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

Autor:	Jacek Katzer, Andrzej Cwirzen, Tomasz Ponikiewski, Agnieszka Kocot
Rok vydání:	2021
Předmět:	Technology Materials science Curing (food preservation) Article law.invention Flexural strength law General Materials Science Composite material geopolymer Cement Microscopy QC120-168.85 Aggregate (composite) ground granulated blast furnace slag QH201-278.5 Slag Engineering (General). Civil engineering (General) TK1-9971 Geopolymer Portland cement PET Descriptive and experimental mechanics Ground granulated blast-furnace slag visual_art mortar visual_art.visual_art_medium waste management Electrical engineering. Electronics. Nuclear engineering TA1-2040
Zdroj:	Materials Materials, Vol 14, Iss 6274, p 6274 (2021) Volume 14 Issue 21
ISSN:	1996-1944
DOI:	10.3390/ma14216274
Popis:	The production of ordinary Portland cement is associated with significant CO2 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 CO2 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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5b1894deaac21c72384db4dc6157c428 https://doi.org/10.3390/ma14216274 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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