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    The study of disorder and nanocrystallinity in C–S–H, supplementary cementitious materials and geopolymers using pair distribution function analysis

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    Type
    Article
    Authors
    Meral, Cagla
    Benmore, C.J.
    Monteiro, Paulo J. M. cc
    KAUST Grant Number
    KUS-l1-004021
    Date
    2011-07
    Permanent link to this record
    http://hdl.handle.net/10754/599970
    
    Metadata
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    Abstract
    Significant progress was achieved with the application of Rietveld method to characterize the crystalline phases in portland cement paste. However, to obtain detailed information on the amorphous or poorly crystalline phases, it is necessary to analyze the total scattering data. The pair distribution function (PDF) method has been successfully used in the study of liquids and amorphous solids. The method takes the Sine Fourier transform of the measured structure factor over a wide momentum transfer range, providing a direct measure of the probability of finding an atom surrounding a central atom at a radial distance away. The obtained experimental characteristic distances can be also used to validate the predictions by the theoretical models, such as, molecular dynamics, ab initio simulations and density functional theory. The paper summarizes recent results of PDF analysis on silica fume, rice husk ash, fly ash, ASR gel, C-S-H and geopolymers. © 2011 Elsevier Ltd. All rights reserved.
    Citation
    Meral C, Benmore CJ, Monteiro PJM (2011) The study of disorder and nanocrystallinity in C–S–H, supplementary cementitious materials and geopolymers using pair distribution function analysis. Cement and Concrete Research 41: 696–710. Available: http://dx.doi.org/10.1016/j.cemconres.2011.03.027.
    Sponsors
    This work was supported by the U.S. DOE, Argonne National Laboratory under contract number DE-AC02-06CH11357. This publication was based on work supported in part by Award No. KUS-l1-004021, made by King Abdullah University of Science and Technology (KAUST) and by NIST Grant 60NANB10D014. Also, thanks to Dr. L.B. Skinner, Dr. C. Erdonmez, Dr. B. Ercan, Dr. S. Soyer-Uzun and Dr. C. White for their valuable discussions during the production of this paper.
    Publisher
    Elsevier BV
    Journal
    Cement and Concrete Research
    DOI
    10.1016/j.cemconres.2011.03.027
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.cemconres.2011.03.027
    Scopus Count
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