Reviews of Research on Mechanical Properties and Durability of Coal Gangue Coarse Aggregate Concrete
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摘要: 煤矸石是我国排放量最大的固体废渣之一,将煤矸石作为粗骨料应用在混凝土中,符合绿色环保节能减排的理念,并受到建筑行业和研究人员的广泛关注。通过对煤矸石粗骨料混凝土研究进展的总结,介绍了我国不同地区煤矸石的化学组成和物理性质,总结了煤矸石粗骨料掺量对混凝土的塌落度、力学性能、耐久性能、微观结构的影响,并通过现有煤矸石粗骨料混凝土研究成果的分析,对煤矸石粗骨料混凝土未来的研究方向作出展望。Abstract: Coal gangue is one of the solid wastes with the largest emission in China. The application of coal gangue as a coarse aggregate in concrete conforms to the concept of green environmental protection, energy saving and emission reduction, and has received extensive attention from the construction industry and researchers. On the basis of sammarizing research progress of coal gangue coarse aggregate concrete, the chemical composition and physical properties of coal gangue in different zones of China were introduced, and the influence of the coal gangue coarse aggregate content on the slump, mechanical properties, durability and microstructure of concrete were summarized.Through the analysis of the existing research results of coal gangue coarse aggregate concrete, the future research directions of coal gangue coarse aggregate concrete were prospected.
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Key words:
- coal gangue coarse aggregate /
- concrete /
- mechanical property /
- durability /
- micro structure
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