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Effects of Nano-Aluminum and Carbon Nanotube on the Rheological and Strength Properties of Self-Compacting Concrete

Moughali, Amir Hossein | 2022

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 55317 (53)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Toufigh, Vahab
  7. Abstract:
  8. In some concrete projects, the consolidation of concrete is quite challenging due to the congestion of rebar and the complex concrete placement. Self-compacting concrete (SCC) can overcome these problems. On the other hand, nanomaterials in concrete can be used to improve the engineering properties of concrete and adverse environmental effects. This study uses aluminum-nano oxide and carbon-nano tubes (by replacing 1, 3, and 5% by weight of cementitious materials) to enhance the physical and mechanical properties of SCC. Additionally, adverse environmental effects of SCC improve by replacing 35% of cement with combustion furnace slag. Experimental results showed that with increasing nano-aluminum oxide and nano-carbon tubes in self-compacting concrete, the concrete efficiency decreased, the flow resistance increased, and the filling capacity of concrete improved. Moreover, the addition of nanoparticles increased the compressive strength in all three cement grades (300, 400, and 500 kg/m3). Modifying concrete using nano-aluminum oxide and nano-carbon tubes increased the tensile strength of concrete, which nano-carbon has a more significant effect on tensile strength than that of nano-aluminum. Based on the investigation, nano-carbon tubes can be appropriate and beneficial as an admixture in SCC due to their excellent performance
  9. Keywords:
  10. Self Compacting Concrete (SCC) ; Carbon Nanotubes ; Fresh Concrete ; Hardened Concrete ; Nano-Aluminum Oxide ; Rheological Properties ; Concrete Resistance

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