Calorimetric study of reactions in the system C4A3 - CH - C - H

Thermodynamics of calcium silicate hydrates, development of a database to model concrete dissolution at 25°C using the EQ3/6 geochemical modeling code

“…The original ∆H of formation (20°C) from CaO, and silica-gel thermodynamic data for all Ca 2 SiO 4 phases, are evaluated by Haas et al (1981). Qualitative rate information has been obtained for ettringite components (Majling et al, 1985). Other than an enthalpy of dehydration (Maycock et al, 1974) and C p data (Ederova and Satava, 1979) obtained over the range of 273 to 333ÊK, thermochemical data for ettringite are calculated (Sarker et al, 1982;Babushkin et al, 1985).…”

Near-field/altered-zone models report

“…The enthalpies of formation (20°C) for CaO and silica gel and thermodynamic data for all Ca 2 SiO 4 phases were evaluated by Haas et al (1981). Qualitative rate information has been obtained for ettringite components (Majling et al, 1985). Other than an enthalpy of dehydration (Maycock et al, 1974) and C p data (Ederova and Satava, 1979) obtained over the range of 273 to 333°K, thermochemical data for ettringite for ettringite are calculated (Babushkin et al, 1985;Sarker et al, 1982).…”

Engineered materials characterization report, volume 3 - corrosion data and modeling update for viability assessments

“…The original AH of formation (20°C) from CaO and silica-gel thermodynamic data for all Ca$iO, phases are evaluated by Haas et al (1981). Qualitative rate information has been obtained for ettringite components (Majling et al, 1985) Except for an enthalpy of dehydration (Maycock et al, 1974) and heat-capacity data (Ederova and Satava, 1979) obtained over the range of 273 to 333 K, thermochemical data for ettringite are calculated (Sarker et al, 1982;Babushkin et al, 1985). The only experimental data for monosulfate (C,ASH,, or APm) located so far date is heat-capacity data from 273 to 353 K (Ederova and Satava, 1979).…”