Porosity Evolution of Cement Pastes Containing Sewage Sludge

In the presented paper the inuence of addition of galvanic sewage sludge derived from industrial waste water on porosity of c ement pastes were investigated. The pastes were made basing on common cements and binders containing Portland cement mixed with � y ash from the � uidized bed coal combustion of fuels. Porosity evolution of cement pastes containing sewage sludge additives and pastes without any additives was determined after 28, 90 and 180 days of hydration.