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Characterization of Micro-Pore Structure in Novel Cement Matrices

Published online by Cambridge University Press:  14 October 2014

Seyoon Yoon ,
Isabel Galan ,
Kemal Celik ,
Fredrik P. Glasser  and
Mohammed S. Imbabi
Seyoon Yoon
Affiliation:
School of Engineering, Fraser Noble Building, University of Aberdeen, AB24 3UE, UK.
Isabel Galan
Affiliation:
Department of Chemistry, Meston Building, University of Aberdeen, AB24 3UE, UK.
Kemal Celik
Affiliation:
Department of Civil and Environmental Engineering, University of California, Berkeley, CA 94720, USA
Fredrik P. Glasser
Affiliation:
Department of Chemistry, Meston Building, University of Aberdeen, AB24 3UE, UK.
Mohammed S. Imbabi
Affiliation:
School of Engineering, Fraser Noble Building, University of Aberdeen, AB24 3UE, UK.
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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.

Keywords

porosimetryceramicx-ray tomography
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1712: Symposium ZZ/AAA/BBB – Recent Advances in the Structural Characterization of Materials , 2014 , mrss14-1712-aaa11-01
Copyright
Copyright © Materials Research Society 2014 

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References

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