Micromechanical Investigation of Magnesium Oxychloride Cement Paste

Abstract

In this study, nanoindentation coupled with scanning electron microscopy technique for the microstructural and micromechanical characterizations were applied on the magnesium oxychloride (MOC) cement paste. For the first time, micromechanical properties of the reaction product, phase 5 (5Mg(OH)2 &middtot;MgCl2· 8H2O) in MOC cement system were investigated. It was determined that the average indentation modulus and hardness of phase 5 were 32.5 ± 4.2 GPa and 1.03 ± 0.19 GPa, respectively. Moreover, the elastic modulus of the MOC cement paste at micro- and macro-scales were further correlated, which built a framework for predicting its macroscopic elastic modulus.

Department(s)

Civil, Architectural and Environmental Engineering

Keywords and Phrases

Elastic Moduli; Magnesium; Microstructure; Scanning Electron Microscopy; Indentation Modulus; Macroscopic Elastic Modulus; Magnesium Oxychloride; Magnesium Oxychloride (MOC) Cement; Micro-structural; Micromechanical Characterization; Micromechanical Property; Multi-scale Modeling; Cements

International Standard Serial Number (ISSN)

0950-0618

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2016 Elsevier, All rights reserved.

Publication Date

01 Feb 2016

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