Cargando…

Influence of Polyethylene Terephthalate Powder on Hydration of Portland Cement

The management of plastic waste is a massive challenge and the recycling of plastics for newer applications is a potential solution. This study investigates the feasibility of using polyethylene terephthalate (PET) powder in cementitious composites. The changes in the strength and microstructure of...

Descripción completa

Detalles Bibliográficos
Autores principales: Kim, Min Ook, Park, Jun Kil, Han, Taek Hee, Seo, Joonho, Park, Solmoi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8347732/
https://www.ncbi.nlm.nih.gov/pubmed/34372153
http://dx.doi.org/10.3390/polym13152551
_version_ 1783735164213395456
author Kim, Min Ook
Park, Jun Kil
Han, Taek Hee
Seo, Joonho
Park, Solmoi
author_facet Kim, Min Ook
Park, Jun Kil
Han, Taek Hee
Seo, Joonho
Park, Solmoi
author_sort Kim, Min Ook
collection PubMed
description The management of plastic waste is a massive challenge and the recycling of plastics for newer applications is a potential solution. This study investigates the feasibility of using polyethylene terephthalate (PET) powder in cementitious composites. The changes in the strength and microstructure of Portland cement incorporating PET powder with different replacement ratios were systematically analyzed through the measurements of compressive strength, isothermal calorimetry, X-ray diffraction, thermogravimetric analysis, and Raman spectroscopy. In addition, the possible chemical changes of cement paste samples were studied upon exposure to different conditions, including deionized water, seawater, and simulated pore solution. Based on the test results and analysis, no apparent chemical changes were observed in the cement paste samples, regardless of the exposure conditions. In contrast, the PET powder incorporated into concrete exhibited remarkable changes, which may have occurred during the mixing process. The results also suggested that the maximum replacement ratio of PET powder should be less than 10% of the binder (by mass) to minimize its influence on cement hydration, due to the interaction between water and PET. The PET-containing samples showed the presence of calcium aluminate hydrates which were absent in the neat paste sample.
format Online
Article
Text
id pubmed-8347732
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-83477322021-08-08 Influence of Polyethylene Terephthalate Powder on Hydration of Portland Cement Kim, Min Ook Park, Jun Kil Han, Taek Hee Seo, Joonho Park, Solmoi Polymers (Basel) Article The management of plastic waste is a massive challenge and the recycling of plastics for newer applications is a potential solution. This study investigates the feasibility of using polyethylene terephthalate (PET) powder in cementitious composites. The changes in the strength and microstructure of Portland cement incorporating PET powder with different replacement ratios were systematically analyzed through the measurements of compressive strength, isothermal calorimetry, X-ray diffraction, thermogravimetric analysis, and Raman spectroscopy. In addition, the possible chemical changes of cement paste samples were studied upon exposure to different conditions, including deionized water, seawater, and simulated pore solution. Based on the test results and analysis, no apparent chemical changes were observed in the cement paste samples, regardless of the exposure conditions. In contrast, the PET powder incorporated into concrete exhibited remarkable changes, which may have occurred during the mixing process. The results also suggested that the maximum replacement ratio of PET powder should be less than 10% of the binder (by mass) to minimize its influence on cement hydration, due to the interaction between water and PET. The PET-containing samples showed the presence of calcium aluminate hydrates which were absent in the neat paste sample. MDPI 2021-07-31 /pmc/articles/PMC8347732/ /pubmed/34372153 http://dx.doi.org/10.3390/polym13152551 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kim, Min Ook
Park, Jun Kil
Han, Taek Hee
Seo, Joonho
Park, Solmoi
Influence of Polyethylene Terephthalate Powder on Hydration of Portland Cement
title Influence of Polyethylene Terephthalate Powder on Hydration of Portland Cement
title_full Influence of Polyethylene Terephthalate Powder on Hydration of Portland Cement
title_fullStr Influence of Polyethylene Terephthalate Powder on Hydration of Portland Cement
title_full_unstemmed Influence of Polyethylene Terephthalate Powder on Hydration of Portland Cement
title_short Influence of Polyethylene Terephthalate Powder on Hydration of Portland Cement
title_sort influence of polyethylene terephthalate powder on hydration of portland cement
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8347732/
https://www.ncbi.nlm.nih.gov/pubmed/34372153
http://dx.doi.org/10.3390/polym13152551
work_keys_str_mv AT kimminook influenceofpolyethyleneterephthalatepowderonhydrationofportlandcement
AT parkjunkil influenceofpolyethyleneterephthalatepowderonhydrationofportlandcement
AT hantaekhee influenceofpolyethyleneterephthalatepowderonhydrationofportlandcement
AT seojoonho influenceofpolyethyleneterephthalatepowderonhydrationofportlandcement
AT parksolmoi influenceofpolyethyleneterephthalatepowderonhydrationofportlandcement