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Multitechnique investigation of concrete with coal gangue
Construction and Building Materials, 2021Abstract Although the research of coal gangue as construction aggregate has been conducted for many years, the fundamental knowledge about the links between the microscopic properties of coal gangue and the macroscopic properties of concrete has not been discovered yet.
Yifan Li, Songhui Liu, Xuemao Guan
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Valorization of calcined coal gangue as coarse aggregate in concrete
Cement and Concrete Composites, 2021 Coal gangue is a by-product generated from coal mining and washing. Using coal gangue as aggregate is an effective approach of valorization this high-volume industrial waste, not only solving the environmental issue of accumulation but also reducing the ...
Yuanyuan Zhu +2 more
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Recycling coal from coal gangue
Filtration + Separation, 2017Coal gangue is not just solid waste, but also has the potential to yield useful energy. In China, a mining group and a local power plant power plant joined forces with a local university to look at ways to recycle coal gangue to improve the revenue, cut down on resource utilization, and reduce environment pollution.
Liang Shen +4 more
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Coal and Coal Gangue Separation Based on Computer Vision
2010 Fifth International Conference on Frontier of Computer Science and Technology, 2010We consider the problem of automatically separating coal and coal gangue based on computer vision and design a coal and coal gangue separation system framework based on video. Grayscale histogram, fractal dimension and energy value are extracted as ore features.
Wenhui Li 0002 +3 more
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Influence of pozzolanic activity of coal gangue on hydration products in coal gangue-cement system
2010 International Conference on Mechanic Automation and Control Engineering, 2010Qualitative and quantitative analysis of the composition in the paste of complex cements have been determined by means of X-ray diffraction (XRD),differential scanning calorimetry (DSC) and directly-heating method. Results show that the composition of hydration products in coal gangue-cement complex system is similar to that in pure cement system, but ...
Bingwei Gu, Peiming Wang
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Progress of Coal Gangue Research
2011China is carrying out a large-scale energy bases in the early stages. Historical experience shows that a large number of coal gangue will be produce in the development of coal process. The coal gangue will occur environmental pollution when the improper disposal.
Jianguo Feng, GuiHua Li, Liping Zhang
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A Study on Release Law of Arsenic in Coal and Coal Gangue
Advanced Materials Research, 2013The release characteristics of arsenic in coal and coal gangue was discussed in this paper. At firsrt, Coal and coal gangue were sampled in the study area, determination of the arsenic content and sulfur content in the coal. Then the occurrence of the arsenic was analyzed in coal by chemical extraction experiment , the characteristics of mineral ...
Zhi Bin Liu, Hua Mei Su
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Identification and Activation of Coal Gangue and Performance of Limestone Calcined Gangue Cement
2020Gangue, a typical waste associated with the coal mining process in northern China, was characterized before and after thermal treatment by XRF, XRD, TGA-DSC, and SEM. The pozzolanic reactivity of calcined gangue with different calcined temperature was tested by standard mortar strength and R3 calorimetry test.
Bin Wang, Tongbo Sui, Hao Sui
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Preparation of Coal Gangue Cement Mortar
Advanced Materials Research, 2013Many researches on coal gangue are aimed at increasing its activity by many methods together such as thermal, mechanical and chemical. The methods are so complex that they are difficult to be adopted by some companies. In this paper, considering the low-strength requirement of cement mortar, the activity of coal gangue is more evidently shown by Ca(OH ...
Wen Xia Li +3 more
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Preparation and characterization of coal gangue geopolymers
Construction and Building Materials, 2018Abstract This paper explores the impacts of sodium hydroxide modulus, alkali lye amount and liquid–solid ratio on the strength and microstructure of coal gangue geopolymer materials, involving a total of five sodium hydroxide moduli, four NH/NS mass ratios and seven liquid–solid ratios.
Yi Cheng +6 more
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