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    Elastic Properties of Tricalcium Aluminate from High-Pressure Experiments and First-Principles Calculations

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    Type
    Article
    Authors
    Moon, Juhyuk
    Yoon, Seyoon cc
    Wentzcovitch, Renata M.
    Clark, Simon M.
    Monteiro, Paulo J. M. cc
    KAUST Grant Number
    KUS-l1-004021
    Date
    2012-06-04
    Online Publication Date
    2012-06-04
    Print Publication Date
    2012-09
    Permanent link to this record
    http://hdl.handle.net/10754/598126
    
    Metadata
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    Abstract
    The structure and elasticity of tricalcium aluminate (C 3A) have been experimentally and theoretically studied. From high-pressure X-ray diffraction experiments, the bulk modulus of 102(6) and 110(3) GPa were obtained by fitting second- and third-order finite strain equation of state, respectively. First-principles calculations with a generalized gradient approximation gave an isotropic bulk modulus of 102.1 GPa and an isothermal bulk modulus of 106.0 GPa. The static calculations using the exchange-correlation functional show an excellent agreement with the experimental measurements. Based on the agreement, accurate elastic constants and other elastic moduli were computed. The slight difference of behavior at high pressure can be explained by the infiltration of pressure-transmitting silicone oil into structural holes in C 3A. The computed elastic and mechanical properties will be useful in understanding structural and mechanical properties of cementitious materials, particularly with the increasing interest in the advanced applications at the nanoscale. © 2012 The American Ceramic Society.
    Citation
    Moon J, Yoon S, Wentzcovitch RM, Clark SM, Monteiro PJM (2012) Elastic Properties of Tricalcium Aluminate from High-Pressure Experiments and First-Principles Calculations. J Am Ceram Soc 95: 2972–2978. Available: http://dx.doi.org/10.1111/j.1551-2916.2012.05301.x.
    Sponsors
    Supported in part by Award No. KUS-l1-004021, made by King Abdullah University of Science and Technology (KAUST).The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. RMW was supported by NSF/EAR 1047629. The UC Berkeley Molecular Graphics and Computation Facility is supported by NSF/CHE-0840505.
    Publisher
    Wiley
    Journal
    Journal of the American Ceramic Society
    DOI
    10.1111/j.1551-2916.2012.05301.x
    ae974a485f413a2113503eed53cd6c53
    10.1111/j.1551-2916.2012.05301.x
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