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Effectiveness of Polymer Additives in Concrete for 3D Concrete Printing Using Fly Ash

The article shows the effectiveness of the use of polymer additives for the production of fine-grained concrete mixtures and concretes based on using coal fly ash, which can be used as working mixtures for a 3D printer. Using mathematical planning of experiments, a set of experimental–statistical mo...

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Autores principales: Dvorkin, Leonid, Konkol, Janusz, Marchuk, Vitaliy, Huts, Andriy
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9785001/
https://www.ncbi.nlm.nih.gov/pubmed/36559834
http://dx.doi.org/10.3390/polym14245467
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author Dvorkin, Leonid
Konkol, Janusz
Marchuk, Vitaliy
Huts, Andriy
author_facet Dvorkin, Leonid
Konkol, Janusz
Marchuk, Vitaliy
Huts, Andriy
author_sort Dvorkin, Leonid
collection PubMed
description The article shows the effectiveness of the use of polymer additives for the production of fine-grained concrete mixtures and concretes based on using coal fly ash, which can be used as working mixtures for a 3D printer. Using mathematical planning of experiments, a set of experimental–statistical models was obtained that describes the influence of mixture composition factors including copolymer additive on the most important properties of ash-containing concrete mixtures and concretes for 3D concrete printing in the presence of a hardening accelerator additive. It is shown that when the dry mixture is mixed in water, the redispersed polymer powders are converted into an adhesive polymer dispersion, which, when the solution cures, creates “rubber bridges” in its pores and at the border with the base. They have high tensile strength and elastically reinforce the cement stone; in addition, they are also capable of not only significantly increasing the adhesion between the layers of the extruded mixture, but also significantly smoothing out such shortcomings of the cement stone as increased brittleness, low ultimate elongation, and a tendency to cracking.
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spelling pubmed-97850012022-12-24 Effectiveness of Polymer Additives in Concrete for 3D Concrete Printing Using Fly Ash Dvorkin, Leonid Konkol, Janusz Marchuk, Vitaliy Huts, Andriy Polymers (Basel) Article The article shows the effectiveness of the use of polymer additives for the production of fine-grained concrete mixtures and concretes based on using coal fly ash, which can be used as working mixtures for a 3D printer. Using mathematical planning of experiments, a set of experimental–statistical models was obtained that describes the influence of mixture composition factors including copolymer additive on the most important properties of ash-containing concrete mixtures and concretes for 3D concrete printing in the presence of a hardening accelerator additive. It is shown that when the dry mixture is mixed in water, the redispersed polymer powders are converted into an adhesive polymer dispersion, which, when the solution cures, creates “rubber bridges” in its pores and at the border with the base. They have high tensile strength and elastically reinforce the cement stone; in addition, they are also capable of not only significantly increasing the adhesion between the layers of the extruded mixture, but also significantly smoothing out such shortcomings of the cement stone as increased brittleness, low ultimate elongation, and a tendency to cracking. MDPI 2022-12-13 /pmc/articles/PMC9785001/ /pubmed/36559834 http://dx.doi.org/10.3390/polym14245467 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
Dvorkin, Leonid
Konkol, Janusz
Marchuk, Vitaliy
Huts, Andriy
Effectiveness of Polymer Additives in Concrete for 3D Concrete Printing Using Fly Ash
title Effectiveness of Polymer Additives in Concrete for 3D Concrete Printing Using Fly Ash
title_full Effectiveness of Polymer Additives in Concrete for 3D Concrete Printing Using Fly Ash
title_fullStr Effectiveness of Polymer Additives in Concrete for 3D Concrete Printing Using Fly Ash
title_full_unstemmed Effectiveness of Polymer Additives in Concrete for 3D Concrete Printing Using Fly Ash
title_short Effectiveness of Polymer Additives in Concrete for 3D Concrete Printing Using Fly Ash
title_sort effectiveness of polymer additives in concrete for 3d concrete printing using fly ash
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9785001/
https://www.ncbi.nlm.nih.gov/pubmed/36559834
http://dx.doi.org/10.3390/polym14245467
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