留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

高碳铬铁合金渣用于C40混凝土试验研究

杨飞 孙晓敏

杨飞, 孙晓敏. 高碳铬铁合金渣用于C40混凝土试验研究[J]. 钢铁钒钛, 2021, 42(3): 119-124. doi: 10.7513/j.issn.1004-7638.2021.03.018
引用本文: 杨飞, 孙晓敏. 高碳铬铁合金渣用于C40混凝土试验研究[J]. 钢铁钒钛, 2021, 42(3): 119-124. doi: 10.7513/j.issn.1004-7638.2021.03.018
Yang Fei, Sun Xiaomin. Experimental study of high carbon ferrochrome slag used in C40 concrete[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 119-124. doi: 10.7513/j.issn.1004-7638.2021.03.018
Citation: Yang Fei, Sun Xiaomin. Experimental study of high carbon ferrochrome slag used in C40 concrete[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 119-124. doi: 10.7513/j.issn.1004-7638.2021.03.018

高碳铬铁合金渣用于C40混凝土试验研究

doi: 10.7513/j.issn.1004-7638.2021.03.018
基金项目: 河南省教育厅研究项目(2020-ZZJH-133)
详细信息
    作者简介:

    杨飞(1980—),男,河南郑州人,硕士,讲师,通讯作者,研究方向:土木工程和水利水电工程。E-mail:377614384@qq.com

  • 中图分类号: X757

Experimental study of high carbon ferrochrome slag used in C40 concrete

  • 摘要: 以高碳铬铁合金渣作为粗细集料来配制C40混凝土,通过对含高碳铬铁合金渣混凝土抗压强度、抗氯离子渗透性能和抗碳化性能等进行试验研究,对六价铬离子Cr(VI)在水泥混凝土中固化效果进行了评价。结果表明:高碳铬铁渣骨料混凝土养护28 d的抗压强度高于普通C40碎石混凝土。由于高碳铬渣的表面多孔和较高的孔隙率,导致用高碳铬渣制备的混凝土抗氯离子渗透性能和抗碳化性能优于对照组,而混凝土浸泡90 d的铬离子表面浸出浓度低于标准规定铬离子0.05 mg/L的临界允许浓度,从应用和环境的角度初步说明高碳铬铁合金渣作为骨料配制C40混凝土基本可行。
  • 图  1  高碳铬铁渣XRD图谱

    Figure  1.  XRD patterns of high carbon ferrochrome slag

    图  2  高碳铬铁渣形貌

    Figure  2.  Photograph image of high carbon ferrochrome slag

    图  3  铬铁渣混凝土抗压强度

    Figure  3.  Compressive strength of high carbon ferrochrome slag concrete

    图  4  铬铁渣混凝土抗氯离子扩散系数

    Figure  4.  Chloride ion diffusion coefficient of high carbon ferrochrome slag concrete

    图  5  铬铁渣混凝土碳化深度

    Figure  5.  Carbonation depths of high carbon ferrochrome slag concrete

    图  6  铬铁渣混凝土扫描形貌

    Figure  6.  SEM image of high carbon ferrochrome slag concrete

    表  1  原材料的化学成分

    Table  1.   Chemical components of raw materials used in this work %

    种类SiO2Al2O3CaOMgOFe2O3Cr2O3Na2OK2OSO3LOI
    水泥21.505.8659.812.232.850.200.672.063.70
    粉煤灰56.3826.373.100.336.452.200.381.051.32
    高碳铬铁渣32.1119.546.7223.983.238.270.170.081.352.23
    下载: 导出CSV

    表  2  碎石和铬铁渣的物理性质

    Table  2.   Physical properties of gravel and ferrochrome slag

    集料含泥量/%表观密度/(kg·m−3)松散堆积密度/(kg·m−3)紧密堆积密度/(kg·m−3)孔隙率/%压碎值/%
    碎石0.227001450162046.28.7
    铬铁渣0.1322016801 86048.15.3
    下载: 导出CSV

    表  3  高碳铬渣混凝土配合比

    Table  3.   Mix proportion of high carbon ferrochrome slag concrete kg/m3

    编号
    水泥
    粉煤灰
    细集料粗集料
    减水剂
    河砂铬铁渣碎屑碎石铬铁渣
    C0340607750115501604.0
    CH1340600775115501604.2
    CH2340607750011551604.4
    CH3340600775011551604.8
    下载: 导出CSV

