The production of sewage sludge (SS) from waste water treatment plant is . In this investigation, sewage sludge ash has been used as partial cement.
Heat treatment of processing sludge of ornamental rocks: application as pozzolan in cement matrices. J.G. Uliana. J. L. Calmon. G. L. Vieira. J. E. S. L. Teixeira.
Reuse of textile effluent treatment plant sludge in building materials. . for structural and non-structural application by partial replacement of up to 30% of cement.