Material properties for concrete¶

The following functions are related to calculation of material properties of concrete.

Strength¶

structuralcodes.codes.ec2_2004.fcd(fck: float, alpha_cc: float, gamma_c: float) → float[source]¶

The design compressive strength of concrete.

EN 1992-1-1:2004, Eq. (3.15)

Parameters:

fck (float) – The characteristic compressive strength in MPa.
alpha_cc (float) – A factor for considering long-term effects on the strength, and effects that arise from the way the load is applied.
gamma_c (float) – The partial factor of concrete.

Returns:

The design compressive strength of concrete in MPa

Return type:

float

structuralcodes.codes.ec2_2004.fcm(fck: float, delta_f: float = 8) → float[source]¶

The mean compressive strength of concrete.

EN 1992-1-1:2004, Table 3.1.

Parameters:: fck (float) – The characteristic compressive strength of concrete in MPa.
Keyword Arguments:: delta_f (float) – The difference between the mean and the characteristic strength.
Returns:: The mean compressive strength in MPa.
Return type:: float

structuralcodes.codes.ec2_2004.fctm(fck: float) → float[source]¶

The mean tensile strength of concrete.

EN 1992-1-1: 2004, Table 3.1.

Parameters:: fck (float) – The characteristic compressive strength of concrete in MPa.
Returns:: The mean tensile strength in MPa.
Return type:: float

structuralcodes.codes.ec2_2004.fctk_5(fctm: float) → float[source]¶

The 5% fractile of the tensile strength of concrete.

EN 1992-1-1: 2004, Table 3.1.

Parameters:: fctm (float) – The mean tensile strength of concrete in MPa.
Returns:: The 5% fractile of the tensile strength in MPa.
Return type:: float

structuralcodes.codes.ec2_2004.fctk_95(fctm: float) → float[source]¶

The 95% fractile of the tensile strength of concrete.

EN 1992-1-1: 2004, Table 3.1.

Parameters:: fctm (float) – The mean tensile strength of concrete in MPa.
Returns:: The 95% fractile of the tensile strength in MPa.
Return type:: float

Stiffness¶

structuralcodes.codes.ec2_2004.Ecm(fcm: float) → float[source]¶

The secant modulus of concrete.

EN 1992-1-1:2004, Table 3.1.

Parameters:: fcm (float) – The mean compressive strength of concrete in MPa.
Returns:: The secant modulus of concrete in MPa.
Return type:: float

Parameters of constitutive relations¶

structuralcodes.codes.ec2_2004.eps_c1(fcm: float) → float[source]¶

The strain at maximum compressive stress of concrete (fcm) for the Sargin constitutive law.

EN 1992-1-1:2004, Table 3.1.

Parameters:: fcm (float) – The mean compressive strength of concrete in MPa.
Returns:: The strain at maximum compressive stress, absolute value, no unit.
Return type:: float

structuralcodes.codes.ec2_2004.eps_cu1(fck: float) → float[source]¶

The ultimate strain for the Sargin constitutive law.

EN 1992-1-1:2004, Table 3.1.

Parameters:: fck (float) – The characteristic compressive strength of concrete in MPa.
Returns:: The ultimate strain, absolute value, no unit.
Return type:: float

structuralcodes.codes.ec2_2004.eps_c2(fck: float) → float[source]¶

The strain at maximum compressive stress of concrete for the parabolic-rectangular law.

EN 1992-1-1:2004, Table 3.1.

Parameters:: fck (float) – The characteristic compressive strength of concrete in MPa.
Returns:: The strain at maximum compressive stress, absolute value, no unit.
Return type:: float

structuralcodes.codes.ec2_2004.eps_cu2(fck: float) → float[source]¶

The ultimate strain of the parabolic-rectangular law.

EN 1992-1-1:2004, Table 3.1.

Parameters:: fck (float) – The characteristic compressive strength of concrete in MPa.
Returns:: The ultimate strain, absolute value, no unit.
Return type:: float

structuralcodes.codes.ec2_2004.eps_c3(fck: float) → float[source]¶

The strain at maximum compressive stress of the bi-linear law.

EN 1992-1-1:2004, Table 3.1.

Parameters:: fck (float) – The characteristic compressive strength of concrete in MPa.
Returns:: The strain at maximum compressive stress, absolute value, no unit.
Return type:: float

structuralcodes.codes.ec2_2004.eps_cu3(fck: float) → float[source]¶

The ultimate strain of the bi-linear law.

EN 1992-1-1:2004, Table 3.1.

Parameters:: fck (float) – The characteristic compressive strength of concrete in MPa.
Returns:: The ultimate strain, absolute value, no unit.
Return type:: float

structuralcodes.codes.ec2_2004.n_parabolic_rectangular(fck: float) → float[source]¶

The exponent in the parabolic-rectangular law.

EN 1992-1-1:2004, Table 3.1.

Parameters:: fck (float) – The characteristic compressive strength of concrete in MPa.
Returns:: The exponent n, absolute value, no unit.
Return type:: float