Utilization of Waterworks Sludge in the Production of Fired/Unfired Water Permeable Bricks

Abstract:

Waterworks sludge was used as raw material to make fired water permeable bricks (WPB) and unfired water permeable bricks (WPB). Results show that when 30% ~ 40% sludge was added with 30% ~ 35% ordinary sands ranging from 1.0 to 1.4mm and some other materials, pressed at 30 MPa and then sintered at 1150°C for 1h, the compressive strength (CS)and permeability coefficient (PC) of produced fired WPB were 36.53MPa and 1.08×10-2 cm/s respectively. When the ratio of waterworks sludge increased from 20% to 35%, the CS of the unfired WPB decreased but stayed above 20 MPa, while the change of PC is insignificant.

• Periodical: Advanced Materials Research (Volume 531)
• Pages: 316-319
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.531.316
• Online since: June 2012
• Authors: Min Xie, Dan Gao, Xiao Bo Liu, Fang Li, Cong Huang
• Keywords: Compressive Strength, Permeability Coefficient, Water Permeable Brick, Waterworks Sludge

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