Production of supplementary cementitious material as a sustainable management strategy for water treatment sludge waste
This paper investigates the application of Water Treatment Sludge (WTS), the main waste generated by water potabilization activities, for the development of a Supplementary Cementitious Material (SCM). The waste has been processed by calcining at a temperature range of 600 °C–800 °C for one hour. Ch...
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doaj-2b988f01785a4ca299864d62d2b0429d2020-11-25T03:51:00ZengElsevierCase Studies in Construction Materials2214-50952020-06-0112Production of supplementary cementitious material as a sustainable management strategy for water treatment sludge wasteLuis Gabriel Graupner de Godoy0Abrahão Bernardo Rohden1Mônica Regina Garcez2Silvana Da Dalt3Lucas Bonan Gomes4Federal University of Rio Grande Do Sul, Civil Engineering Post-Graduation Program: Construction and Infrastructure, Av. Osvaldo Aranha 99, Porto Alegre, RS, 90035-190, BrazilRegional University of Blumenau, Post-Graduation Program in Environmental Engineering, Blumenau, BrazilFederal University of Rio Grande Do Sul, Civil Engineering Post-Graduation Program: Construction and Infrastructure, Av. Osvaldo Aranha 99, Porto Alegre, RS, 90035-190, Brazil; Corresponding author.Federal University of Rio Grande Do Sul, Interdisciplinary Department, Tramandaí, BrazilFederal University of Rio Grande Do Sul, Laboratory of X-Ray Diffraction, Porto Alegre, BrazilThis paper investigates the application of Water Treatment Sludge (WTS), the main waste generated by water potabilization activities, for the development of a Supplementary Cementitious Material (SCM). The waste has been processed by calcining at a temperature range of 600 °C–800 °C for one hour. Chemical, mineralogical, physical, and morphological characterization has been performed to identify the potential pozzolanic activity of the calcined WTS and validate the application as SCM. Compressive strength tests have been performed in cement mortars with 14%, 35%, and 50% replacement of Portland cement by WTS. The WTS is a non-hazardous and non-inert waste, composed of SiO2, Al2O3, Fe2O3 and contains essentially quartz and kaolinite. Results confirmed the transformation of kaolinite into reactive amorphous phase by calcining. WTS calcined at 600 °C shows great potential to the production of SCM, confirmed by the chemical and physical analysis and the evidence of pozzolanic activity. The mechanical properties of mortars produced with 14% and 35% WTS calcined at 600 °C suggests a promising application in the production of blended and pozzolanic Portland cement.http://www.sciencedirect.com/science/article/pii/S2214509520300012Water treatment sludgeSupplementary cementitious materialCement mortar |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Luis Gabriel Graupner de Godoy Abrahão Bernardo Rohden Mônica Regina Garcez Silvana Da Dalt Lucas Bonan Gomes |
spellingShingle |
Luis Gabriel Graupner de Godoy Abrahão Bernardo Rohden Mônica Regina Garcez Silvana Da Dalt Lucas Bonan Gomes Production of supplementary cementitious material as a sustainable management strategy for water treatment sludge waste Case Studies in Construction Materials Water treatment sludge Supplementary cementitious material Cement mortar |
author_facet |
Luis Gabriel Graupner de Godoy Abrahão Bernardo Rohden Mônica Regina Garcez Silvana Da Dalt Lucas Bonan Gomes |
author_sort |
Luis Gabriel Graupner de Godoy |
title |
Production of supplementary cementitious material as a sustainable management strategy for water treatment sludge waste |
title_short |
Production of supplementary cementitious material as a sustainable management strategy for water treatment sludge waste |
title_full |
Production of supplementary cementitious material as a sustainable management strategy for water treatment sludge waste |
title_fullStr |
Production of supplementary cementitious material as a sustainable management strategy for water treatment sludge waste |
title_full_unstemmed |
Production of supplementary cementitious material as a sustainable management strategy for water treatment sludge waste |
title_sort |
production of supplementary cementitious material as a sustainable management strategy for water treatment sludge waste |
publisher |
Elsevier |
series |
Case Studies in Construction Materials |
issn |
2214-5095 |
publishDate |
2020-06-01 |
description |
This paper investigates the application of Water Treatment Sludge (WTS), the main waste generated by water potabilization activities, for the development of a Supplementary Cementitious Material (SCM). The waste has been processed by calcining at a temperature range of 600 °C–800 °C for one hour. Chemical, mineralogical, physical, and morphological characterization has been performed to identify the potential pozzolanic activity of the calcined WTS and validate the application as SCM. Compressive strength tests have been performed in cement mortars with 14%, 35%, and 50% replacement of Portland cement by WTS. The WTS is a non-hazardous and non-inert waste, composed of SiO2, Al2O3, Fe2O3 and contains essentially quartz and kaolinite. Results confirmed the transformation of kaolinite into reactive amorphous phase by calcining. WTS calcined at 600 °C shows great potential to the production of SCM, confirmed by the chemical and physical analysis and the evidence of pozzolanic activity. The mechanical properties of mortars produced with 14% and 35% WTS calcined at 600 °C suggests a promising application in the production of blended and pozzolanic Portland cement. |
topic |
Water treatment sludge Supplementary cementitious material Cement mortar |
url |
http://www.sciencedirect.com/science/article/pii/S2214509520300012 |
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