TY - JOUR
T1 - High pressure study of low compressibility tetracalcium aluminum carbonate hydrates 3CaO center dot Al2O3 center dot CaCO3 center dot 11H(2)O
AU - Moon, Juhyuk
AU - Oh, Jae Eun
AU - Balonis, Magdalena
AU - Glasser, Fredrik P.
AU - Clark, Simon M.
AU - Monteiro, Paulo J.M.
PY - 2012/1
Y1 - 2012/1
N2 - Synchrotron X-ray diffraction data was collected from a sample of monocarboaluminate 3CaO•Al2O3•CaCO 3•11H2O from ambient pressure to 4.3 GPa. The refined crystal structure at ambient pressure is triclinic with parameters a = 5.77(2) Å, b = 8.47(5) Å, c = 9.93(4) Å, α = 64.6(2)°, β = 82.8(3)°, γ = 81.4(4)°, and space group of P1 or P1̄. 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.
AB - Synchrotron X-ray diffraction data was collected from a sample of monocarboaluminate 3CaO•Al2O3•CaCO 3•11H2O from ambient pressure to 4.3 GPa. The refined crystal structure at ambient pressure is triclinic with parameters a = 5.77(2) Å, b = 8.47(5) Å, c = 9.93(4) Å, α = 64.6(2)°, β = 82.8(3)°, γ = 81.4(4)°, and space group of P1 or P1̄. 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.
UR - http://www.scopus.com/inward/record.url?scp=80855132747&partnerID=8YFLogxK
U2 - 10.1016/j.cemconres.2011.08.004
DO - 10.1016/j.cemconres.2011.08.004
M3 - Article
AN - SCOPUS:80855132747
SN - 0008-8846
VL - 42
SP - 105
EP - 110
JO - Cement and Concrete Research
JF - Cement and Concrete Research
IS - 1
ER -