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Influence of The Segregation Phenomenon on Structural Efficiency of Lightweight Aggregate Concretes
Lightweight aggregate concretes (LWAC) are versatile and interesting materials for projects that require greater structural efficiency. Due to the difference that exists between the densities of the materials used in these types of concrete, during transport and mainly compaction, their aggregates t...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7766865/ https://www.ncbi.nlm.nih.gov/pubmed/33339408 http://dx.doi.org/10.3390/ma13245754 |
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author | Solak, Afonso Miguel Tenza-Abril, Antonio José García-Vera, Victoria Eugenia |
author_facet | Solak, Afonso Miguel Tenza-Abril, Antonio José García-Vera, Victoria Eugenia |
author_sort | Solak, Afonso Miguel |
collection | PubMed |
description | Lightweight aggregate concretes (LWAC) are versatile and interesting materials for projects that require greater structural efficiency. Due to the difference that exists between the densities of the materials used in these types of concrete, during transport and mainly compaction, their aggregates tend to separate from the mortar matrix, floating towards the surface, a phenomenon called segregation. Segregation in LWAC can affect its durability properties, its density, and directly affect its structural efficiency. In this work, different concrete densities (1700 kg/m(3) and 1900 kg/m(3)) manufactured with different dosages (two different lightweight aggregates) and compaction methods (one or two layers) were analyzed to verify the impact of segregation on its structural efficiency. For this purpose, the segregation index of the LWAC was obtained by means of the image analysis technique. In addition, to obtain their structural efficiency, the density and compressive strength were obtained at different heights of the tested specimens. The results show the vibration of the samples in two layers leads to a more efficient elimination of trapped air, a reduction in the risk of segregation, and better structural efficiency. |
format | Online Article Text |
id | pubmed-7766865 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-77668652020-12-28 Influence of The Segregation Phenomenon on Structural Efficiency of Lightweight Aggregate Concretes Solak, Afonso Miguel Tenza-Abril, Antonio José García-Vera, Victoria Eugenia Materials (Basel) Article Lightweight aggregate concretes (LWAC) are versatile and interesting materials for projects that require greater structural efficiency. Due to the difference that exists between the densities of the materials used in these types of concrete, during transport and mainly compaction, their aggregates tend to separate from the mortar matrix, floating towards the surface, a phenomenon called segregation. Segregation in LWAC can affect its durability properties, its density, and directly affect its structural efficiency. In this work, different concrete densities (1700 kg/m(3) and 1900 kg/m(3)) manufactured with different dosages (two different lightweight aggregates) and compaction methods (one or two layers) were analyzed to verify the impact of segregation on its structural efficiency. For this purpose, the segregation index of the LWAC was obtained by means of the image analysis technique. In addition, to obtain their structural efficiency, the density and compressive strength were obtained at different heights of the tested specimens. The results show the vibration of the samples in two layers leads to a more efficient elimination of trapped air, a reduction in the risk of segregation, and better structural efficiency. MDPI 2020-12-16 /pmc/articles/PMC7766865/ /pubmed/33339408 http://dx.doi.org/10.3390/ma13245754 Text en © 2020 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Solak, Afonso Miguel Tenza-Abril, Antonio José García-Vera, Victoria Eugenia Influence of The Segregation Phenomenon on Structural Efficiency of Lightweight Aggregate Concretes |
title | Influence of The Segregation Phenomenon on Structural Efficiency of Lightweight Aggregate Concretes |
title_full | Influence of The Segregation Phenomenon on Structural Efficiency of Lightweight Aggregate Concretes |
title_fullStr | Influence of The Segregation Phenomenon on Structural Efficiency of Lightweight Aggregate Concretes |
title_full_unstemmed | Influence of The Segregation Phenomenon on Structural Efficiency of Lightweight Aggregate Concretes |
title_short | Influence of The Segregation Phenomenon on Structural Efficiency of Lightweight Aggregate Concretes |
title_sort | influence of the segregation phenomenon on structural efficiency of lightweight aggregate concretes |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7766865/ https://www.ncbi.nlm.nih.gov/pubmed/33339408 http://dx.doi.org/10.3390/ma13245754 |
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