Activation & Application Research in Concrete of Neimenggu High Aluminum Coal Gangue

Hai Li Cheng; Fei Hua Yang; Jie Zhang

doi:10.4028/www.scientific.net/AMR.450-451.1400

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 450-451Activation & Application Research in Concrete of...

Activation & Application Research in Concrete of Neimenggu High Aluminum Coal Gangue

Abstract:

In this paper, the heat-activated conditions of Neimenggu high aluminum coal gangue were studied, and then, the activated coal gangue as a supplementary cementitious material was used in concrete to investigate the application effect. The result shows that the optimal calcining temperature of high aluminum coal gangue is 800°C, the setting time of concrete was postponed, the slump was reduced and the resistance of concrete to chloride ion penetration was improved for the use of activated coal gangue. The compressive strength of concrete was enhanced when cement was replaced by 20%～30% activated coal gangue powder. Pozzolanic effect of activated coal gangue in the early age (7d) is higher and it can promote the hydration of cement with each other.

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Periodical:

Advanced Materials Research (Volumes 450-451)

Pages:

1400-1404

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.450-451.1400

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Online since:

January 2012

Authors:

Hai Li Cheng, Fei Hua Yang, Jie Zhang

Keywords:

Application in Concrete, High Alumina Coal Gangue, Thermal Activation

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