CEB-FIP Model Calculator for Concrete Properties
⚠️ Important Disclaimer
This calculator implements the CEB-FIP Model Code and Eurocode 2 (EC2) formulations for concrete material properties. The calculations provide estimates based on characteristic compressive strength and aggregate properties.
Based on: CEB-FIP Model Code 2010 and Eurocode 2 (EN 1992-1-1) specifications for concrete material characterization.
Note: Results should be validated against experimental data for critical applications.
CEB-FIP Model Code Formulations (Updated)
Key formulations implemented: 5.1.4 Compressive strength: fcm = fck + Δf, fbc = 1.16×fck (corrected)5.1.5.1 Tensile strength: fctm = 0.3(fck )2/3 (fck ≤ 50 MPa)5.1.5.2 Fracture energy: Gf0 = 0.025 + 5.31×10-4 ×dmax (corrected)5.1.7.2 Modulus of elasticity: Eci = Ec0 αE ((fck +Δf)/fcm0 )1/3 5.1.8 Stress-strain relations: εc1 = -0.7×fcm 0.31 /1000 (corrected)Biaxial strength envelope: Four-quadrant failure criterion with CEB-FIP equationsAutomatic Δf calculation: Based on production control quality (good/normal/poor)
🔧 Units Settings
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Pressure/Stress Units:
Megapascal (MPa)
Pascal (Pa)
Kilopascal (kPa)
Gigapascal (GPa)
Pounds per square inch (psi)
Length Units:
Millimeter (mm)
Meter (m)
Centimeter (cm)
Inch (in)
Density Units:
kg/m³
g/cm³
lb/ft³
Elastic Characteristics
Initial Elastic Modulus, Eci
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MPa
Reduced Elastic Modulus, Ec
-
MPa
Secant Modulus, Ec1
-
MPa
Strength
Mean Compressive Strength, fcm
-
MPa
Biaxial Compression Strength, fbc
-
MPa
Mean Tensile Strength, fctm
-
MPa
Characteristic Tensile Strength (min), fctk,min
-
MPa
Characteristic Tensile Strength (max), fctk,max
-
MPa
Fracture Energy
Fracture Energy, Gf
-
N·mm/mm²
Tensile Fracture Energy, Gft
-
N·mm/mm²
Compressive Fracture Energy, Gfc
-
N·mm/mm²
Crack Opening
Crack Opening at Peak, w1
-
mm
Complete Crack Opening, wc
-
mm
Strain at Peak Compression, εc1
-
-
Production Control Quality
-
-
Standard Deviation, σ
-
MPa
Mean-Characteristic Difference, Δf
-
MPa