Predict concrete strength development over time using ACI 209, CEB-FIP, and maturity methods. Optimize formwork removal, post-tensioning, and opening to traffic.
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Strength Development Predictor
Model compressive strength growth from 1 day to 365+ days. Compare prediction methods and plan construction schedule.
🔧 Mix Parameters
MPa
%
—
°C
🏗️
1 Day
--
📅
3 Days
--
📅
7 Days
--
✅
28 Days
--
📅
56 Days
--
📅
90 Days
--
📊 Strength Development Curve
Age
Strength (MPa)
% of f'c
Milestone
📈
Configure Mix & Predict
Enter parameters in sidebar and click Predict to generate strength curve.
🌡️ Maturity Setup
°C
J/mol
°C
°C-hrs
🌡️ Temperature History & Maturity Accumulation
🌡️
Current Maturity
-- °C-hrs
⏱️
Time to Target
-- hrs
🌡️
Est. Strength
-- MPa
ACI 209R-92
f(t) = f₂₈ × (t / (α + βt)) where α, β depend on cement type. Most widely used in North America. Good for moist-cured standard concrete.
CEB-FIP Model Code 2010
f(t) = f₂₈ × exp(s × (1 - √(28/t))). s = coefficient (0.20-0.38) based on cement class. European standard, more accurate for SCMs.
GL2000
Global model calibrated on worldwide database. f(t) = f₂₈ × (t / (a + bt)). Accounts for w/c, cement type, SCM, curing. Most comprehensive.
BS 8500 / EN 206
Uses strength classes (C20/25, C30/37, etc.). 2-day, 7-day, 28-day relationships per cement strength class (32.5R, 42.5R, 52.5R).
ECP 203 (Egypt)
Egyptian code annex. Similar to ACI 209 but calibrated for local cements (CEM I 42.5N, CEM II/B-M) and hot climate curing.
Maturity Method (ASTM C1074)
Nurse-Saul: M = Σ(T - T₀)Δt. Arrhenius: tₑ = Σexp(-E/R(1/T - 1/Tᵣ))Δt. Requires calibration curves for each mix.