Effects of Heating Rate on the Physical Property, Porosity and Expansibility of Sewage Sludge Ceramics (SSC)

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The effects of heating rate on the preparation, characterization, pore-forming mechanism and bloating mechanism of sludge ceramics were investigated. The experimental results indicated that physical properties of SSC were highly dependent on heating rate. SSC with higher expansion rate and lower water absorption could be obtained as the heating rate was between 4 °C/min and 5 °C/min. Porosity and expansibility of SSC were closely related to the heating rate. The heating rate could affect the relationship between the forming rate of gas and the forming rate of glass phase, and further influenced the bloating phenomenon of SSC.

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383-387

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September 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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