Performance of cementitious materials produced by incorporating surface treated multiwall carbon nanotubes and silica fume
The outstanding mechanical properties of carbon nanotubes (CNTs) highlight them as potential candidates for cementitious material reinforcement. However, their low surface friction and the Van der Waals forces of attraction between them, cause the CNTs to aggregate with each other rather than bind w...
محفوظ في:
| المؤلف الرئيسي: | |
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| مؤلفون آخرون: | , , |
| التنسيق: | article |
| منشور في: |
2016
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| الموضوعات: | |
| الوصول للمادة أونلاين: | http://hdl.handle.net/11073/16320 |
| الوسوم: |
إضافة وسم
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| _version_ | 1864513437926686720 |
|---|---|
| author | Al-Tamimi, Adil |
| author2 | Hassan, Noha M. Fattah, Kazi Parvez Talachi, Amirhooman |
| author2_role | author author author |
| author_facet | Al-Tamimi, Adil Hassan, Noha M. Fattah, Kazi Parvez Talachi, Amirhooman |
| author_role | author |
| dc.creator.none.fl_str_mv | Al-Tamimi, Adil Hassan, Noha M. Fattah, Kazi Parvez Talachi, Amirhooman |
| dc.date.none.fl_str_mv | 2016-07-01 2018-11-05T09:19:19Z 2018-11-05T09:19:19Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | Al-Tamimi, Adil, Noha M. Hassan, Kazi Fattah, and Amirhooman Talachi. "Performance of cementitious materials produced by incorporating surface treated multiwall carbon nanotubes and silica fume." Construction and Building Materials 114 (2016): 934-945. [Comment: [5-YEAR IMPACT FACTOR: 2.884; PUBLISHER: ELSEVIER]] 0950-0618 http://hdl.handle.net/11073/16320 10.1016/j.conbuildmat.2016.03.216 |
| dc.language.none.fl_str_mv | en_US |
| dc.publisher.none.fl_str_mv | Elsevier |
| dc.relation.none.fl_str_mv | Construction and Building Materials https://doi.org/10.1016/j.conbuildmat.2016.03.216 |
| dc.subject.none.fl_str_mv | Carbon nano tube CNT Silica fumes Dispersion Surface functionalization SEM Cement composite Mortar |
| dc.title.none.fl_str_mv | Performance of cementitious materials produced by incorporating surface treated multiwall carbon nanotubes and silica fume |
| dc.type.none.fl_str_mv | info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | The outstanding mechanical properties of carbon nanotubes (CNTs) highlight them as potential candidates for cementitious material reinforcement. However, their low surface friction and the Van der Waals forces of attraction between them, cause the CNTs to aggregate with each other rather than bind with the cement matrix. A number of methods have been investigated by researchers to reduce the aggregation, improve dispersion and activate the graphite surface to enhance its interfacial interaction. These methods involve surface functionalization and coating, optimal physical blending, use of surfactant and other admixtures. This research investigates the use of silica fumes (an admixture), surface functionalized CNTs and cement paste to overcome those obstacles. CNTs with polar impurities end groups OH and COOH were examined. Mortar samples with non-functionalized CNTs dispersed in water solution, another with non-dispersed, non-functionalized CNTs, and a third batch with no CNTs (as control) was used also studied. Silica fumes volume fraction was varied from 0 to 30% to determine its effect. Compressive and flexural strengths of the different mixes were measured and compared. Qualitative analysis using Scanning Electron Microscope (SEM) and Energy-Dispersive Spectroscopy (EDS) were carried out to study the morphology of each mix. Results reveal a much higher enhancement in strength both compressive and flexural strengths for the functionalized CNTs with 30% silica fumes over the other samples. |
| format | article |
| id | aus_31225830a9387980eaf7b5e609c28efd |
| identifier_str_mv | Al-Tamimi, Adil, Noha M. Hassan, Kazi Fattah, and Amirhooman Talachi. "Performance of cementitious materials produced by incorporating surface treated multiwall carbon nanotubes and silica fume." Construction and Building Materials 114 (2016): 934-945. [Comment: [5-YEAR IMPACT FACTOR: 2.884; PUBLISHER: ELSEVIER]] 0950-0618 10.1016/j.conbuildmat.2016.03.216 |
