Microstructure Modification of Carbonated Cement Paste with Six Kinds of Modern Microscopic Instruments
Publication: Journal of Materials in Civil Engineering
Volume 27, Issue 10
Abstract
The authors studied the solid-phase composition and morphology, pore structure, damage, and deterioration of microstructure, and nano-mechanical properties of cementitious materials in accelerated carbonation reaction. The solid-phase composition and morphology were investigated by X-ray diffraction (XRD), thermal gravimetric and differential scanning calorimetry (TG-DSC), and environmental scanning electron microscopy (ESEM). The characteristic of pore structure was obtained by mercury intrusion porosimetry (MIP) tests. Furthermore, the damage deterioration of microstructure was detected by X-ray computed tomography (XCT). Finally, the nano-mechanical properties were investigated by nanoindentation. These microstructure parameters have paved more precise way for the carbonation model.
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Acknowledgments
This work is supported by a grant from the Major State Basic Research Development Program of People’s Republic of China (the 973 Project) (No. 2011CB013801) and the National Natural Science Foundation of China (No. 51308290), and the Natural Science Foundation of Jiangsu Province (No. BK20130947), and College Natural Science Foundation of Jiangsu Province (No. 14KJB560008).
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Published In
Journal of Materials in Civil Engineering
Volume 27 • Issue 10 • October 2015
Copyright
© 2014 American Society of Civil Engineers.
History
Received: Apr 18, 2014
Accepted: Sep 29, 2014
Published online: Dec 9, 2014
Discussion open until: May 9, 2015
Published in print: Oct 1, 2015
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