Strength Characteristics of Alkali-Activated Slag Mortars with the Addition of PET Flakes

The production of ordinary Portland cement is associated with significant CO<sub>2</sub> emissions. To limit these emissions, new binders are needed that can be efficiently substituted for cement. Alkali-activated slag composites are one such possible binder solution. The research progra...

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Autores principales:	Agnieszka Kocot, Andrzej Ćwirzeń, Tomasz Ponikiewski, Jacek Katzer
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	ground granulated blast furnace slag PET mortar geopolymer waste management Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/52b7e9b0c89e4024b8efc86b78d02cc1
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spelling	oai:doaj.org-article:52b7e9b0c89e4024b8efc86b78d02cc12021-11-11T17:51:01ZStrength Characteristics of Alkali-Activated Slag Mortars with the Addition of PET Flakes10.3390/ma142162741996-1944https://doaj.org/article/52b7e9b0c89e4024b8efc86b78d02cc12021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6274https://doaj.org/toc/1996-1944The production of ordinary Portland cement is associated with significant CO<sub>2</sub> emissions. To limit these emissions, new binders are needed that can be efficiently substituted for cement. Alkali-activated slag composites are one such possible binder solution. The research programme presented herein focused on the creation of alkali-activated slag composites with the addition of PET flakes as a partial substitute (5%) for natural aggregate. Such composites have a significantly lower impact in terms of CO<sub>2</sub> emissions in comparison to ordinary concrete. The created composites were differentiated by the amount of activator (10 and 20 wt.%) and curing temperature (from 20 to 80 °C). Their mechanical properties were tested, and a scanning electron microscope analysis was conducted. Compressive and flexural strengths ranging from 29.3 to 68.4 MPa and from 3.5 to 6.1 MPa, respectively, were achieved. The mechanical test results confirmed that a higher amount of activator improved the mechanical properties. However, the influence of the PET particles on the mechanical properties and microstructure varied with the curing temperature and amount of activator. Areas that require further research were identified.Agnieszka KocotAndrzej ĆwirzeńTomasz PonikiewskiJacek KatzerMDPI AGarticleground granulated blast furnace slagPETmortargeopolymerwaste managementTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6274, p 6274 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	ground granulated blast furnace slag PET mortar geopolymer waste management Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	ground granulated blast furnace slag PET mortar geopolymer waste management Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Agnieszka Kocot Andrzej Ćwirzeń Tomasz Ponikiewski Jacek Katzer Strength Characteristics of Alkali-Activated Slag Mortars with the Addition of PET Flakes
description	The production of ordinary Portland cement is associated with significant CO<sub>2</sub> emissions. To limit these emissions, new binders are needed that can be efficiently substituted for cement. Alkali-activated slag composites are one such possible binder solution. The research programme presented herein focused on the creation of alkali-activated slag composites with the addition of PET flakes as a partial substitute (5%) for natural aggregate. Such composites have a significantly lower impact in terms of CO<sub>2</sub> emissions in comparison to ordinary concrete. The created composites were differentiated by the amount of activator (10 and 20 wt.%) and curing temperature (from 20 to 80 °C). Their mechanical properties were tested, and a scanning electron microscope analysis was conducted. Compressive and flexural strengths ranging from 29.3 to 68.4 MPa and from 3.5 to 6.1 MPa, respectively, were achieved. The mechanical test results confirmed that a higher amount of activator improved the mechanical properties. However, the influence of the PET particles on the mechanical properties and microstructure varied with the curing temperature and amount of activator. Areas that require further research were identified.
format	article
author	Agnieszka Kocot Andrzej Ćwirzeń Tomasz Ponikiewski Jacek Katzer
author_facet	Agnieszka Kocot Andrzej Ćwirzeń Tomasz Ponikiewski Jacek Katzer
author_sort	Agnieszka Kocot
title	Strength Characteristics of Alkali-Activated Slag Mortars with the Addition of PET Flakes
title_short	Strength Characteristics of Alkali-Activated Slag Mortars with the Addition of PET Flakes
title_full	Strength Characteristics of Alkali-Activated Slag Mortars with the Addition of PET Flakes
title_fullStr	Strength Characteristics of Alkali-Activated Slag Mortars with the Addition of PET Flakes
title_full_unstemmed	Strength Characteristics of Alkali-Activated Slag Mortars with the Addition of PET Flakes
title_sort	strength characteristics of alkali-activated slag mortars with the addition of pet flakes
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/52b7e9b0c89e4024b8efc86b78d02cc1
work_keys_str_mv	AT agnieszkakocot strengthcharacteristicsofalkaliactivatedslagmortarswiththeadditionofpetflakes AT andrzejcwirzen strengthcharacteristicsofalkaliactivatedslagmortarswiththeadditionofpetflakes AT tomaszponikiewski strengthcharacteristicsofalkaliactivatedslagmortarswiththeadditionofpetflakes AT jacekkatzer strengthcharacteristicsofalkaliactivatedslagmortarswiththeadditionofpetflakes
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Strength Characteristics of Alkali-Activated Slag Mortars with the Addition of PET Flakes

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