| language_invalid_str_mv | en_US |
| network_acronym_str | aus |
| network_name_str | aus |
| oai_identifier_str | oai:repository.aus.edu:11073/16320 |
| publishDate | 2016 |
| publisher.none.fl_str_mv | Elsevier |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| spelling | Performance of cementitious materials produced by incorporating surface treated multiwall carbon nanotubes and silica fumeAl-Tamimi, AdilHassan, Noha M.Fattah, Kazi ParvezTalachi, AmirhoomanCarbon nano tubeCNTSilica fumesDispersionSurface functionalizationSEMCement compositeMortarThe outstanding mechanical properties of carbon nanotubes (CNTs) highlight them as potential candidates for cementitious material reinforcement. However, their low surface friction and the Van der Waals forces of attraction between them, cause the CNTs to aggregate with each other rather than bind with the cement matrix. A number of methods have been investigated by researchers to reduce the aggregation, improve dispersion and activate the graphite surface to enhance its interfacial interaction. These methods involve surface functionalization and coating, optimal physical blending, use of surfactant and other admixtures. This research investigates the use of silica fumes (an admixture), surface functionalized CNTs and cement paste to overcome those obstacles. CNTs with polar impurities end groups OH and COOH were examined. Mortar samples with non-functionalized CNTs dispersed in water solution, another with non-dispersed, non-functionalized CNTs, and a third batch with no CNTs (as control) was used also studied. Silica fumes volume fraction was varied from 0 to 30% to determine its effect. Compressive and flexural strengths of the different mixes were measured and compared. Qualitative analysis using Scanning Electron Microscope (SEM) and Energy-Dispersive Spectroscopy (EDS) were carried out to study the morphology of each mix. Results reveal a much higher enhancement in strength both compressive and flexural strengths for the functionalized CNTs with 30% silica fumes over the other samples.Elsevier2018-11-05T09:19:19Z2018-11-05T09:19:19Z2016-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfAl-Tamimi, Adil, Noha M. Hassan, Kazi Fattah, and Amirhooman Talachi. "Performance of cementitious materials produced by incorporating surface treated multiwall carbon nanotubes and silica fume." Construction and Building Materials 114 (2016): 934-945. [Comment: [5-YEAR IMPACT FACTOR: 2.884; PUBLISHER: ELSEVIER]]0950-0618http://hdl.handle.net/11073/1632010.1016/j.conbuildmat.2016.03.216en_USConstruction and Building Materialshttps://doi.org/10.1016/j.conbuildmat.2016.03.216oai:repository.aus.edu:11073/163202024-08-22T12:15:09Z |
| spellingShingle | Performance of cementitious materials produced by incorporating surface treated multiwall carbon nanotubes and silica fume Al-Tamimi, Adil Carbon nano tube CNT Silica fumes Dispersion Surface functionalization SEM Cement composite Mortar |
| status_str | publishedVersion |
| title | Performance of cementitious materials produced by incorporating surface treated multiwall carbon nanotubes and silica fume |
| title_full | Performance of cementitious materials produced by incorporating surface treated multiwall carbon nanotubes and silica fume |
| title_fullStr | Performance of cementitious materials produced by incorporating surface treated multiwall carbon nanotubes and silica fume |
| title_full_unstemmed | Performance of cementitious materials produced by incorporating surface treated multiwall carbon nanotubes and silica fume |
| title_short | Performance of cementitious materials produced by incorporating surface treated multiwall carbon nanotubes and silica fume |
| title_sort | Performance of cementitious materials produced by incorporating surface treated multiwall carbon nanotubes and silica fume |
| topic | Carbon nano tube CNT Silica fumes Dispersion Surface functionalization SEM Cement composite Mortar |
| url | http://hdl.handle.net/11073/16320 |