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再生混凝土粉和再生砖粉活化技术研究进展
Research Progress on Activation Technology of Recycled Concrete Powder and Recycled Brick Powder
2023年第3期
再生混凝土粉;再生砖粉;机械活化;热活化;碳化活化;碱激发;活化机理
Recycled concrete powder(RCP); Recycled brick powder(RBP); Mechanical activation; Thermal activation; Carbonization activation; Alkali activation; Activation mechanism
2023年第3期
10.19761/j.1000-4637.2023.03.096.06
住房与城乡建设部科技研发项目(2021-K-123);浙江省自然科学基金项目(LGF22E080035)。
方维炯1,宣晓鑫1,赵建明2,崔新忠3,梁超锋3,高越青3
1.绍兴市城市建设投资集团有限公司,浙江 绍兴312000;2.绍兴市城投再生资源有限公司,浙江 绍兴312000;3.绍兴文理学院 土木工程学院,浙江 绍兴 312000

方维炯1,宣晓鑫1,赵建明2,崔新忠3,梁超锋3,高越青3

方维炯,宣晓鑫,赵建明,等.再生混凝土粉和再生砖粉活化技术研究进展[J].混凝土与水泥制品,2023(3):96-101

FANG W J,XUAN X X,ZHAO J M,et al.Research Progress on Activation Technology of Recycled Concrete Powder and Recycled Brick Powder[J].China Concrete and Cement Products,2023(3):96-101

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摘   要:介绍了再生混凝土粉(RCP)和再生砖粉(RBP)的基本特性,分析了机械活化、热活化、碳化活化、碱激发等活化方式对RCP和RBP活性的影响,并探讨了相关活化机理,总结了各活化方式的优点与不足,可为再生微粉活化方式的优选提供参考。 Abstract: The basic characteristics of recycled concrete powder (RCP) and recycled brick powder (RBP) are introduced. The effects of mechanical activation, thermal activation, carbonation activation, alkali activation and other activation technologies on the activities of RCP and RBP are analyzed, and the relevant activation mechanisms are discussed. The advantages and disadvantages of each activation technology are summarized, which can provide a reference for the selection of recycled micro powder activation technology.
英文名 : Research Progress on Activation Technology of Recycled Concrete Powder and Recycled Brick Powder
刊期 : 2023年第3期
关键词 : 再生混凝土粉;再生砖粉;机械活化;热活化;碳化活化;碱激发;活化机理
Key words : Recycled concrete powder(RCP); Recycled brick powder(RBP); Mechanical activation; Thermal activation; Carbonization activation; Alkali activation; Activation mechanism
刊期 : 2023年第3期
DOI : 10.19761/j.1000-4637.2023.03.096.06
文章编号 :
基金项目 : 住房与城乡建设部科技研发项目(2021-K-123);浙江省自然科学基金项目(LGF22E080035)。
作者 : 方维炯1,宣晓鑫1,赵建明2,崔新忠3,梁超锋3,高越青3
单位 : 1.绍兴市城市建设投资集团有限公司,浙江 绍兴312000;2.绍兴市城投再生资源有限公司,浙江 绍兴312000;3.绍兴文理学院 土木工程学院,浙江 绍兴 312000

方维炯1,宣晓鑫1,赵建明2,崔新忠3,梁超锋3,高越青3

方维炯,宣晓鑫,赵建明,等.再生混凝土粉和再生砖粉活化技术研究进展[J].混凝土与水泥制品,2023(3):96-101

FANG W J,XUAN X X,ZHAO J M,et al.Research Progress on Activation Technology of Recycled Concrete Powder and Recycled Brick Powder[J].China Concrete and Cement Products,2023(3):96-101

摘要
参数
结论
参考文献
引用本文

摘   要:介绍了再生混凝土粉(RCP)和再生砖粉(RBP)的基本特性,分析了机械活化、热活化、碳化活化、碱激发等活化方式对RCP和RBP活性的影响,并探讨了相关活化机理,总结了各活化方式的优点与不足,可为再生微粉活化方式的优选提供参考。

Abstract: The basic characteristics of recycled concrete powder (RCP) and recycled brick powder (RBP) are introduced. The effects of mechanical activation, thermal activation, carbonation activation, alkali activation and other activation technologies on the activities of RCP and RBP are analyzed, and the relevant activation mechanisms are discussed. The advantages and disadvantages of each activation technology are summarized, which can provide a reference for the selection of recycled micro powder activation technology.

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(1)机械活化方式主要通过改善再生微粉的颗粒形貌和粒径分布来增强再生微粉的活性,但实际选用时需综合考虑经济、节能与环境效益。
(2)热活化方式会使再生微粉中的碳酸盐分解,生成更多活性离子,从而提高再生微粉的活性,但同时会导致再生微粉出现质量损失,释放CO2,不利于节能减排目标的实现。
(3)碳化活化方式主要通过生成硅胶和CaCO3来增强再生微粉结构的致密性,同时提升水化产物间的黏结性能,从而提高再生微粉的活性。但目前针对碳化活化对再生微粉微观结构全过程演变机理的研究尚不充分,未来需进一步研究。
(4)碱激发主要通过降低再生微粉颗粒的整体聚合度、补充内在化学离子来增强再生微粉活性。未来可进一步研发高效环保的碱激发材料,提高环境效益,推进碱激发再生微粉的工程应用。
(5)目前所采用的再生微粉活化技术各有优缺点,未来可考虑针对不同的工程需求、经济要求、环保要求等,针对各活化技术进行合理改进或混合使用。

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方维炯,宣晓鑫,赵建明,.再生混凝土粉和再生砖粉活化技术研究进展[J].混凝土与水泥制品,2023(3):96-101

FANG W J,XUAN X X,ZHAO J M,et al.Research Progress on Activation Technology of Recycled Concrete Powder and Recycled Brick Powder[J].China Concrete and Cement Products,2023(3):96-101

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