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Experimental Study on Production of Common Sintered Bricks Containing High Volume of Waterworks Sludge

The production of common sintered brick by using waterworks sludge and fly ash as major raw materials with the addition of feldspar powder and quartz sand is studied. The apparent natures, compressive strength, water absorption and other performance tests of the bricks are investigated. The results indicate that 60%-70% of waterworks sludge can be used to produce common sintered bricks. The water absorption is about 20% and the compressive strength is higher than 20MPa, which meet the National Standards(GB/T5101-2003).