Effect of Bentonite on Properties of Fly Ash-Based Porous Ceramics

Abstract:

Recycling fly ash in a way with high benifits is important to environmental conservation and sustainable development. Using bentonite as binder and coal powder as pore-forming agent, the fly ash-based porous ceramics was prepared and effects of bentonite on performances of the ceramics were researched. With the increasing of bentonite content from 3.0mass% to 5.0mass%, liquid phase sintering process was promoted and the bending strength improved from 5.46 to 6.09Mpa. Contrarily, the open porosity decreased from 48.18% to 44.39%. But more bentonite addition would result in some larger pores distributed inhomogeneously in the microstructure so that the bend strength fell down and porosity went up.

• Periodical: Advanced Materials Research (Volume 412)
• Pages: 195-198
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.412.195
• Online since: November 2011
• Authors: Xiao Rong Liu, Lin Xiong, Ai Ying Chen
• Keywords: Bending Strength, Bentonite, Fly Ash (FA), Pore-Forming Agent, Porosity, Porous Ceramics

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