Characterization of Titanium Nanotube Reinforced Cementitious Composites: Mechanical Properties, Microstructure, and Hydration
In recent years, nano-reinforcing technologies for cementitious materials have attracted considerable interest as a viable solution for compensating the poor cracking resistance of these materials. In this study, for the first time, titanium nanotubes (TNTs) were incorporated in cement pastes and th...
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MDPI AG
2019-05-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/12/10/1617 |
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| author | Hyeonseok Jee Jaeyeon Park Erfan Zalnezhad Keunhong Jeong Seung Min Woo Seungwook Seok Sungchul Bae |
| author_facet | Hyeonseok Jee Jaeyeon Park Erfan Zalnezhad Keunhong Jeong Seung Min Woo Seungwook Seok Sungchul Bae |
| author_sort | Hyeonseok Jee |
| collection | DOAJ |
| description | In recent years, nano-reinforcing technologies for cementitious materials have attracted considerable interest as a viable solution for compensating the poor cracking resistance of these materials. In this study, for the first time, titanium nanotubes (TNTs) were incorporated in cement pastes and their effect on the mechanical properties, microstructure, and early-age hydration kinetics was investigated. Experimental results showed that both compressive (~12%) and flexural strength (~23%) were enhanced with the addition of 0.5 wt.% of TNTs relative to plain cement paste at 28 days of curing. Moreover, it was found that, while TNTs accelerated the hydration kinetics of the pure cement clinker phase (C<sub>3</sub>S) in the early age of the reaction (within 24 h), there was no significant effect from adding TNTs on the hydration of ordinary Portland cement. TNTs appeared to compress the microstructure by filling the cement paste pore of sizes ranging from 10 to 100 nm. Furthermore, it could be clearly observed that the TNTs bridged the microcracks of cement paste. These results suggested that TNTs could be a great potential candidate since nano-reinforcing agents complement the shortcomings of cementitious materials. |
| first_indexed | 2024-04-12T09:51:26Z |
| format | Article |
| id | doaj.art-d770da9898fd4b09a9ab9a8ece8374d5 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-04-12T09:51:26Z |
| publishDate | 2019-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-d770da9898fd4b09a9ab9a8ece8374d52022-12-22T03:37:49ZengMDPI AGMaterials1996-19442019-05-011210161710.3390/ma12101617ma12101617Characterization of Titanium Nanotube Reinforced Cementitious Composites: Mechanical Properties, Microstructure, and HydrationHyeonseok Jee0Jaeyeon Park1Erfan Zalnezhad2Keunhong Jeong3Seung Min Woo4Seungwook Seok5Sungchul Bae6Department of Architectural Engineering, Hanyang University, Seoul 04763, KoreaDepartment of Architectural Engineering, Hanyang University, Seoul 04763, KoreaDepartment of Mechanical Engineering, Biomechacin, Dugas Rd, San Antonio, TX 78251, USADepartment of Chemistry, Nuclear and WMD Protection Research Center, Korea Military Academy, Seoul 01805, KoreaDepartment of Nuclear Engineering, Texas A&M University, College Station, TX 77843, USALyles School of Civil Engineering, Purdue University, West Lafayette, IN 47907, USADepartment of Architectural Engineering, Hanyang University, Seoul 04763, KoreaIn recent years, nano-reinforcing technologies for cementitious materials have attracted considerable interest as a viable solution for compensating the poor cracking resistance of these materials. In this study, for the first time, titanium nanotubes (TNTs) were incorporated in cement pastes and their effect on the mechanical properties, microstructure, and early-age hydration kinetics was investigated. Experimental results showed that both compressive (~12%) and flexural strength (~23%) were enhanced with the addition of 0.5 wt.% of TNTs relative to plain cement paste at 28 days of curing. Moreover, it was found that, while TNTs accelerated the hydration kinetics of the pure cement clinker phase (C<sub>3</sub>S) in the early age of the reaction (within 24 h), there was no significant effect from adding TNTs on the hydration of ordinary Portland cement. TNTs appeared to compress the microstructure by filling the cement paste pore of sizes ranging from 10 to 100 nm. Furthermore, it could be clearly observed that the TNTs bridged the microcracks of cement paste. These results suggested that TNTs could be a great potential candidate since nano-reinforcing agents complement the shortcomings of cementitious materials.https://www.mdpi.com/1996-1944/12/10/1617cementitious compositeTNTnano-reinforcingmechanical propertieshydration |
| spellingShingle | Hyeonseok Jee Jaeyeon Park Erfan Zalnezhad Keunhong Jeong Seung Min Woo Seungwook Seok Sungchul Bae Characterization of Titanium Nanotube Reinforced Cementitious Composites: Mechanical Properties, Microstructure, and Hydration Materials cementitious composite TNT nano-reinforcing mechanical properties hydration |
| title | Characterization of Titanium Nanotube Reinforced Cementitious Composites: Mechanical Properties, Microstructure, and Hydration |
| title_full | Characterization of Titanium Nanotube Reinforced Cementitious Composites: Mechanical Properties, Microstructure, and Hydration |
| title_fullStr | Characterization of Titanium Nanotube Reinforced Cementitious Composites: Mechanical Properties, Microstructure, and Hydration |
| title_full_unstemmed | Characterization of Titanium Nanotube Reinforced Cementitious Composites: Mechanical Properties, Microstructure, and Hydration |
| title_short | Characterization of Titanium Nanotube Reinforced Cementitious Composites: Mechanical Properties, Microstructure, and Hydration |
| title_sort | characterization of titanium nanotube reinforced cementitious composites mechanical properties microstructure and hydration |
| topic | cementitious composite TNT nano-reinforcing mechanical properties hydration |
| url | https://www.mdpi.com/1996-1944/12/10/1617 |
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