[1]元成方,陈 阳,王世博,等.激发方式对再生砖微粉活性的影响与机理研究[J].郑州大学学报(工学版),2022,43(06):97-103.[doi:10.13705/j.issn.1671-6833.2022.06.005]
　YUAN Chengfang,CHEN Yang,WANG Shibo,et al.Study on the Effect and Mechanism of Excitation Modes on the Activity of Recycled Brick Micropowder[J].Journal of Zhengzhou University (Engineering Science),2022,43(06):97-103.[doi:10.13705/j.issn.1671-6833.2022.06.005]
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激发方式对再生砖微粉活性的影响与机理研究()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
43
期数:
2022年06期
页码:
97-103
栏目:
出版日期:
2022-09-02

文章信息/Info

Title:
Study on the Effect and Mechanism of Excitation Modes on the Activity of Recycled Brick Micropowder
作者:
元成方1 ;  陈 阳1 ;  王世博2 ;  魏逸然1
1.郑州大学土木工程学院;2.河南城建土木结构工程研究中心有限公司;

Author(s):
YUAN Chengfang1;  CHEN Yang1;  WANG Shibo2;  WEI Yiran1
1.School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China; 
2.Henan Urban Construction Civil Structure Engineering Research Center Co., Ltd., Zhengzhou 450000, China
关键词:
Keywords:
recycled brick micropowder;  activation excitation;  microanalysis;  mechanism;  activity index
分类号:
TU528. 1；X798
DOI:
10.13705/j.issn.1671-6833.2022.06.005
文献标志码:
A
摘要:
废弃黏土砖经破碎、球磨后形成的再生微粉具有潜在活性,通过活性激发可部分取代水泥制备混凝土,以实现废弃资源再利用。 研究分析了机械激发、化学激发和高温激发 3 种方式对再生微粉活性的激发效果,利用 SEM 和 XRD 技术分析揭示了材料微观结构和作用机理。 结果表明:采用机械激发、化学激发和高温激发对再生微粉进行活性激发后,材料的活性指数均有不同程度提高。 其中,球磨45 min 机械激发和 800 ℃ 高温激发效果较好,活性指数最高,均达到了 71%,化学激发 方式下活性指数最高为 65%。 综合考虑激发效果、能耗、经济性与实际操作的可行性,建议选用球磨 45 min 作为再生砖微粉的最佳活性激发方式。
Abstract:
The recycled micropowder formed by crushing and ball milling waste clay bricks has potential activity. It can partially replace cement to prepare concrete through activation excitation, so as to realize the reuse of waste resources. This study explored the excitation effect of mechanical excitation, chemical excitation and high temperature excitation on the activity of recycled brick micropowder, and SEM and XRD technology analysis were used to reveal the material microstructure and mechanism of action. The results showed that after using mechanical excitation, chemical excitation, and high temperature excitation to activate the regenerated micropowder, the activity index of the material was improved to varying degrees, and there was a good correlation between different excitation methods and the activity index. Among them, the 45 min mechanical excitation of ball milling and the high temperature excitation of 800 ℃ had better effects, with the highest activity index reaching 71%, and the highest activity index in the chemical excitation mode was 65%. Considering the excitation effect, energy consumption, economy and practical operation feasibility, it is recommended to use ball milling for 45 min as the best activation method for recycled brick micropowder.

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更新日期/Last Update: 2022-10-03