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材料导报  2026, Vol. 40 Issue (4): 25020130-8    https://doi.org/10.11896/cldb.25020130
  无机非金属及其复合材料 |
矿渣基胶凝材料固化电厂无机软化污泥机理及配合比优化研究
马超毅1,3, 朱超1,3,*, 郭鑫1,3, 刘超1,2,3,*
1 西安建筑科技大学土木工程学院,西安 710055
2 西安建筑科技大学理学院,西安 710055
3 西安建筑科技大学结构工程与抗震教育部重点实验室,西安 710055
Research on the Mechanism and Mix Proportion Optimization of Inorganic Softening Sludge in Power Plants Solidified with Slag Based Cementitious Materials
MA Chaoyi1,3, ZHU Chao1,3,*, GUO Xin1,3, LIU Chao1,2,3,*
1 School of Civil Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
2 School of Science, Xi’an University of Architecture & Technology, Xi’an 710055, China
3 Key Lab of Structural Engineering and Earthquake Resistance, Ministry of Education (XAUAT), Xi’an 710055, China
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摘要 为解决高含水率、高钙离子含量、高碱性的电厂无机软化污泥固化利用难题,选择碱激发矿渣基胶凝材料固化污泥。通过分析矿渣基胶凝材料固化剂掺量与无侧限抗压强度的内在联系,探究矿渣基胶凝材料固化污泥的机理,并采用响应面法对固化剂配合比进行优化,分析原料掺量间的显著交互作用机制。结果表明:不同原料掺量对固化污泥的抗压强度影响规律差异较大,随着矿渣粉掺量的增加,固化污泥的强度显著提升,而氢氧化钠掺量对强度的影响并不显著;原料掺量变化会影响水化硅铝酸钙(C-A-S-H)、水化硅铝酸钠(N-A-S-H)等水化产物的生成比例,从而影响强度发展;当氢氧化钠掺量为2.5%时,矿渣粉、粉煤灰、硅酸钠的最佳掺入比分别为29.57%、20%、5.62%,其7 d无侧限抗压强度可达4.10 MPa,其中矿渣粉掺量与粉煤灰掺量、粉煤灰掺量与硅酸钠掺量间的交互作用显著。研究结果可为矿渣基胶凝材料固化污泥在道路基层材料的应用提供理论参考。
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马超毅
朱超
郭鑫
刘超
关键词:  固化剂  抗压强度  无机软化污泥  响应面法  配合比    
Abstract: In order to address the challenges in stabilizing and utilizing inorganic softened sludge from power plants characterized by high moisture content, elevated calcium ion concentration, and strong alkalinity, thiswork employed alkali-activated slag-based cementitious materials for sludge solidification. Through systematic analysis of the intrinsic relationship between binder dosage and unconfined compressive strength, elucidated the stabilization mechanism of slag-based cementitious materials. The response surface methodology was implemented to optimize the solidification formula while investigating significant interaction mechanisms among raw material components. The results showed that the influence of different raw material content oncompressive strength of solidified sludge varies greatly. With the increase of granulated blast furnace slag content, the strength of solidified sludge increases significantly, while the effect of sodium hydroxide content on the strength is not significant. The change of raw material content affectes the formation ratio of hydration products such as calcium silicate aluminate hydrate(C-A-S-H) and sodium silicate aluminate hydrate(N-A-S-H), thus affecting the strength development. When the content of sodium hydroxide is 2.5%, the optimal mixing ratios of granulated blast furnace slag, fly ash and sodium silicate are 29.57%, 20% and 5.62%, respectively. Their unconfined compressive strength in 7-days reaches 4.10 MPa. The interaction between granulated blast furnace slag content and fly ash content is significant, and the same is true between fly ash content and sodium silicate content. The findings can provide theoretical reference for the application of slag based cementitious materials to solidify sludge in road base materials.
Key words:  curing agent    compressive strength    inorganic softening sludge    response surface method    mix ratio
出版日期:  2026-02-25      发布日期:  2026-02-13
ZTFLH:  TB332  
基金资助: 陕西省教育厅产业化项目(23JC047);陕西高校青年创新团队(2023-2026);陕西省教育厅重点科学研究计划项目(23JY041)
通讯作者:  * 朱超,博士,西安建筑科技大学土木工程学院讲师。目前主要从事建筑/工业固废高值化利用方面的研究工作。chaozhu@xauat.edu.cn
刘超,博士,西安建筑科技大学土木工程学院教授、博士研究生导师。目前主要从事智能建造3D打印混凝土、大宗固废协同资源化利用、碳捕集/封存等方面的研究工作。chaoliu@xauat.edu.cn   
作者简介:  马超毅,西安建筑科技大学土木工程学院硕士研究生,在刘超教授的指导下进行研究。目前主要研究领域为电厂无机软化污泥资源化利用。
引用本文:    
马超毅, 朱超, 郭鑫, 刘超. 矿渣基胶凝材料固化电厂无机软化污泥机理及配合比优化研究[J]. 材料导报, 2026, 40(4): 25020130-8.
MA Chaoyi, ZHU Chao, GUO Xin, LIU Chao. Research on the Mechanism and Mix Proportion Optimization of Inorganic Softening Sludge in Power Plants Solidified with Slag Based Cementitious Materials. Materials Reports, 2026, 40(4): 25020130-8.
链接本文:  
https://www.mater-rep.com/CN/10.11896/cldb.25020130  或          https://www.mater-rep.com/CN/Y2026/V40/I4/25020130
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