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回收粉尘对碱激发混凝土材料的性能影响研究

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为促进沥青拌和站回收粉尘的资源化利用,本文对沥青回收粉尘用于碱激发混凝土替代部分矿渣粉、偏高岭土等被激发胶凝材料进行了研究,以力学性能为指标确定了回收粉尘用于碱激发混凝土时的最佳掺量,并对不同碱激发剂掺量、激发剂模数对碱激发混凝土性能的影响进行了分析。结果表明,回收粉尘的微集料效应对碱激发混凝土的性能具有一定影响,当回收粉尘掺量过高时会对C-S-H、C-A-S-H造成影响,导致混凝土性能降低。
Study on the Effect of Recycled Dust on the Performance of Alkali Activated Concrete Materials
In order to promote the resource utilization of recovered dust in asphalt mixing station,this paper studied the application of asphalt recovered powder in alkali excited concrete to replace some excited cementing materials such as slag powder and metakaolin.The optimum dosage of recovered powder for alkali-excited concrete was determined with mechanical properties as the index,and the influence of different dosage of alkali activator and the modulus of activator on the performance of alkali-excited concrete was studied.The results show that the micro-aggregate effect of recovered powder has a certain effect on the performance of alkali-excited concrete,and when the content of recovered powder is too high,it will affect the C-S-H,C-A-S-H,and lead to the performance reduction.

road engineeringalkali activated concreterecycling dustmechanical propertiesdurability

刘芝敏、田霞、李如静

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济南金曰公路工程有限公司,山东 济南 250000

道路工程 碱激发混凝土 回收粉尘 力学性能 耐久性能

2024

交通节能与环保
人民交通出版社股份有限公司,交通运输部公路科学研究院

交通节能与环保

影响因子:0.286
ISSN:1673-6478
年,卷(期):2024.20(4)