CNT/DFNS nanoparticles as a valuable admixture for ultrahigh-performance concrete
Effective dispersion of carbon nanotubes (CNTs) is essential for optimizing low water-to-binder concrete mixtures. At higher concentrations, dispersing CNTs becomes highly challenging with standard plasticizers. This study investigates the production of concrete incorporating CNT/DFNS and CNTs parti...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-03-01
|
| Series: | Results in Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025001720 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832585042307579904 |
|---|---|
| author | Seyed Alireza Nasabolhosseini Amin Honarbakhsh Rahele Zhiani Seyed Mojtaba Movahedifar Mehdi Nobahari |
| author_facet | Seyed Alireza Nasabolhosseini Amin Honarbakhsh Rahele Zhiani Seyed Mojtaba Movahedifar Mehdi Nobahari |
| author_sort | Seyed Alireza Nasabolhosseini |
| collection | DOAJ |
| description | Effective dispersion of carbon nanotubes (CNTs) is essential for optimizing low water-to-binder concrete mixtures. At higher concentrations, dispersing CNTs becomes highly challenging with standard plasticizers. This study investigates the production of concrete incorporating CNT/DFNS and CNTs particles with a grafted layer of dendritic fibrous nano-silica (DFNS) on their surface. Concrete, selected as an ideal low water-to-binder mix with high silica fume content, demonstrated that all CNT/DFNS samples reduced viscosity, extended workability, and required less mixing power than concrete with only CNTs. Notably, CNT/DFNS also significantly lowered the need for polycarboxylate superplasticizer for effective dispersion. Additionally, concrete with CNT/DFNS exhibited an 18 % increase in compressive strength compared to CNTs-only concrete. Scanning electron microscopy confirmed that CNT/DFNS achieved superior dispersion within the concrete matrix. Given their reduced viscosity, enhanced workability, decreased energy needs, and improved strength, CNT/DFNS show promising potential to advance concrete manufacturing. This marks the first instance of covalently bonding microporous DFNS to CNTs for concrete production. This breakthrough allows for the simple fabrication of ultra-high-performance concretes with outstanding strength and workability, showcasing the significant potential of self-dispersible DFNS and CNTs in cutting-edge concrete technologies. |
| format | Article |
| id | doaj-art-039d3c91ce5f4757b5e20fa8acdc4a0d |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-039d3c91ce5f4757b5e20fa8acdc4a0d2025-01-27T04:22:09ZengElsevierResults in Engineering2590-12302025-03-0125104084CNT/DFNS nanoparticles as a valuable admixture for ultrahigh-performance concreteSeyed Alireza Nasabolhosseini0Amin Honarbakhsh1Rahele Zhiani2Seyed Mojtaba Movahedifar3Mehdi Nobahari4Department of Civil Engineering, Neyshabur Branch, Islamic Azad University, Neyshabur, IranDepartment of Civil Engineering, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran; New Materials Technology and Processing Research Center, Department of Civil Engineering, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran; Corresponding author.New Materials Technology and Processing Research Center, Department of Civil Engineering, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran; Advanced Research Center for Chemistry, Biochemistry and Nanomaterial; Neyshabur Branch, Islamic Azad University, Neyshabur, Iran; Department of chemistry, Neyshabur Branch, Islamic Azad University, Neyshabur, IranDepartment of Civil Engineering, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran; New Materials Technology and Processing Research Center, Department of Civil Engineering, Neyshabur Branch, Islamic Azad University, Neyshabur, IranDepartment of Civil Engineering, Neyshabur Branch, Islamic Azad University, Neyshabur, Iran; New Materials Technology and Processing Research Center, Department of Civil Engineering, Neyshabur Branch, Islamic Azad University, Neyshabur, IranEffective dispersion of carbon nanotubes (CNTs) is essential for optimizing low water-to-binder concrete mixtures. At higher concentrations, dispersing CNTs becomes highly challenging with standard plasticizers. This study investigates the production of concrete incorporating CNT/DFNS and CNTs particles with a grafted layer of dendritic fibrous nano-silica (DFNS) on their surface. Concrete, selected as an ideal low water-to-binder mix with high silica fume content, demonstrated that all CNT/DFNS samples reduced viscosity, extended workability, and required less mixing power than concrete with only CNTs. Notably, CNT/DFNS also significantly lowered the need for polycarboxylate superplasticizer for effective dispersion. Additionally, concrete with CNT/DFNS exhibited an 18 % increase in compressive strength compared to CNTs-only concrete. Scanning electron microscopy confirmed that CNT/DFNS achieved superior dispersion within the concrete matrix. Given their reduced viscosity, enhanced workability, decreased energy needs, and improved strength, CNT/DFNS show promising potential to advance concrete manufacturing. This marks the first instance of covalently bonding microporous DFNS to CNTs for concrete production. This breakthrough allows for the simple fabrication of ultra-high-performance concretes with outstanding strength and workability, showcasing the significant potential of self-dispersible DFNS and CNTs in cutting-edge concrete technologies.http://www.sciencedirect.com/science/article/pii/S2590123025001720NanoparticleCarbon nanotubesDendritic fibrous nano silicaConcrete |
| spellingShingle | Seyed Alireza Nasabolhosseini Amin Honarbakhsh Rahele Zhiani Seyed Mojtaba Movahedifar Mehdi Nobahari CNT/DFNS nanoparticles as a valuable admixture for ultrahigh-performance concrete Results in Engineering Nanoparticle Carbon nanotubes Dendritic fibrous nano silica Concrete |
| title | CNT/DFNS nanoparticles as a valuable admixture for ultrahigh-performance concrete |
| title_full | CNT/DFNS nanoparticles as a valuable admixture for ultrahigh-performance concrete |
| title_fullStr | CNT/DFNS nanoparticles as a valuable admixture for ultrahigh-performance concrete |
| title_full_unstemmed | CNT/DFNS nanoparticles as a valuable admixture for ultrahigh-performance concrete |
| title_short | CNT/DFNS nanoparticles as a valuable admixture for ultrahigh-performance concrete |
| title_sort | cnt dfns nanoparticles as a valuable admixture for ultrahigh performance concrete |
| topic | Nanoparticle Carbon nanotubes Dendritic fibrous nano silica Concrete |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025001720 |
| work_keys_str_mv | AT seyedalirezanasabolhosseini cntdfnsnanoparticlesasavaluableadmixtureforultrahighperformanceconcrete AT aminhonarbakhsh cntdfnsnanoparticlesasavaluableadmixtureforultrahighperformanceconcrete AT rahelezhiani cntdfnsnanoparticlesasavaluableadmixtureforultrahighperformanceconcrete AT seyedmojtabamovahedifar cntdfnsnanoparticlesasavaluableadmixtureforultrahighperformanceconcrete AT mehdinobahari cntdfnsnanoparticlesasavaluableadmixtureforultrahighperformanceconcrete |