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THERMO-ELASTIC PROPERTY OF Ca(OH) 2 PORTLANDITE.
- Source :
- High Pressure Research; Mar-Jun2003, Vol. 23 Issue 1/2, p55, 7p
- Publication Year :
- 2003
-
Abstract
- An equation of state (EoS) for Ca(OH) 2 portlandite has been obtained through measurements of pressure and temperature dependence of volume by means of in-situ X-ray observation. The bulk modulus and its pressure derivative at zero pressure calculated using third-order Birch-Murnaghan's equation of state is 33.1 GPa and 4.2 at 300 K, respectively. The unit cell parameters and the volumes have been also determined at 573 K and 673 K. Temperature derivatives of the bulk modulus and its pressure derivative have been calculated to be -0.022 GPa/K and 0.0072 K -1 , respectively. Thermal expansion coefficient of portlandite has been calculated from the EoS. The pressure dependence of entropy has been obtained from the present thermo-elastic parameters. [ABSTRACT FROM AUTHOR]
- Subjects :
- EQUATIONS of state
CALCIUM compounds
HIGH pressure (Science)
Subjects
Details
- Language :
- English
- ISSN :
- 08957959
- Volume :
- 23
- Issue :
- 1/2
- Database :
- Complementary Index
- Journal :
- High Pressure Research
- Publication Type :
- Academic Journal
- Accession number :
- 10726575
- Full Text :
- https://doi.org/10.1080/0895795031000109670