Energy Dissipation Capacity of Cementitious Nanocomposite Reinforced by Hybrid Carbon Nanotubes
Document Type
Article
Publication Date
3-14-2022
Publication Title
Construction and Building Materials
Volume
323
Abstract
Nanomaterials have a significant effect on the construction industry in terms of modifying concrete properties. However, accelerated microcracks due to brittle nature of cement paste cause low energy absorption in cement-based composites. Carbon nanotubes (CNTs) are promising materials to address this problem if not all. The main objective of this experimental investigation is to assess the effect of reinforcing cement-based composites with the low dosage of functionalized (COOH group) hybrid carbon nanotubes (single-walled and multi-walled carbon nanotubes). A Field Emission Electron Microscope (FESEM) was used to evaluate the morphology of the composite and CNTs’ bridging effect in the cement matrix. The results indicated the composite incorporating the 0.4 wt% Hybrid CNTs showed the highest increase in the energy absorption and improved the failure mechanism by decreasing the crack propagation and debris spatter.
Keywords
Cement-based composites; Crack; Dispersion; Energy absorption; Failure mechanism; Hybrid carbon nanotubes; Impact test; Multi-walled carbon nanotubes (MWCNTs); Single-walled carbon nanotube (SWCNTs)
Disciplines
Energy Systems | Nanotechnology Fabrication | Power and Energy
Repository Citation
Jazaei, R.,
Karakouzian, M.,
O'Toole, B.,
Moon, J.,
Gharehdaghi, S.
(2022).
Energy Dissipation Capacity of Cementitious Nanocomposite Reinforced by Hybrid Carbon Nanotubes.
Construction and Building Materials, 323
http://dx.doi.org/10.1016/j.conbuildmat.2022.126396