    表  4  铬铁渣混凝土的表面铬离子浸出浓度

    Table  4.   Surface chrome leaching concentration of high carbon ferrochrome slag concrete

    试样浸出浓度/(mg·L−1)
    28 d56 d90 d
    CH10.0310.0190.012
    CH20.0380.0240.018
    CH30.0480.0290.025
    下载: 导出CSV
  • [1] Meng Fansheng. Pollution charateristics of soils polluted by chromium slag in China[J]. Environmental Pollution & Control, 2016,38(6):50−53. (孟凡生. 中国铬渣污染场地土壤污染特征[J]. 环境污染与防治, 2016,38(6):50−53.
    [2] Yang Xiangxin, Li Tao. Discussion on technology of production high carbon ferrochrome of low carbon level[J]. Ferro-alloys, 2010,41(1):15−18. (杨香新, 李涛. 低碳级高碳铬铁生产工艺探讨[J]. 铁合金, 2010,41(1):15−18.
    [3] Xu Yanzhong, Qin Xuna, Liu Xianghong, et al. The study of chromium pollution and ecological fffects[J]. Environmental Science and Technology, 2002,25(S1):8−9. (徐衍忠, 秦绪娜, 刘祥红, 等. 铬污染及其生态效应[J]. 环境科学与技术, 2002,25(S1):8−9.
    [4] Zhang Shaohua, Liu Laibao, Tan Kefeng, et al. Sintering research on lightweight aggregate produced from high carbon ferrochrome slag[J]. Journal of Wuhan University of Technology, 2014,36(8):12−16. (张韶华, 刘来宝, 谭克锋, 等. 利用高碳铬铁合金渣制备轻骨料的实验研究[J]. 武汉理工大学学报, 2014,36(8):12−16.
    [5] Acharya Prasanna K, Patro Sanjaya K. Utilization of ferrochrome wastes such as ferrochrome ash and ferrochrome slag in concrete manufacturing[J]. Waste Management & Research, 2016:0734242X16654751.
    [6] Shi H S, Kan L L. Study on the properties of chromium residue-cement matrices (CRCM) and the influences of superplasticizers on chromium(VI)-immobilising capability of cement matrices[J]. Journal of Hazardous Materials, 2009,162(2−3):913−919. doi: 10.1016/j.jhazmat.2008.05.117
    [7] Ding Jianchu, Li Congjing. Study on the substitution of chromium slag and barium slag for natural sand to prepare concrete[J]. Recycling Research, 2004,(4):29−31. (丁建础, 李崇景. 铬渣钡渣代替天然砂制作混凝土的研究[J]. 再生资源研究, 2004,(4):29−31.
    [8] (程海丽, 张亮, 董瑞龙, 等. 高碳铬铁合金渣透水混凝土试验研究[J].再生资源与循环经济, 2018,11(1):30-32.)

    Cheng Haili, Zhang Liang, Dong Ruilong, et al. Experimental study on high carbon ferrochrome slag permeable concrete[J].Renewable Resources & Circular Economy, 2018,11(1):30-32.
    [9] Panda C R, Mishra K K. Environmental and technical assessment of ferrochrome slag as concrete aggregate material[J]. Construction and Building Materials, 2013,(49):262−267.
    [10] Tang Luping, Nilsson Lars-Olof. Chloride binding capacity and binding isotherms of OPC pastes and mortars[J]. Cement and Concrete Research, 1993,23(2):247−253. doi: 10.1016/0008-8846(93)90089-R
    [11] Morandeau A, Thiéry M, Dangla P. Investigation of the carbonation mechanism of C-H and C-S-H in terms of kinetics, microstructure changes and moisture properties[J]. Cement and Concrete Research, 2014,56:153−170. doi: 10.1016/j.cemconres.2013.11.015
    [12] Kanagaraj J, Senthilvelan T, Panda R C, et al. Eco-friendly waste management strategies for greener environment towards sustainable development in leather industry: A comprehensive review[J]. Journal of Cleaner Production, 2015,89:1−17. doi: 10.1016/j.jclepro.2014.11.013
  • 加载中
图(6) / 表(4)
计量
  • 文章访问数:  189
  • HTML全文浏览量:  10
  • PDF下载量:  22
  • 被引次数: 0
出版历程
  • 收稿日期:  2020-02-17
  • 刊出日期:  2021-06-10

目录

    /

    返回文章
    返回