High pressure study of low compressibility tetracalcium aluminum carbonate hydrates 3CaO{center_dot}Al{sub 2}O{sub 3}{center_dot}CaCO{sub 3}{center_dot}11H{sub 2}O
Journal Article
·
· Cement and Concrete Research
- Department of Civil and Environmental Engineering, University of California, Berkeley, CA 94720 (United States)
- School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan Metropolitan City, 689-798 (Korea, Republic of)
- Department of Chemistry, Meston Building, University of Aberdeen, Aberdeen, AB24 3UE Scotland (United Kingdom)
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 20015 (United States)
Synchrotron X-ray diffraction data was collected from a sample of monocarboaluminate 3CaO{center_dot}Al{sub 2}O{sub 3}{center_dot}CaCO{sub 3}{center_dot}11H{sub 2}O from ambient pressure to 4.3 GPa. The refined crystal structure at ambient pressure is triclinic with parameters a = 5.77(2) A, b = 8.47(5) A, c = 9.93(4) A, {alpha} = 64.6(2) Degree-Sign , {beta} = 82.8(3) Degree-Sign , {gamma} = 81.4(4) Degree-Sign , and space group of P1 or P1{sup Macron }. 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.
- OSTI ID:
- 21596950
- Journal Information:
- Cement and Concrete Research, Journal Name: Cement and Concrete Research Journal Issue: 1 Vol. 42; ISSN 0008-8846; ISSN CCNRAI
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BREMSSTRAHLUNG
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
COHERENT SCATTERING
COMPRESSIBILITY
CRYSTAL STRUCTURE
DEHYDRATION
DIFFRACTION
ELECTROMAGNETIC RADIATION
EQUATIONS
EQUATIONS OF STATE
HYDRATES
MECHANICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PRESSURE RANGE
PRESSURE RANGE GIGA PA
RADIATIONS
SCATTERING
SPACE GROUPS
SYMMETRY GROUPS
SYNCHROTRON RADIATION
X-RAY DIFFRACTION
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BREMSSTRAHLUNG
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
COHERENT SCATTERING
COMPRESSIBILITY
CRYSTAL STRUCTURE
DEHYDRATION
DIFFRACTION
ELECTROMAGNETIC RADIATION
EQUATIONS
EQUATIONS OF STATE
HYDRATES
MECHANICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PRESSURE RANGE
PRESSURE RANGE GIGA PA
RADIATIONS
SCATTERING
SPACE GROUPS
SYMMETRY GROUPS
SYNCHROTRON RADIATION
X-RAY DIFFRACTION