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Open AccessArticle

Investigation on the Mechanical Properties of a Cement-Based Material Containing Carbon Nanotube under Drying and Freeze-Thaw Conditions

1
Guangdong Key Provincial Durability Center for Marine Structure, Shenzhen Durability Center for Civil Engineering, Department of Civil Engineering, Shenzhen University, Shenzhen 518060, China
2
Shenzhen Graduate School of Harbin Institute of Technology, Shenzhen 518055, China
*
Author to whom correspondence should be addressed.
Academic Editor: Geminiano Mancusi
Materials 2015, 8(12), 8780-8792; https://doi.org/10.3390/ma8125491
Received: 8 October 2015 / Revised: 23 November 2015 / Accepted: 30 November 2015 / Published: 14 December 2015
This paper aimed to explore the mechanical properties of a cement-based material with carbon nanotube (CNT) under drying and freeze-thaw environments. Mercury Intrusion Porosimetry and Scanning Electron Microscopy were used to analyze the pore structure and microstructure of CNT/cement composite, respectively. The experimental results showed that multi-walled CNT (MWCNT) could improve to different degrees the mechanical properties (compressive and flexural strengths) and physical performances (shrinkage and water loss) of cement-based materials under drying and freeze-thaw conditions. This paper also demonstrated that MWCNT could interconnect hydration products to enhance the performance of anti-microcracks for cement-based materials, as well as the density of materials due to CNT’s filling action. View Full-Text
Keywords: carbon nanotube (CNT); cement-based material; mechanical property; durability; drying; freeze-thaw carbon nanotube (CNT); cement-based material; mechanical property; durability; drying; freeze-thaw
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Li, W.-W.; Ji, W.-M.; Wang, Y.-C.; Liu, Y.; Shen, R.-X.; Xing, F. Investigation on the Mechanical Properties of a Cement-Based Material Containing Carbon Nanotube under Drying and Freeze-Thaw Conditions. Materials 2015, 8, 8780-8792.

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