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Open AccessArticle

Investigation of the Role of Nano-Titanium on Corrosion and Thermal Performance of Structural Concrete with Macro-Encapsulated PCM

1
School of Architecture and Built Environment, the University of Newcastle, Callaghan, NSW 2308, Australia
2
ARC Centre of Excellence for Geotechnical Science and Engineering, the University of Newcastle, Callaghan, NSW 2308, Australia
*
Authors to whom correspondence should be addressed.
Academic Editor: Ana Ines Fernandez Renna
Molecules 2019, 24(7), 1360; https://doi.org/10.3390/molecules24071360
Received: 4 March 2019 / Revised: 28 March 2019 / Accepted: 4 April 2019 / Published: 6 April 2019
(This article belongs to the Special Issue Phase Change Materials)
The present study aims to investigate the impact of thermal energy storage aggregate (TESA) and nano-titanium (NT) on properties of structural concrete. TESA was made of scoria encapsulated with phase change materials (PCMs). Coarse aggregates were replaced by TESA at 100% by volume of aggregate and NT was added at 5% by weight of cement. Compressive strength, probability of corrosion, thermal performance, and microstructure properties were studied. The results indicated that the presence of TESA reduced the compressive strength of concrete, although the strength was still high enough to be used as structural concrete. The use of TESA significantly improved the thermal performance of concrete, and slightly improved the resistance of corrosion in concrete. The thermal test results showed that TESA concrete reduces the peak temperature by 2 °C compared to the control. The addition of NT changed the microstructure of concrete, which resulted in higher compressive strength. Additionally, the use of NT further enhanced the thermal performance of TESA concrete by reducing the probability of corrosion remarkably. These results confirmed the crucial role of NT in improving the permeability and the thermal conductivity of mixtures containing PCM. In other words, the charging and discharging of TESA was enhanced with the presence of NT in the mixture. View Full-Text
Keywords: phase change materials; thermal energy storage aggregates; nano-titanium; accelerated corrosion test; thermal conductivity phase change materials; thermal energy storage aggregates; nano-titanium; accelerated corrosion test; thermal conductivity
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MDPI and ACS Style

Mohseni, E.; Tang, W.; Wang, S. Investigation of the Role of Nano-Titanium on Corrosion and Thermal Performance of Structural Concrete with Macro-Encapsulated PCM. Molecules 2019, 24, 1360. https://doi.org/10.3390/molecules24071360

AMA Style

Mohseni E, Tang W, Wang S. Investigation of the Role of Nano-Titanium on Corrosion and Thermal Performance of Structural Concrete with Macro-Encapsulated PCM. Molecules. 2019; 24(7):1360. https://doi.org/10.3390/molecules24071360

Chicago/Turabian Style

Mohseni, Ehsan; Tang, Waiching; Wang, Shanyong. 2019. "Investigation of the Role of Nano-Titanium on Corrosion and Thermal Performance of Structural Concrete with Macro-Encapsulated PCM" Molecules 24, no. 7: 1360. https://doi.org/10.3390/molecules24071360

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