Synthesis and characterization of drinking water treatment plant sludge-incorporated Portland cement |
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| Authors: | Mohammed Dahhou Mohammed El Moussaouiti Muhammad Azeem Arshad Souad Moustahsine Mohamed Assafi |
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| Institution: | 1.Laboratory of Materials, Nanotechnology and Environment, Department of Chemistry, Faculty of Sciences,University of Mohammed V Rabat,Rabat,Morocco;2.Laboratory of Composite Materials, Polymers and Environment, Department of Chemistry, Faculty of Sciences,University of Mohammed V,Rabat,Morocco;3.National Office of Electricity and Drinking Water, International Water and Sanitation Institute,Rabat,Morocco |
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| Abstract: | 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. |
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