Influence of Nanoparticles from Waste Materials on Mechanical Properties, Durability and Microstructure of UHPC
This investigation presents the influence of various types of nanoparticles on the performance of ultra high performance concrete (UHPC). Three nanoparticles from waste materials include nano-crushed glass, nano-metakaolin, nano-rice husk ash were prepared using the milling technique. In addition, n...
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2020-10-01
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| Online Access: | https://www.mdpi.com/1996-1944/13/20/4530 |
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| author | Sahar A. Mostafa Ahmed S. Faried Ahmed A. Farghali Mohamed M. EL-Deeb Taher A. Tawfik Stanisław Majer Mohamed Abd Elrahman |
| author_facet | Sahar A. Mostafa Ahmed S. Faried Ahmed A. Farghali Mohamed M. EL-Deeb Taher A. Tawfik Stanisław Majer Mohamed Abd Elrahman |
| author_sort | Sahar A. Mostafa |
| collection | DOAJ |
| description | This investigation presents the influence of various types of nanoparticles on the performance of ultra high performance concrete (UHPC). Three nanoparticles from waste materials include nano-crushed glass, nano-metakaolin, nano-rice husk ash were prepared using the milling technique. In addition, nano-silica prepared using chemical method at the laboratory is implemented to compare the performance. Several UHPC mixes incorporating different dosages of nanoparticles up to 5% are prepared and tested. Mechanical properties, durability as well as the microstructure of UHPC mixes have been evaluated in order to study the influence of nanoparticles on the hardened characteristics of UHPC. The experimental results showed that early strength is increased by the incorporation of nanomaterials, as compared to the reference UHPC mix. The incorporation of 3% nano-rice husk ash produced the highest compressive strength at 91 day. Microstructural measurements using Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Analysis (EDX), and Thermogravimetric Analysis (TGA) confirm the role of nanomaterials in densifying the microstructure, reducing calcium hydroxide content as well as producing more C-S-H, which improves the strength and reduces the absorption of UHPC. Nanoparticles prepared from waste materials by the milling technique are comparable to chemically prepared nanosilica in improving mechanical properties, refining the microstructure and reducing the absorption of UHPC. |
| first_indexed | 2024-03-10T15:40:09Z |
| format | Article |
| id | doaj.art-20f590cdead04b308f4d0607f9405beb |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T15:40:09Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-20f590cdead04b308f4d0607f9405beb2023-11-20T16:50:39ZengMDPI AGMaterials1996-19442020-10-011320453010.3390/ma13204530Influence of Nanoparticles from Waste Materials on Mechanical Properties, Durability and Microstructure of UHPCSahar A. Mostafa0Ahmed S. Faried1Ahmed A. Farghali2Mohamed M. EL-Deeb3Taher A. Tawfik4Stanisław Majer5Mohamed Abd Elrahman6Department of Civil Engineering, Faculty of Engineering, Beni-Suef University, Beni-Suef 62511, EgyptDepartment of Civil Engineering, Faculty of Engineering, Fayoum University, Fayoum 63514, EgyptMaterials Science and Nanotechnology Department, Faculty of Postgraduate Studies for Advanced Sciences (PSAS), Beni-Suef University, Beni-Suef 62511, EgyptApplied Electrochemistry Laboratory, Chemistry Department, Faculty of Science, Beni-Suef University, Beni-suef 62511, EgyptConstruction and Building Department, Higher Institute of Engineering on 6th of October City, Giza 12592, EgyptFaculty of Civil and Environmental Engineering, West Pomeranian University of Technology, Szczecin, Al. Piastow 50, 70-311 Szczecin, PolandStructural Engineering Department, Mansoura University, Mansoura 35516, EgyptThis investigation presents the influence of various types of nanoparticles on the performance of ultra high performance concrete (UHPC). Three nanoparticles from waste materials include nano-crushed glass, nano-metakaolin, nano-rice husk ash were prepared using the milling technique. In addition, nano-silica prepared using chemical method at the laboratory is implemented to compare the performance. Several UHPC mixes incorporating different dosages of nanoparticles up to 5% are prepared and tested. Mechanical properties, durability as well as the microstructure of UHPC mixes have been evaluated in order to study the influence of nanoparticles on the hardened characteristics of UHPC. The experimental results showed that early strength is increased by the incorporation of nanomaterials, as compared to the reference UHPC mix. The incorporation of 3% nano-rice husk ash produced the highest compressive strength at 91 day. Microstructural measurements using Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Analysis (EDX), and Thermogravimetric Analysis (TGA) confirm the role of nanomaterials in densifying the microstructure, reducing calcium hydroxide content as well as producing more C-S-H, which improves the strength and reduces the absorption of UHPC. Nanoparticles prepared from waste materials by the milling technique are comparable to chemically prepared nanosilica in improving mechanical properties, refining the microstructure and reducing the absorption of UHPC.https://www.mdpi.com/1996-1944/13/20/4530ultra high performance concretenanoparticleswaste materialsmilling techniquemechanical propertiesmicrostructure |
| spellingShingle | Sahar A. Mostafa Ahmed S. Faried Ahmed A. Farghali Mohamed M. EL-Deeb Taher A. Tawfik Stanisław Majer Mohamed Abd Elrahman Influence of Nanoparticles from Waste Materials on Mechanical Properties, Durability and Microstructure of UHPC Materials ultra high performance concrete nanoparticles waste materials milling technique mechanical properties microstructure |
| title | Influence of Nanoparticles from Waste Materials on Mechanical Properties, Durability and Microstructure of UHPC |
| title_full | Influence of Nanoparticles from Waste Materials on Mechanical Properties, Durability and Microstructure of UHPC |
| title_fullStr | Influence of Nanoparticles from Waste Materials on Mechanical Properties, Durability and Microstructure of UHPC |
| title_full_unstemmed | Influence of Nanoparticles from Waste Materials on Mechanical Properties, Durability and Microstructure of UHPC |
| title_short | Influence of Nanoparticles from Waste Materials on Mechanical Properties, Durability and Microstructure of UHPC |
| title_sort | influence of nanoparticles from waste materials on mechanical properties durability and microstructure of uhpc |
| topic | ultra high performance concrete nanoparticles waste materials milling technique mechanical properties microstructure |
| url | https://www.mdpi.com/1996-1944/13/20/4530 |
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