Mechanical Characteristics of Cement Paste in the Presence of Carbon Nanotubes and Silica Oxide Nanoparticles: An Experimental Study
| Autor: | Visar Farhangi, Mehdi Zadehmohamad, Alireza Joshaghani, Mohammad Ahmadzadeh, Marzieh Ramezani Farani, Moses Karakouzian |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Scanning electron microscope 0211 other engineering and technologies Oxide Nanoparticle 02 engineering and technology Carbon nanotube silica nanoparticles lcsh:Technology Article law.invention Nanomaterials chemistry.chemical_compound Flexural strength law 021105 building & construction General Materials Science Composite material carbon nanotube lcsh:Microscopy lcsh:QC120-168.85 Cement lcsh:QH201-278.5 lcsh:T 021001 nanoscience & nanotechnology compressive strength Compressive strength chemistry lcsh:TA1-2040 flexural strength lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering 0210 nano-technology lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 |
| Zdroj: | Materials Materials, Vol 14, Iss 1347, p 1347 (2021) Volume 14 Issue 6 |
| ISSN: | 1996-1944 |
| Popis: | Considering the remarkable characteristics of nanomaterials, previous research studies investigated the effects of incorporating different types of these materials on improving the concrete properties. However, further studies are required to evaluate the complementary hybridization and synergistic influence of nanomaterials. In this research, the combined effect of adding nano silica particles (NS) and multi-walled carbon nanotubes (MWCNT) on enhancing both the compressive and flexural strengths of the cement paste was investigated. Moreover, the morphology of the interface between cement paste and aggregates was studied by scanning electron microscopy (SEM). The mixtures were prepared using three different portions of MWCNT and NS. Electron microscopy images indicated a uniform distribution of nanoparticles in the cement matrix, enhanced hydration reactions, and increased density. Based on the experiments’ outcomes, the combined utilization of silica and carbon nanomaterials in the cement paste did not necessarily result in the maximum compressive and flexural strengths. Furthermore, it was observed that the use of higher percentages of pristine NS in the absence of MWCNT can lead to further enhancement of strength properties of the cement paste. |
| Databáze: | OpenAIRE |
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