Influence of Calcination Temperature on Activity of Hydration Properties of Gangue

Jian Ping Zhu; Jian Wu Zhang; Song Hai Zhao; Dong Xu Li

doi:10.4028/www.scientific.net/AMR.415-417.1466

Paper Titles

Synthesis and Surface Properties of a Novel Switchable Bolaform Surfactant
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First-Principles Study on Mechanical Properties of IVB-Group Transition-Metal Nitrides TiN, ZrN, and HfN
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Characteristics and Applications of the AAm-Grafting PE
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Study on the Performance Influencing Factor of Epoxy Asphalt Waterproof Cohesive Layer in Steel Deck Pavement
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Influence of Calcination Temperature on Activity of Hydration Properties of Gangue
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Adhesion Mechanism Analysis of Prepainted Steel Sheet at UV Ageing Test
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Effect of Carbon Fiber Gradient Distribution on Heat Property of Electrically Conductive Cement Mortar
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Study of Ground Lateral Flow on Piles Foundation due to Soil Liquefaction
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Phase Field Model for Influence of Edge Dislocation on Precipitation
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Influence of Calcination Temperature on Activity of Hydration Properties of Gangue

Abstract:

The mineral structure and hydration activity changes of the Jiyuan gangue calcined at different temperatures were studied in the paper. Differential scanning calorimeter (DSC), X-ray diffraction (XRD) testing, strength testing of cement and Microhardness analysis methods were used to study the thermal activation of coal gangue mineral composition, and macroscopic characterization of the activity of heat-activated coal gangue. The results showed that after heat activation, the destruction of the gangue can be effective in the silicon-oxygen bond, aluminum-oxygen bond, forming amorphous material, and thereby enhanced the activity of coal gangue. Best thermal activation process conditions of Jiyuan gangue is calcined at 800°C for 2h. Adding 40% of the heat-activated coal gangue Activated at this condition to cement, the compressive strength than the same dosage as is the compressive strength of coal gangue increased 106%.