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- Title
Structural Properties and Damage Detection Capability of Carbon Nanotube Modified Mortars after Freeze-Thaw.
- Authors
Alafogianni, Panagiota; Tragazikis, Ilias; Balaskas, Anastasios; Barkoula, Nektaria-Marianthi
- Abstract
Here we explore the structural properties and damage sensing of cementitious mortars after a freeze-thaw process (F-T) as a function of nano-modification. For this purpose, carbon nanotubes were added at 0.2–0.8 wt.% cement using two different dispersive agents. F-T resulted in reduced fracture energy in nano-modified specimens prepared using superplasticizer as a dispersant while the opposite held true for the surfactant-containing ones. All nano-modified mortars possessed significantly higher fracture energy compared to the plain specimens after F-T (up to 73% improvement). The acoustic emission activity was lower after F-T, while acoustic emission indicators revealed a more tensile mode of fracture in both plain and nano-modified mortars.
- Subjects
PROPERTY damage; MORTAR; ACOUSTIC emission; CARBON nanotubes; CARBON
- Publication
Materials (1996-1944), 2019, Vol 12, Issue 11, p1747
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma12111747