Monosulfoaluminate

Formula : Ca4Al2SO10:12H2O

Family: 
LDH
High temperature: 
Stable at room temperature.
Geological context: 
Artificial mineral found in the concrete

Dernière mise à jour le 25.01.2021

THERMODYNAMICS

Individual properties (298.15 K)
M
g·mol-1
 V°
cm3·mol-1
 ΔGºf
J·mol-1
 ΔHºf
J·mol-1
 Sº
J·mol-1·k-1
 CP
J·mol-1·K-1
622.518 311.260 (Ref.: 97tay) Taylor H.F.W. , 1997 Cement Chemistry, 2nd. Ed., Thomas Telford, London. -7781948 (Ref.: 10bbla/bou) Blanc, Ph.; Bourbon, X.; Lassin, A.; Gaucher, E.C. 2010 - Chemical model for cement-based materials: Thermodynamic data assessment for phases other than C-S-H. Cement and Concrete Research, 40, p. 1360-1374. -8763677 (Ref.: 10bbla/bou) Blanc, Ph.; Bourbon, X.; Lassin, A.; Gaucher, E.C. 2010 - Chemical model for cement-based materials: Thermodynamic data assessment for phases other than C-S-H. Cement and Concrete Research, 40, p. 1360-1374. 787.111 (Ref.: Internal calculation) 942.42 (Ref.: 79ede/sat) Ederova, J., and Satava, V., 1979, Heat capacities of C3AH6, C4ASH12 and C6AS3H32: Thermochimica Acta, v. 31, p. 126-128
CP(T) = a + b·T + ·c·T-2 (T in Kelvin)
a
J·mol-1·K-1
 b * 103
J·mol-1·K-2
 c * 10-5
J·K·mol-1
 Maier Kelley Ref.
594.18 1168.00 0.00 (Ref.: 79ede/sat) Ederova, J., and Satava, V., 1979, Heat capacities of C3AH6, C4ASH12 and C6AS3H32: Thermochimica Acta, v. 31, p. 126-128
Reaction properties

Monosulfoaluminate + 12H+ ⇌ 2Al+3 + 4Ca+2 + SO4-2 + 18H2O

298.15 K, 1 bar log10K: 73.09 ΔH°r:-539403 J·mol-1 (Ref.: 10bbla/bou) Blanc, Ph.; Bourbon, X.; Lassin, A.; Gaucher, E.C. 2010 - Chemical model for cement-based materials: Thermodynamic data assessment for phases other than C-S-H. Cement and Concrete Research, 40, p. 1360-1374.
T(°C) 0 25 60 100 150 200 250 300
log10K 81.68 73.09 63.11 53.88 44.51 36.66 29.62 22.78
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-3542.633353 -0.570544 213511.442410 1287.525415 -10328467.628296