无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2025, Vol. 57 ›› Issue (12): 107-113.doi: 10.19964/j.issn.1006-4990.2024-0637

• 环境·健康·安全 • 上一篇    下一篇

激发剂对电石渣-钢渣复合胶凝材料性能的影响

李志新1(), 徐开东1(), 常仕卓1, 王继娜1, 雪凯旺1, 吴梦雨1, 杨亦龙1, 刘冰倩2, 叶志成1, 朱龙龙1, 何佳乐1   

  1. 1.河南城建学院材料与化工学院,河南 平顶山 467036
    2.河南城建学院土木与交通工程学院,河南 平顶山 467036
  • 收稿日期:2024-11-26 出版日期:2025-12-10 发布日期:2025-12-29
  • 通讯作者: 徐开东(1982— ),男,博士,教授,研究方向为新型建筑材料制备;E-mail:kdxu@huuc.edu.cn
  • 作者简介:李志新(1989— ),男,博士,副教授,研究方向为固废建材化利用;E-mail:li.zhixin1989@163.com
  • 基金资助:
    河南省高等学校重点科研项目(25A560019);河南城建学院国家级大学生创新创业训练计划项目(202411765006);河南省科技攻关项目(232102230119);河南省科技攻关项目(242102321093)

Effect of activators on properties of carbide slag-steel slag composite cementitious materials

LI Zhixin1(), XU Kaidong1(), CHANG Shizhuo1, WANG Jina1, XUE Kaiwang1, WU Mengyu1, YANG Yilong1, LIU Bingqian2, YE Zhicheng1, ZHU Longlong1, HE Jiale1   

  1. 1. School of Material and Chemical Engineering,Henan University of Urban Construction,Pingdingshan 467036,China
    2. School of Civil and Transportation Engineering,Henan University of Urban Construction,Pingdingshan 467036,China
  • Received:2024-11-26 Published:2025-12-10 Online:2025-12-29

摘要:

钢渣中存在大量具有潜在活性的硅酸盐物质,而电石渣的主要成分为Ca(OH)2,可作为碱性激发剂协同制备胶凝材料,然而电石渣-钢渣复合胶凝材料的强度较低,无法满足使用要求。因此,开展石膏掺合料和化学外加剂等激发剂对电石渣-钢渣复合胶凝材料性能的影响,并通过X射线衍射仪(XRD)和傅里叶红外光谱仪(FT-IR)分析物相组成与强度发展之间的关系。结果表明,电石渣取代钢渣增大新拌浆体的触变性,降低其工作性;3种石膏均能提高电石渣-钢渣复合胶凝材料的强度,28 d抗压强度提高幅度高达350%,但激发效果仍弱于化学外加剂,Na2SO4的28 d抗压强度提高幅度达818%。XRD和FT-IR分析表明,过多的电石渣并未参与到反应中,且阻碍钢渣的水化。在m(电石渣)∶m(钢渣)为5∶95时,Na2SO4组的Ca(OH)2峰变弱,而NaOH组仍有较高的Ca(OH)2峰,这表明Na2SO4对电石渣-钢渣复合胶凝材料的激发效果优于NaOH组。研究结果为电石渣-钢渣复合胶凝材料的制备提供理论支持,对钢渣等大宗固废处理也具有重要意义。

关键词: 电石渣, 钢渣, 胶凝材料, 激发剂

Abstract:

There are a large number of potentially active silicate substances in steel slag,and the main component of carbide slag is Ca(OH)2,which can be used as an alkaline activator to synergistically prepare cementitious materials.However,the strength of carbide slag-steel slag composite cementitious materials is very low and cannot meet the requirements for use.Therefore,the effect of activators such as gypsum admixtures and chemical additives on the properties of carbide slag-steel slag composite cementitious materials was investigated,and the relationship between phase composition and strength development was analyzed by X-ray diffraction(XRD) and Fourier transform infrared spectroscopy(FT-IR).The results showed that replacing steel slag with carbide slag increased the thixotropy of the freshly mixed slurry and reduced its workability.All three types of gypsum could improve the strength of carbide slag-steel slag composite cementitious materials,with a strength increase of up to 350% at 28 d.However,the activation effect was still weaker than that of chemical additives,and the 28 d strength increase of Na2SO4 was 818%.XRD and FT-IR analysis showed that excessive calcium carbide slag did not participate in the reaction and hindered the hydration of steel slag.m(carbide slag)∶m(steel slag) was 5∶95,the Ca(OH)2 peak of the Na2SO4 group became weaker,while the NaOH group still had a higher Ca(OH)2 peak,indicating that Na2SO4 had a better excitation effect on the carbide slag-steel slag composite cementitious material than the NaOH group.This study provided theoretical support for the preparation of carbide slag-steel slag composite cementitious materials and was of great significance for the treatment of bulk solid wastes such as steel slag.

Key words: carbide slag, steel slag, cementitious materials, activators

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