Cargando…
Influence of Coarse Aggregates and Silica Fume on the Mechanical Properties, Durability, and Microstructure of Concrete
Globally, concrete is the most widely used construction material. The composition of concrete plays an important role in controlling its overall performance. Concrete is composed of approximately 70%–80% aggregates, by volume. Therefore, it is mandatory to investigate the effect of aggregates on the...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6829464/ https://www.ncbi.nlm.nih.gov/pubmed/31614748 http://dx.doi.org/10.3390/ma12203324 |
_version_ | 1783465562407436288 |
---|---|
author | Kim, Seong Soo Qudoos, Abdul Jakhrani, Sadam Hussain Lee, Jeong Bae Kim, Hong Gi |
author_facet | Kim, Seong Soo Qudoos, Abdul Jakhrani, Sadam Hussain Lee, Jeong Bae Kim, Hong Gi |
author_sort | Kim, Seong Soo |
collection | PubMed |
description | Globally, concrete is the most widely used construction material. The composition of concrete plays an important role in controlling its overall performance. Concrete is composed of approximately 70%–80% aggregates, by volume. Therefore, it is mandatory to investigate the effect of aggregates on the performance of concrete. For this purpose, this study investigated the effect of three different coarse aggregates on the mechanical properties, durability, and microstructure of concrete. Concrete specimens were made using aggregates obtained from three regions with different mineralogies. The specimens were also made by replacing cement with silica fume. The specimens were analyzed in terms of compressive, flexural, and splitting tensile strengths, chloride penetration, carbonation, mercury intrusion porosimetry, and scanning electron microscopy. The results demonstrate that the specimens made with rougher coarse aggregates and silica fume had enhanced performance in comparison to those made with smoother aggregates. |
format | Online Article Text |
id | pubmed-6829464 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-68294642019-11-18 Influence of Coarse Aggregates and Silica Fume on the Mechanical Properties, Durability, and Microstructure of Concrete Kim, Seong Soo Qudoos, Abdul Jakhrani, Sadam Hussain Lee, Jeong Bae Kim, Hong Gi Materials (Basel) Article Globally, concrete is the most widely used construction material. The composition of concrete plays an important role in controlling its overall performance. Concrete is composed of approximately 70%–80% aggregates, by volume. Therefore, it is mandatory to investigate the effect of aggregates on the performance of concrete. For this purpose, this study investigated the effect of three different coarse aggregates on the mechanical properties, durability, and microstructure of concrete. Concrete specimens were made using aggregates obtained from three regions with different mineralogies. The specimens were also made by replacing cement with silica fume. The specimens were analyzed in terms of compressive, flexural, and splitting tensile strengths, chloride penetration, carbonation, mercury intrusion porosimetry, and scanning electron microscopy. The results demonstrate that the specimens made with rougher coarse aggregates and silica fume had enhanced performance in comparison to those made with smoother aggregates. MDPI 2019-10-12 /pmc/articles/PMC6829464/ /pubmed/31614748 http://dx.doi.org/10.3390/ma12203324 Text en © 2019 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 Kim, Seong Soo Qudoos, Abdul Jakhrani, Sadam Hussain Lee, Jeong Bae Kim, Hong Gi Influence of Coarse Aggregates and Silica Fume on the Mechanical Properties, Durability, and Microstructure of Concrete |
title | Influence of Coarse Aggregates and Silica Fume on the Mechanical Properties, Durability, and Microstructure of Concrete |
title_full | Influence of Coarse Aggregates and Silica Fume on the Mechanical Properties, Durability, and Microstructure of Concrete |
title_fullStr | Influence of Coarse Aggregates and Silica Fume on the Mechanical Properties, Durability, and Microstructure of Concrete |
title_full_unstemmed | Influence of Coarse Aggregates and Silica Fume on the Mechanical Properties, Durability, and Microstructure of Concrete |
title_short | Influence of Coarse Aggregates and Silica Fume on the Mechanical Properties, Durability, and Microstructure of Concrete |
title_sort | influence of coarse aggregates and silica fume on the mechanical properties, durability, and microstructure of concrete |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6829464/ https://www.ncbi.nlm.nih.gov/pubmed/31614748 http://dx.doi.org/10.3390/ma12203324 |
work_keys_str_mv | AT kimseongsoo influenceofcoarseaggregatesandsilicafumeonthemechanicalpropertiesdurabilityandmicrostructureofconcrete AT qudoosabdul influenceofcoarseaggregatesandsilicafumeonthemechanicalpropertiesdurabilityandmicrostructureofconcrete AT jakhranisadamhussain influenceofcoarseaggregatesandsilicafumeonthemechanicalpropertiesdurabilityandmicrostructureofconcrete AT leejeongbae influenceofcoarseaggregatesandsilicafumeonthemechanicalpropertiesdurabilityandmicrostructureofconcrete AT kimhonggi influenceofcoarseaggregatesandsilicafumeonthemechanicalpropertiesdurabilityandmicrostructureofconcrete |