Mechanical Properties and Environmental Evaluation of Ultra-High-Performance Concrete with Aeolian Sand
Ultra-high-performance concrete (UHPC) has received increasing attention in recent years due to its remarkable ductility, durability, and mechanical properties. However, the manufacture of UHPC can cause serious environmental issues. This work addresses the feasibility of using aeolian sand to produ...
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| Format: | Article |
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MDPI AG
2020-07-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/13/14/3148 |
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| author | Hongyan Chu Fengjuan Wang Liguo Wang Taotao Feng Danqian Wang |
| author_facet | Hongyan Chu Fengjuan Wang Liguo Wang Taotao Feng Danqian Wang |
| author_sort | Hongyan Chu |
| collection | DOAJ |
| description | Ultra-high-performance concrete (UHPC) has received increasing attention in recent years due to its remarkable ductility, durability, and mechanical properties. However, the manufacture of UHPC can cause serious environmental issues. This work addresses the feasibility of using aeolian sand to produce UHPC, and the mix design, environmental impact, and mechanical characterization of UHPC are investigated. We designed the mix proportions of the UHPC according to the modified Andreasen and Andersen particle packing model. We studied the workability, microstructure, porosity, mechanical performance, and environmental impact of UHPC with three different water/binder ratios. The following findings were noted: (1) the compressive strength, flexural strength, and Young’s modulus of the designed UHPC samples were in the ranges of 163.9–207.0 MPa, 18.0–32.2 MPa, and 49.3–58.9 GPa, respectively; (2) the compressive strength, flexural strength, and Young’s modulus of the UHPC increased with a decrease in water/binder ratio and an increase in the steel fibre content; (3) the compressive strength–Young’s modulus correlation of the UHPC could be described by an exponential formula; (4) the environmental impact of UHPC can be improved by decreasing its water/binder ratio. These findings suggest that it is possible to use aeolian sand to manufacture UHPC, and this study promotes the application of aeolian sand for this purpose. |
| first_indexed | 2024-03-10T18:28:56Z |
| format | Article |
| id | doaj.art-a9fca51c8b8d44058aceb58b821ff63a |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T18:28:56Z |
| publishDate | 2020-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-a9fca51c8b8d44058aceb58b821ff63a2023-11-20T06:49:10ZengMDPI AGMaterials1996-19442020-07-011314314810.3390/ma13143148Mechanical Properties and Environmental Evaluation of Ultra-High-Performance Concrete with Aeolian SandHongyan Chu0Fengjuan Wang1Liguo Wang2Taotao Feng3Danqian Wang4College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, ChinaJiangsu Key Laboratory of Construction Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, ChinaJiangsu Key Laboratory of Construction Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, ChinaJiangsu Key Laboratory of Construction Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, ChinaAdvanced and Innovative Materials (AIM) Group, Department of Civil, Environmental and Geomatic Engineering, University College London, London WC1E 6BT, UKUltra-high-performance concrete (UHPC) has received increasing attention in recent years due to its remarkable ductility, durability, and mechanical properties. However, the manufacture of UHPC can cause serious environmental issues. This work addresses the feasibility of using aeolian sand to produce UHPC, and the mix design, environmental impact, and mechanical characterization of UHPC are investigated. We designed the mix proportions of the UHPC according to the modified Andreasen and Andersen particle packing model. We studied the workability, microstructure, porosity, mechanical performance, and environmental impact of UHPC with three different water/binder ratios. The following findings were noted: (1) the compressive strength, flexural strength, and Young’s modulus of the designed UHPC samples were in the ranges of 163.9–207.0 MPa, 18.0–32.2 MPa, and 49.3–58.9 GPa, respectively; (2) the compressive strength, flexural strength, and Young’s modulus of the UHPC increased with a decrease in water/binder ratio and an increase in the steel fibre content; (3) the compressive strength–Young’s modulus correlation of the UHPC could be described by an exponential formula; (4) the environmental impact of UHPC can be improved by decreasing its water/binder ratio. These findings suggest that it is possible to use aeolian sand to manufacture UHPC, and this study promotes the application of aeolian sand for this purpose.https://www.mdpi.com/1996-1944/13/14/3148ultra-high-performance concretemicrostructureYoung’s modulusmechanical propertiesaeolian sandenvironmental assessment |
| spellingShingle | Hongyan Chu Fengjuan Wang Liguo Wang Taotao Feng Danqian Wang Mechanical Properties and Environmental Evaluation of Ultra-High-Performance Concrete with Aeolian Sand Materials ultra-high-performance concrete microstructure Young’s modulus mechanical properties aeolian sand environmental assessment |
| title | Mechanical Properties and Environmental Evaluation of Ultra-High-Performance Concrete with Aeolian Sand |
| title_full | Mechanical Properties and Environmental Evaluation of Ultra-High-Performance Concrete with Aeolian Sand |
| title_fullStr | Mechanical Properties and Environmental Evaluation of Ultra-High-Performance Concrete with Aeolian Sand |
| title_full_unstemmed | Mechanical Properties and Environmental Evaluation of Ultra-High-Performance Concrete with Aeolian Sand |
| title_short | Mechanical Properties and Environmental Evaluation of Ultra-High-Performance Concrete with Aeolian Sand |
| title_sort | mechanical properties and environmental evaluation of ultra high performance concrete with aeolian sand |
| topic | ultra-high-performance concrete microstructure Young’s modulus mechanical properties aeolian sand environmental assessment |
| url | https://www.mdpi.com/1996-1944/13/14/3148 |
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