title: Mechanical and physical properties of cement blended with sewage sludge ash.
abstract: The aim of this paper is to evaluate the compatibility of sewage sludge ash (SSA) with various types of commercially available cements (CEM I and CEM II types, cements with several proportions of clinker). The behaviour of mortars fabricated with various percentages (10-30% by weight) of the cement replaced by SSA has been analyzed in terms of workability, mechanical strength, porosity and shrinkage/expansion. SSA exhibits moderate pozzolanic activity; the highest compressive strengths were obtained with 10% of the cement replaced by SSA. The CEM II/B-M (V-LL) 42.5R cement is considered ideal for preparing mortars containing SSA. Shrinkage data demonstrate that sulphates present in SSA are not reactive towards cement.
authors.affiliation: Departamento de Ingeniería de la Construcción, Universidad de Alicante, España, Spain.
authors.forename: P
authors.initials: P
authors.lastname: Garcés
authors.forename: M
authors.initials: M
authors.lastname: Pérez Carrión
authors.forename: E
authors.initials: E
authors.lastname: García-Alcocel
authors.forename: J
authors.initials: J
authors.lastname: Payá
authors.forename: J
authors.initials: J
authors.lastname: Monzó
authors.forename: M V
authors.initials: MV
authors.lastname: Borrachero
mesh_terms: D003247:Conservation of Natural Resources / Q000379:methods*; D003252:Construction Materials / Q000032:analysis*; D017745:Incineration; D019563:Mechanics; D008855:Microscopy, Electron, Scanning; D010316:Particle Size; D012722:Sewage / Q000737:chemistry*; D013997:Time Factors
chemical_list: D012722:Sewage