THE MECHANICAL INFLUENCE OF CARBON UPTAKE IN AFM PHASES: EXPERIMENTAL AND THEORETICAL STUDIES
Abstract eng: Elastic properties of carbon-incorporated AFm (Al2O3-Fe2O3-mono) phases are experimentally and theoretically calculated. From high-pressure x-ray diffraction, the bulk modulus of monocarboaluminate was measured as 53 GPa, which is larger than any other reported bulk moduli of hydrated phases in concrete system. In addition, first-principles calculation confirmed the experiment and predicted additional elastic properties of fully and partially hydrated monocarboaluminates. The atomistic simulation implies that the additions of carbonate group and water molecules significantly attenuate anisotropic nature of calcium aluminate framework. Thus it considerably makes the crystal structure incompressible and thermodynamically stable.
Contributors:
Publisher:
Japan Concrete Institute, Tokyo
Conference Title:
Conference Title:
First International Conference on Concrete Sustainability
Conference Venue:
Tokyo (JP)
Conference Dates:
2013-05-27 / 2013-05-29
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
Record appears in:
Record created 2014-10-29, last modified 2014-11-18
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