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Study of the Course of Cement Hydration in the Presence of Waste Metal Particles and Pozzolanic Additives
As the construction of hydrotechnical and energy facilities grows worldwide, so does the need for special heavyweight concrete. This study presents the analysis of the influence of waste-metal particle filler (WMP) on Portland cement (PC) paste and mortars with pozzolanic (microsilica and metakaolin...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9030450/ https://www.ncbi.nlm.nih.gov/pubmed/35454618 http://dx.doi.org/10.3390/ma15082925 |
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author | Pundienė, Ina Pranckevičienė, Jolanta Kligys, Modestas Girskas, Giedrius |
author_facet | Pundienė, Ina Pranckevičienė, Jolanta Kligys, Modestas Girskas, Giedrius |
author_sort | Pundienė, Ina |
collection | PubMed |
description | As the construction of hydrotechnical and energy facilities grows worldwide, so does the need for special heavyweight concrete. This study presents the analysis of the influence of waste-metal particle filler (WMP) on Portland cement (PC) paste and mortars with pozzolanic (microsilica and metakaolin) additives in terms of the hydration process, structure development, and physical–mechanical properties during 28 days of hardening. Results have shown that waste-metal particle fillers prolong the course of PC hydration. The addition of pozzolanic additives by 37% increased the total heat value and the ultrasound propagation velocity (UPV) in WMP-containing paste by 16%; however, in the paste with only WMP, the UPV is 4% lower than in the WMP-free paste. The density of waste-metal particle fillers in the free mortar was about two times lower than waste-metal particle fillers containing mortar. Due to the lower water absorption, the compressive strength of WMP-free mortar after 28 days of hardening achieved 42.1 MPa, which is about 14% higher than in mortar with waste-metal particle filler. The addition of pozzolanic additives decreased water absorption and increased the compressive strength of waste-metal particle filler containing mortar by 22%, compared to pozzolanic additive-free waste-metal particle fillers containing mortar. The pozzolanic additives facilitated a less porous matrix and improved the contact zone between the cement matrix and waste-metal particle fillers. The results of the study showed that pozzolanic additives can solve difficulties in local waste-metal particle fillers application in heavyweight concrete. The successful development of heavyweight concrete with waste-metal particle fillers and pozzolanic additives can significantly expand the possibility of creating special concrete using different local waste. The heavyweight concrete developed by using waste-metal particle fillers is suitable for being used in load balancing and in hydrotechnical foundations. |
format | Online Article Text |
id | pubmed-9030450 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-90304502022-04-23 Study of the Course of Cement Hydration in the Presence of Waste Metal Particles and Pozzolanic Additives Pundienė, Ina Pranckevičienė, Jolanta Kligys, Modestas Girskas, Giedrius Materials (Basel) Article As the construction of hydrotechnical and energy facilities grows worldwide, so does the need for special heavyweight concrete. This study presents the analysis of the influence of waste-metal particle filler (WMP) on Portland cement (PC) paste and mortars with pozzolanic (microsilica and metakaolin) additives in terms of the hydration process, structure development, and physical–mechanical properties during 28 days of hardening. Results have shown that waste-metal particle fillers prolong the course of PC hydration. The addition of pozzolanic additives by 37% increased the total heat value and the ultrasound propagation velocity (UPV) in WMP-containing paste by 16%; however, in the paste with only WMP, the UPV is 4% lower than in the WMP-free paste. The density of waste-metal particle fillers in the free mortar was about two times lower than waste-metal particle fillers containing mortar. Due to the lower water absorption, the compressive strength of WMP-free mortar after 28 days of hardening achieved 42.1 MPa, which is about 14% higher than in mortar with waste-metal particle filler. The addition of pozzolanic additives decreased water absorption and increased the compressive strength of waste-metal particle filler containing mortar by 22%, compared to pozzolanic additive-free waste-metal particle fillers containing mortar. The pozzolanic additives facilitated a less porous matrix and improved the contact zone between the cement matrix and waste-metal particle fillers. The results of the study showed that pozzolanic additives can solve difficulties in local waste-metal particle fillers application in heavyweight concrete. The successful development of heavyweight concrete with waste-metal particle fillers and pozzolanic additives can significantly expand the possibility of creating special concrete using different local waste. The heavyweight concrete developed by using waste-metal particle fillers is suitable for being used in load balancing and in hydrotechnical foundations. MDPI 2022-04-17 /pmc/articles/PMC9030450/ /pubmed/35454618 http://dx.doi.org/10.3390/ma15082925 Text en © 2022 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 Pundienė, Ina Pranckevičienė, Jolanta Kligys, Modestas Girskas, Giedrius Study of the Course of Cement Hydration in the Presence of Waste Metal Particles and Pozzolanic Additives |
title | Study of the Course of Cement Hydration in the Presence of Waste Metal Particles and Pozzolanic Additives |
title_full | Study of the Course of Cement Hydration in the Presence of Waste Metal Particles and Pozzolanic Additives |
title_fullStr | Study of the Course of Cement Hydration in the Presence of Waste Metal Particles and Pozzolanic Additives |
title_full_unstemmed | Study of the Course of Cement Hydration in the Presence of Waste Metal Particles and Pozzolanic Additives |
title_short | Study of the Course of Cement Hydration in the Presence of Waste Metal Particles and Pozzolanic Additives |
title_sort | study of the course of cement hydration in the presence of waste metal particles and pozzolanic additives |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9030450/ https://www.ncbi.nlm.nih.gov/pubmed/35454618 http://dx.doi.org/10.3390/ma15082925 |
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