| Article ID: | iaor20122563 |
| Volume: | 28 |
| Issue: | 12 |
| Start Page Number: | 2495 |
| End Page Number: | 2502 |
| Publication Date: | Dec 2008 |
| Journal: | Waste Management |
| Authors: | Garcs P, Prez Carrin M, Garca-Alcocel E, Pay J, Monz J, Borrachero M V |
| Keywords: | water |
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.