Shear Behavior of Recycled Fine Aggregate Reinforced by Nano-MgO Modified Cement

In order to study the mechanical modification effect of nano-MgO on cement-reinforced recycled fine aggregate (CRA), direct shear tests and triaxial shear tests were carried out. In the test of recycled fine aggregate reinforced by nano-MgO modified cement (MCRA), the cement content was fixed at 2%,...

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Detalles Bibliográficos
Autores principales: Zhu, Ting, Shou, Yitong, Chen, Xiaoqing, Lv, Beifeng, Huang, Xianwen, Yu, Yanfei, Li, Cuihong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9610497/
https://www.ncbi.nlm.nih.gov/pubmed/36295255
http://dx.doi.org/10.3390/ma15207188
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author Zhu, Ting
Shou, Yitong
Chen, Xiaoqing
Lv, Beifeng
Huang, Xianwen
Yu, Yanfei
Li, Cuihong
author_facet Zhu, Ting
Shou, Yitong
Chen, Xiaoqing
Lv, Beifeng
Huang, Xianwen
Yu, Yanfei
Li, Cuihong
author_sort Zhu, Ting
collection PubMed
description In order to study the mechanical modification effect of nano-MgO on cement-reinforced recycled fine aggregate (CRA), direct shear tests and triaxial shear tests were carried out. In the test of recycled fine aggregate reinforced by nano-MgO modified cement (MCRA), the cement content was fixed at 2%, and the nano-MgO content varied between 0%, 0.5%, 1.0%, 1.5% and 2.0%. The test results showed that adding nano-MgO can greatly increase both the direct shear strength and triaxial shear strength of MCRA. This increase in direct shear strength was mainly attributed to the increase in cohesion. However, this increase in triaxial shear strength was attributed to the simultaneous increase in the cohesion and friction angle.
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spelling pubmed-96104972022-10-28 Shear Behavior of Recycled Fine Aggregate Reinforced by Nano-MgO Modified Cement Zhu, Ting Shou, Yitong Chen, Xiaoqing Lv, Beifeng Huang, Xianwen Yu, Yanfei Li, Cuihong Materials (Basel) Article In order to study the mechanical modification effect of nano-MgO on cement-reinforced recycled fine aggregate (CRA), direct shear tests and triaxial shear tests were carried out. In the test of recycled fine aggregate reinforced by nano-MgO modified cement (MCRA), the cement content was fixed at 2%, and the nano-MgO content varied between 0%, 0.5%, 1.0%, 1.5% and 2.0%. The test results showed that adding nano-MgO can greatly increase both the direct shear strength and triaxial shear strength of MCRA. This increase in direct shear strength was mainly attributed to the increase in cohesion. However, this increase in triaxial shear strength was attributed to the simultaneous increase in the cohesion and friction angle. MDPI 2022-10-15 /pmc/articles/PMC9610497/ /pubmed/36295255 http://dx.doi.org/10.3390/ma15207188 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
Zhu, Ting
Shou, Yitong
Chen, Xiaoqing
Lv, Beifeng
Huang, Xianwen
Yu, Yanfei
Li, Cuihong
Shear Behavior of Recycled Fine Aggregate Reinforced by Nano-MgO Modified Cement
title Shear Behavior of Recycled Fine Aggregate Reinforced by Nano-MgO Modified Cement
title_full Shear Behavior of Recycled Fine Aggregate Reinforced by Nano-MgO Modified Cement
title_fullStr Shear Behavior of Recycled Fine Aggregate Reinforced by Nano-MgO Modified Cement
title_full_unstemmed Shear Behavior of Recycled Fine Aggregate Reinforced by Nano-MgO Modified Cement
title_short Shear Behavior of Recycled Fine Aggregate Reinforced by Nano-MgO Modified Cement
title_sort shear behavior of recycled fine aggregate reinforced by nano-mgo modified cement
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9610497/
https://www.ncbi.nlm.nih.gov/pubmed/36295255
http://dx.doi.org/10.3390/ma15207188
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