Synthetic aggregate and landfill method

Details Synthetic aggregate and landfill method Synthetic aggregate and landfill method

C - Chemistry, Metallurgy

04

B

C04B 7/34 (2006.01) B09B 1/00 (2006.01) B09B 3/00 (2006.01) C04B 18/02 (2006.01) C04B 18/16 (2006.01) C04B 28/18 (2006.01)

Patent

CA 2111954

2111954 9222510 PCTABS00018 An abrasion resistant synthetic aggregate made from an intimately intermixed combination of lime, fly ash and sulfate/sulfite sludge (e.g. FDG sludge), mixed to the point where the mixture is nearly optimum density and thixotropic or compressible or non-compressible and plastic. This mixture is placed in a landfill. After a relatively brief cure period, the landfill is ripped and the material is crushed and graded. The aggregate, which in some instances may qualify as a lightweight aggregate, has a Los Angeles Abrasion Resistance of less than 60 %, and may in some cases be less than 50 % (medium particles passing) according to that test.

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