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Compaction Curves and Strength of Clayey Soil Modified with Micro and Nano Silica

Some Clayey soils are generally categorized as weak soils, and structures lying on such soils have been exposed to severe damage. Therefore, the central thesis of this paper is the impact of a waste material known as a silica fume as nano and micro material on soil’s behaviour. To evaluate the effec...

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Autores principales: Alshami, Abeer W., Ismael, Bashar H., Aswad, Mohammed F., Majdi, Ali, Alshijlawi, Murtatha, Aljumaily, Mustafa Mohammed, AlOmar, Mohamed Khalid, Aidan, Ibraheem A., Hameed, Mohammed Majeed
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9609462/
https://www.ncbi.nlm.nih.gov/pubmed/36295217
http://dx.doi.org/10.3390/ma15207148
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author Alshami, Abeer W.
Ismael, Bashar H.
Aswad, Mohammed F.
Majdi, Ali
Alshijlawi, Murtatha
Aljumaily, Mustafa Mohammed
AlOmar, Mohamed Khalid
Aidan, Ibraheem A.
Hameed, Mohammed Majeed
author_facet Alshami, Abeer W.
Ismael, Bashar H.
Aswad, Mohammed F.
Majdi, Ali
Alshijlawi, Murtatha
Aljumaily, Mustafa Mohammed
AlOmar, Mohamed Khalid
Aidan, Ibraheem A.
Hameed, Mohammed Majeed
author_sort Alshami, Abeer W.
collection PubMed
description Some Clayey soils are generally categorized as weak soils, and structures lying on such soils have been exposed to severe damage. Therefore, the central thesis of this paper is the impact of a waste material known as a silica fume as nano and micro material on soil’s behaviour. To evaluate the effects of those additives on Atterberg limits, compaction characteristics and unconfined compressive strength, clayey soil samples have been transformed using micro and nano silica fume (by-product materials). In the current investigation, silica fume is used at four different percentages: 0, 2, 4, and 7%. The results show that the plasticity index of soil decreases with the addition of micro silica and increases with the addition of nano-silica. Increasing nano silica percentage improves the dry density of the compacted soil and reduces the optimum moisture content. An opposite behavior is observed with adding micro silica to compacted soil. Finally, 4% of silica fume is found to be the optimum dosage to improve the unconfined compressive strength of the treated soil with both additives. As a result, treating the weak clay soil with micro and/or nano-silica fume has the potential to be impactful.
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spelling pubmed-96094622022-10-28 Compaction Curves and Strength of Clayey Soil Modified with Micro and Nano Silica Alshami, Abeer W. Ismael, Bashar H. Aswad, Mohammed F. Majdi, Ali Alshijlawi, Murtatha Aljumaily, Mustafa Mohammed AlOmar, Mohamed Khalid Aidan, Ibraheem A. Hameed, Mohammed Majeed Materials (Basel) Article Some Clayey soils are generally categorized as weak soils, and structures lying on such soils have been exposed to severe damage. Therefore, the central thesis of this paper is the impact of a waste material known as a silica fume as nano and micro material on soil’s behaviour. To evaluate the effects of those additives on Atterberg limits, compaction characteristics and unconfined compressive strength, clayey soil samples have been transformed using micro and nano silica fume (by-product materials). In the current investigation, silica fume is used at four different percentages: 0, 2, 4, and 7%. The results show that the plasticity index of soil decreases with the addition of micro silica and increases with the addition of nano-silica. Increasing nano silica percentage improves the dry density of the compacted soil and reduces the optimum moisture content. An opposite behavior is observed with adding micro silica to compacted soil. Finally, 4% of silica fume is found to be the optimum dosage to improve the unconfined compressive strength of the treated soil with both additives. As a result, treating the weak clay soil with micro and/or nano-silica fume has the potential to be impactful. MDPI 2022-10-14 /pmc/articles/PMC9609462/ /pubmed/36295217 http://dx.doi.org/10.3390/ma15207148 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
Alshami, Abeer W.
Ismael, Bashar H.
Aswad, Mohammed F.
Majdi, Ali
Alshijlawi, Murtatha
Aljumaily, Mustafa Mohammed
AlOmar, Mohamed Khalid
Aidan, Ibraheem A.
Hameed, Mohammed Majeed
Compaction Curves and Strength of Clayey Soil Modified with Micro and Nano Silica
title Compaction Curves and Strength of Clayey Soil Modified with Micro and Nano Silica
title_full Compaction Curves and Strength of Clayey Soil Modified with Micro and Nano Silica
title_fullStr Compaction Curves and Strength of Clayey Soil Modified with Micro and Nano Silica
title_full_unstemmed Compaction Curves and Strength of Clayey Soil Modified with Micro and Nano Silica
title_short Compaction Curves and Strength of Clayey Soil Modified with Micro and Nano Silica
title_sort compaction curves and strength of clayey soil modified with micro and nano silica
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9609462/
https://www.ncbi.nlm.nih.gov/pubmed/36295217
http://dx.doi.org/10.3390/ma15207148
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