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Materials 2015, 8(12), 8780-8792; doi:10.3390/ma8125491

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
Received: 8 October 2015 / Revised: 23 November 2015 / Accepted: 30 November 2015 / Published: 14 December 2015
View Full-Text   |   Download PDF [2741 KB, uploaded 14 December 2015]   |  

Abstract

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
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

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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