纳米材料增强骨料对再生砖骨料混凝土力学性能和微观结构的影响

IF 0.8 4区 材料科学 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Materials Science-medziagotyra Pub Date : 2023-02-22 DOI:10.5755/j02.ms.32715
Ting Wang, Qingshan Wang, Shenao Cui, Haihe Yi, Tian Su, Zhenyu Tan
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引用次数: 1

摘要

本文研究了纳米SiO2和纳米Al2O3对砖骨料性能、不同龄期砖骨料混凝土抗压强度和砖骨料混凝土微观结构的影响。结果表明,随着纳米材料溶液浓度的增加,再生砖集料的吸水率降低,再生砖骨料的压碎指数降低。纳米SiO2和纳米Al2O3提高了再生砖骨料混凝土不同龄期的抗压强度,纳米材料对混凝土早期强度的影响更为明显。随着纳米溶液浓度的增加,纳米SiO2增强砖骨料混凝土的抗压强度先增大后减小,而纳米Al2O3增强砖骨料的抗压强度增大。纳米材料增强砖骨料的内部结构更致密,微裂缝和孔隙中充满了水化产物,界面过渡区更紧密。
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Effects of Nanomaterials Reinforced Aggregate on Mechanical Properties and Microstructure of Recycled Brick Aggregate Concrete
In this paper, the effects of nano-SiO2 and nano-Al2O3 on the brick aggregate properties, compressive strength of brick aggregate concrete at different ages, and microstructure of brick aggregate concrete are investigated. The results show that the water absorption of recycled brick aggregate decreases with the increase of nanomaterials solution concentrations, and the crush index of recycled brick aggregate decreases. Nano-SiO2 and nano-Al2O3 improve the compressive strength of recycled brick aggregate concrete at different ages, and the effect of nanomaterials on the early strength of concrete are more obvious. With the increase of nano-solution concentration, the compressive strength of nano-SiO2 reinforced brick aggregate concrete increases first and then decreases, while that of nano-Al2O3 reinforced brick aggregate concrete increases. The internal structure of nanomaterials reinforced brick aggregate is denser, micro cracks and pores are filled with hydration products, and the interfacial transition zone is more compact.
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来源期刊
Materials Science-medziagotyra
Materials Science-medziagotyra 工程技术-材料科学:综合
CiteScore
1.70
自引率
10.00%
发文量
92
审稿时长
6-12 weeks
期刊介绍: It covers the fields of materials science concerning with the traditional engineering materials as well as advanced materials and technologies aiming at the implementation and industry applications. The variety of materials under consideration, contributes to the cooperation of scientists working in applied physics, chemistry, materials science and different fields of engineering.
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