, ZENG Rongshu, NI Wen, Research development of high calcium fly ash used in building mateirais, Bulletin of the Chinese Ceramic Society, 26(4), 753(2007) (武俊宇, 曾荣树, 倪 \ \ 文, 高钙粉煤灰在建材行业的研究进展, 硅酸盐通报,  26(4), 753(2007)) [1] 宋莉芳, 闫佳豪, 张佃康, 薛程, 夏慧芸, 牛艳辉. 碱金属掺杂MIL125的CO2 吸附性能[J]. 材料研究学报, 2023, 37(9): 649-654. 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