Characterization of micro-pore structure in novel cement matrices

Seyoon Yoon, Isabel Galan, Kemal Celik, Fredrik P. Glasser, Mohammed S. Imbabi

    Research output: Contribution to journalConference article

    Abstract

    Calcium sulfoaluminate (CSA) cements are being developed using a novel processing method having as its objective lowering specific CO2 emissions by ∼50% relative to a Portland cement benchmark. We need to be able to measure the properties of the products. Porosity and permeability measurements help define the engineering properties but their quantification is influenced by the choice of experimental protocols. In the present study we used ordinary Portland cement (PC) paste as a benchmark and hydrated ye'elimite, which is a main component of CSA cements, to understand its pore structure. We report on the use of synchrotron-sourced radiation for μCT (Computerized Tomography) and 3D image re-construction of the internal micro-pore structure of PC and ye'elimite-gypsum pastes. As a comparison, porosity and permeability measurements were traditionally obtained using Mercury Intrusion Porosimetry (MIP). The Mori-Tanaka method and the polynomial statistical model were used to analyze the effects of different 3-D micro-pore structures on mechanical properties. The results show that e micro-pore structures differ considerably between PC and ye'elimite pastes and their bulk modulus is significantly affected by the shapes of their micro-pore structures.

    Original languageEnglish (US)
    Article number908
    JournalMaterials Research Society Symposium Proceedings
    Volume1712
    DOIs
    StatePublished - Jan 1 2014
    Event2014 MRS Spring Meeting - San Francisco, United States
    Duration: Apr 21 2014Apr 25 2014

    Fingerprint

    cements
    Pore structure
    Portland cement
    Cements
    Permethrin
    porosity
    Ointments
    matrices
    Calcium
    Porosity
    Calcium Sulfate
    calcium
    permeability
    Computerized tomography
    Gypsum
    Synchrotron radiation
    Image reconstruction
    Mercury
    gypsum
    Elastic moduli

    Keywords

    • ceramic
    • porosimetry
    • x-ray tomography

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

    Cite this

    Characterization of micro-pore structure in novel cement matrices. / Yoon, Seyoon; Galan, Isabel; Celik, Kemal; Glasser, Fredrik P.; Imbabi, Mohammed S.

    In: Materials Research Society Symposium Proceedings, Vol. 1712, 908, 01.01.2014.

    Research output: Contribution to journalConference article

    Yoon, Seyoon ; Galan, Isabel ; Celik, Kemal ; Glasser, Fredrik P. ; Imbabi, Mohammed S. / Characterization of micro-pore structure in novel cement matrices. In: Materials Research Society Symposium Proceedings. 2014 ; Vol. 1712.
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