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Open AccessArticle

Structural Properties and Damage Detection Capability of Carbon Nanotube Modified Mortars after Freeze-Thaw

Department of Materials Science and Engineering, University of Ioannina, 45110 Ioannina, Greece
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Materials 2019, 12(11), 1747; https://doi.org/10.3390/ma12111747
Received: 6 May 2019 / Revised: 21 May 2019 / Accepted: 26 May 2019 / Published: 29 May 2019
(This article belongs to the Special Issue Carbon Nanotube Nanocomposites: Modeling and Applications)
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. View Full-Text
Keywords: CNTs; dispersive agents; freeze-thaw; fracture; damage monitoring CNTs; dispersive agents; freeze-thaw; fracture; damage monitoring
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MDPI and ACS Style

Alafogianni, P.; Tragazikis, I.; Balaskas, A.; Barkoula, N.-M. Structural Properties and Damage Detection Capability of Carbon Nanotube Modified Mortars after Freeze-Thaw. Materials 2019, 12, 1747.

AMA Style

Alafogianni P, Tragazikis I, Balaskas A, Barkoula N-M. Structural Properties and Damage Detection Capability of Carbon Nanotube Modified Mortars after Freeze-Thaw. Materials. 2019; 12(11):1747.

Chicago/Turabian Style

Alafogianni, Panagiota; Tragazikis, Ilias; Balaskas, Anastasios; Barkoula, Nektaria-Marianthi. 2019. "Structural Properties and Damage Detection Capability of Carbon Nanotube Modified Mortars after Freeze-Thaw" Materials 12, no. 11: 1747.

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