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Journal of Nanomaterials
Volume 2015, Article ID 430578, 8 pages
http://dx.doi.org/10.1155/2015/430578
Research Article

Effect of MXene (Nano-Ti3C2) on Early-Age Hydration of Cement Paste

1School of Materials Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China
2Shandong Hongyi Technology Co. Ltd., Linyi, Shandong 276034, China
3College of Materials Science and Engineering, Nanjing Technology University, Nanjing 211800, China

Received 18 January 2015; Revised 21 March 2015; Accepted 25 March 2015

Academic Editor: Stefano Bellucci

Copyright © 2015 Haibin Yin et al. 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.

Abstract

As a new two-dimensional material, MXene (nano-Ti3C2) has been widely applied in many fields, especially for reinforced composite materials. In this paper, mechanical testing, X-ray diffraction (XRD), hydration heat, scanning electron microscope (SEM), and EDS analysis were used to analyze the impact of MXene on cement hydration properties. The obtained results revealed that (a) MXene could greatly improve the early compressive strength of cement paste with 0.04 wt% concentration, (b) the phase type of early-age hydration products has not been changed after the addition of MXene, (c) hydration exothermic rate within 72 h has small difference at different amount of MXene, and (d) morphologies of hydration products were varied with the dosage of MXene, a lot of tufted ettringites appeared in 3 d hydration products when the content of MXene was 0.04 wt%, which will have a positive effect on improving the early mechanical properties of cement paste. MXene has inhibited the Portland cement hydration process; the main role of MXene in the cement hydration process is to promote the messy ettringite becoming regular distribution at a node and form network connection structure in the crystals growth process, making the mechanics performance of cement paste significantly improved.