Synthesis and characterization of drinking water treatment plant sludge-incorporated Portland cement
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Kinetic analysis of thermally activated phase transformations in drinking water treatment plant (DWTP) sludge suggests its applicability in the materials of construction. The suggested prediction has already been verified on the sludge-based bricks. The present study deals with incorporating the same sludge in the raw meal for the synthesis of Portland cement clinkers. For this purpose, two raw meals are prepared with varying sludge loadings. The sludge effect on reactivity of the crude mixture is evaluated on the basis of the free lime content sintered at various elevated temperatures. The results of chemical and mineralogical and scanning electron microscopic analyses reveal fine mineralogical contents of Portland clinkers calcined at 1450 and 1500 °C. Moreover, the cements prepared from these clinkers by the introduction of certain proportions of gypsum, depict significant durability. The obtained results elucidate that the studied DWTP sludge-incorporated Portland cement shows considerable potential to be commercialized.
KeywordsDWTP sludge Clinker Cement Characterization Valorization
The authors acknowledge support from “National Office of electricity and drinking water” (ONEE) for supplying drinking water sludge.
- 15.Ramadan MO, Fouad HA, Hassanain AM (2008) Reuse of water treatment plant sludge in brick manufacturing. J Appl Sci Res 4(10):1223–1229Google Scholar
- 18.Rodríguez NH, Martínez-Ramírez S, Blanco-Varela MT et al (2010) Re-use of drinking water treatment plant (DWTP) sludge: characterization and technological behaviour of cement mortars with atomized sludge additions. Cement Concr Res 40(5):778–786. doi: 10.1016/j.cemconres.2009.11.012 CrossRefGoogle Scholar
- 21.EN 196-1:2005 (E) (2005) Methods of testing cement (part 1): determination of strength [S]. British Standards Institute/The European Committee for Standardisation, ChiswickGoogle Scholar
- 23.Ghosh SN (1983) Advances in cement technology: critical reviews and case studies on manufacturing, quality control, optimization and use. Pergamon Press, OxfordGoogle Scholar
- 31.Hewlett PC (1998) Lea’s chemistry of cement and concrete, 4th edn. Elsevier Butterworth-Heinemann, OxfordGoogle Scholar
- 37.Tsurumi T, Hirano Y, Kato H et al (1994) Crystal structure and hydration of belite. Ceram Trans 40:19–25Google Scholar
- 42.AENOR EN 197–1 (2000) Cement composition, specifications and conformity criteria for common cements. European StandardGoogle Scholar