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A Study on the Cement Gel Formation Process during the Creation of Nanomodified High-Performance Concrete Based on Nanosilica
One of the most science-intensive and developing areas is nano-modified concrete. Its characteristics of high-strength, high density, and improved structure, which is not only important at the stage of monitoring their performance, but also at the manufacturing stage, characterize high-performance c...
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/PMC9223191/ https://www.ncbi.nlm.nih.gov/pubmed/35735690 http://dx.doi.org/10.3390/gels8060346 |
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author | Beskopylny, Alexey N. Stel’makh, Sergey A. Shcherban’, Evgenii M. Mailyan, Levon R. Meskhi, Besarion Varavka, Valery Beskopylny, Nikita El’shaeva, Diana |
author_facet | Beskopylny, Alexey N. Stel’makh, Sergey A. Shcherban’, Evgenii M. Mailyan, Levon R. Meskhi, Besarion Varavka, Valery Beskopylny, Nikita El’shaeva, Diana |
author_sort | Beskopylny, Alexey N. |
collection | PubMed |
description | One of the most science-intensive and developing areas is nano-modified concrete. Its characteristics of high-strength, high density, and improved structure, which is not only important at the stage of monitoring their performance, but also at the manufacturing stage, characterize high-performance concrete. The aim of this study is to obtain new theoretical knowledge and experimental-applied dependencies arising from the “composition–microstructure–properties” ratio of high-strength concretes with a nano-modifying additive of the most effective type. The methods of laser granulometry and electron microscopy are applied. The existing concepts from the point of view of theory and practice about the processes of cement gel formation during the creation of nano-modified high-strength concretes with nano-modifying additives are developed. The most rational mode of the nano-modification of high-strength concretes is substantiated as follows: microsilica ground to nanosilica within 12 h. A complex nano-modifier containing nanosilica, superplasticizer, hyperplasticizer, and sodium sulfate was developed. The most effective combination of the four considered factors are: the content of nanosilica is 4% by weight of cement; the content of the superplasticizer additive is 1.4% by weight of cement; the content of the hyperplasticizer additive is 3% by weight of cement; and the water–cement ratio—0.33. The maximum difference of the strength characteristics in comparison with other combinations ranged from 45% to 57%. |
format | Online Article Text |
id | pubmed-9223191 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-92231912022-06-24 A Study on the Cement Gel Formation Process during the Creation of Nanomodified High-Performance Concrete Based on Nanosilica Beskopylny, Alexey N. Stel’makh, Sergey A. Shcherban’, Evgenii M. Mailyan, Levon R. Meskhi, Besarion Varavka, Valery Beskopylny, Nikita El’shaeva, Diana Gels Article One of the most science-intensive and developing areas is nano-modified concrete. Its characteristics of high-strength, high density, and improved structure, which is not only important at the stage of monitoring their performance, but also at the manufacturing stage, characterize high-performance concrete. The aim of this study is to obtain new theoretical knowledge and experimental-applied dependencies arising from the “composition–microstructure–properties” ratio of high-strength concretes with a nano-modifying additive of the most effective type. The methods of laser granulometry and electron microscopy are applied. The existing concepts from the point of view of theory and practice about the processes of cement gel formation during the creation of nano-modified high-strength concretes with nano-modifying additives are developed. The most rational mode of the nano-modification of high-strength concretes is substantiated as follows: microsilica ground to nanosilica within 12 h. A complex nano-modifier containing nanosilica, superplasticizer, hyperplasticizer, and sodium sulfate was developed. The most effective combination of the four considered factors are: the content of nanosilica is 4% by weight of cement; the content of the superplasticizer additive is 1.4% by weight of cement; the content of the hyperplasticizer additive is 3% by weight of cement; and the water–cement ratio—0.33. The maximum difference of the strength characteristics in comparison with other combinations ranged from 45% to 57%. MDPI 2022-06-02 /pmc/articles/PMC9223191/ /pubmed/35735690 http://dx.doi.org/10.3390/gels8060346 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 Beskopylny, Alexey N. Stel’makh, Sergey A. Shcherban’, Evgenii M. Mailyan, Levon R. Meskhi, Besarion Varavka, Valery Beskopylny, Nikita El’shaeva, Diana A Study on the Cement Gel Formation Process during the Creation of Nanomodified High-Performance Concrete Based on Nanosilica |
title | A Study on the Cement Gel Formation Process during the Creation of Nanomodified High-Performance Concrete Based on Nanosilica |
title_full | A Study on the Cement Gel Formation Process during the Creation of Nanomodified High-Performance Concrete Based on Nanosilica |
title_fullStr | A Study on the Cement Gel Formation Process during the Creation of Nanomodified High-Performance Concrete Based on Nanosilica |
title_full_unstemmed | A Study on the Cement Gel Formation Process during the Creation of Nanomodified High-Performance Concrete Based on Nanosilica |
title_short | A Study on the Cement Gel Formation Process during the Creation of Nanomodified High-Performance Concrete Based on Nanosilica |
title_sort | study on the cement gel formation process during the creation of nanomodified high-performance concrete based on nanosilica |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9223191/ https://www.ncbi.nlm.nih.gov/pubmed/35735690 http://dx.doi.org/10.3390/gels8060346 |
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