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    High pressure study of low compressibility tetracalcium aluminum carbonate hydrates 3CaO·Al2O3·CaCO3·11H2O

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    Type
    Article
    Authors
    Moon, Juhyuk
    Oh, Jae Eun
    Balonis, Magdalena
    Glasser, Fredrik P.
    Clark, Simon M.
    Monteiro, Paulo J. M. cc
    KAUST Grant Number
    KUS-11-004021
    Date
    2012-01
    Permanent link to this record
    http://hdl.handle.net/10754/598479
    
    Metadata
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    Abstract
    Synchrotron X-ray diffraction data was collected from a sample of monocarboaluminate 3CaO•Al2O3•CaCO 3•11H2O from ambient pressure to 4.3 GPa. The refined crystal structure at ambient pressure is triclinic with parameters a = 5.77(2) Å, b = 8.47(5) Å, c = 9.93(4) Å, α = 64.6(2)°, β = 82.8(3)°, γ = 81.4(4)°, and space group of P1 or P1̄. It showed some degree of perfectly reversible pressure-induced dehydration with a non-hygroscopic pressure-transmitting medium. However the dehydration effect does not critically affect a bulk modulus due to its strong framework. The isothermal bulk modulus of monocarboaluminate was found to be 53(5) GPa and 54(4) GPa with 3rd order and 2nd order Birch-Murnaghan Equation of state, respectively. That value is higher than for any other reported AFm or AFt phase. The pressure-volume behavior of the monocarboaluminate was compared with that of previous studied hemicarboaluminate. © 2011 Elsevier Ltd. All rights reserved.
    Citation
    Moon J, Oh JE, Balonis M, Glasser FP, Clark SM, et al. (2012) High pressure study of low compressibility tetracalcium aluminum carbonate hydrates 3CaO·Al2O3·CaCO3·11H2O. Cement and Concrete Research 42: 105–110. Available: http://dx.doi.org/10.1016/j.cemconres.2011.08.004.
    Sponsors
    This publication was based on work supported in part by Award No. KUS-11-004021, 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.
    Publisher
    Elsevier BV
    Journal
    Cement and Concrete Research
    DOI
    10.1016/j.cemconres.2011.08.004
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.cemconres.2011.08.004
    Scopus Count
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