Heat of Hydration Model

Cement Chemistry

Phase Calculation Method:

CaO (%) SiO₂ (%) Fe₂O₃ (%) Al₂O₃ (%)

SO₃ (%) MgO (%) Free CaO (%)

Binder Fractions & W/CM Ratio

Cement (%) Slag (%) Fly Ash (%) Water/Cementitious Ratio

Physical Properties & Environment Settings

Blaine (Cement) Blaine (Slag) Blaine (Fly Ash) Activation Energy, Ea (J/mol) Reference Temp (°C) Initial Temp (°C) Total Time (hours) DELTA Step (hours) Model H_u: Slag (J/g) Model H_u: Fly Ash (J/g) Model Delay Time (hrs)

Slag Isothermal Fit (9-Parameter Gaussian)

Manually input known parameters, or paste limewater test data and use the auto-fitter.

a1 (Amplitude) b1 (Center) c1 (Width) a2 (Amplitude) b2 (Center) c2 (Width) a3 (Amplitude) b3 (Center) c3 (Width)

Paste Isothermal Data (X: Acc. Heat [J/g], Y: Heat Rate [J/g/h])

Ready

Graph X-Axis:

Raw Data Matrix

Real Time (hrs)	Eq. Time (hrs)	Cumulative Heat (J/g)

Hydration Curve Fitting (Schindler & Folliard Model)

Calculates H_u and fits the 6-parameter Degree of Hydration exponential functions.

Data Source to Fit Fit Start Eq. Age (hrs) Fit End Eq. Age (hrs)

Calc. C3S (%) Calc. C2S (%) Calc. C3A (%) Calc. C4AF (%)

S&F Slag H_u (J/g) Fly Ash CaO (%) Total Ult. Heat, H_u (J/g)

Total α_u (α_u_T) α_u1 τ_1 β_1

α_u2 (SCM Term) τ_2 (SCM Term) β_2 (SCM Term)