## Function

- Define the time-dependent creep and shrinkage material data for concrete. The properties are applied to Construction stage analysis and Heat of hydration analysis.

## Call

From the main menu, select **[Properties] tab > [Material Properties] group > [Time Dependent] > ****[Creep/Shrinkage]**

## Input

Fig. Time-Dependent Material(Creep, Shrinkage) dialog box

### Name

The material name is entered and referenced from the "Time-Dependent Material Link".

### Code

Select the code to define the characteristics of the material for Creep/Shrinkage.

**When CEB-FIP(2010) is selected**

**Characteristic Compressive strength of concrete at the age of 28 days**

**Relative Humidity of ambient environment (40-99)**

**Notional size of member**

Note

1. In case the Notional Size of Member (h) for each element is different due to a changing section, 'h' for each element needs to be entered in the Change Element Dependent Material Property.

2. In case the Composite Section for Construction Stage is used, 'h' for each Part needs to be entered in the Composite Section for Construction Stage.

**Type of Cement**

**Age of concrete at the beginning of shrinkage:** The number of days elapsed after pouring of concrete, when the shrinkage is assumed to start.

**Type of aggregate**

**Creep Calculation Process**

**Shrinkage Calculation Process**

**Show Result...:** Produce the auto-calculated time-dependent material property in a graph.

**When CEB-FIP(1990) is selected**

**Characteristic Compressive strength of concrete at the age of 28 days**

**Relative Humidity of ambient environment (40-99)**

**Notional size of member**

Note

1. In case the Notional Size of Member (h) for each element is different due to a changing section, 'h' for each element needs to be entered in the Change Element Dependent Material Property.

2. In case the Composite Section for Construction Stage is used, 'h' for each Part needs to be entered in Composite Section for Construction Stage.

**Type of Cement**

**Age of concrete at the beginning of shrinkage:** The number of days elapsed after pouring of concrete, when the shrinkage is assumed to start.

**Show Result…:** Produce the auto-calculated time-dependent material property in a graph.

**When CEB-FIP(1978) is selected**

**Characteristic Compressive strength of concrete at the age of 28 days**

**Relative Humidity of ambient environment (40 - 100) **

**Notional size of member**

Note

1. In case the Notional Size of Member (h) for each element is different due to a changing section, 'h' for each element needs to be entered in the Change Element Dependent Material Property.

2. In case the Composite Section for Construction Stage is used, 'h' for each Part needs to be entered in the Composite Section for Construction Stage.

**Type of Cement**

**Age of concrete at the beginning of shrinkage:** The number of days elapsed after pouring of concrete, when the shrinkage is assumed to start.

**Show Result…:** Produce the auto-calculated time-dependent material property in a graph.

**When ACI209(1982) Code is selected**

**Compressive strength of concrete at the age of 28 days**

**Relative Humidity of ambient environment (40-99)**

**Volume-surface ratio:** The volume-surface ratio of the structure

**Age of concrete at the beginning of shrinkage:** The number of days elapsed after pouring of concrete, when the shrinkage is assumed to start.

**Init Curing Method:** The initial curing method

**When PCA(1986) is selected**

**Compressive strength of concrete at the age of 28 days**

**Ultimate shrinkage strain (500~800)**

**Ultimate creep strain (3~5)**

**Relative Humidity of ambient environment (40-99)**

**Volume-surface ratio:** The volume-surface ratio of the structure

**Reinforcement ratio of cross-section of column segment**

**Modulus of elasticity of steel**

**Show Result…:** Produce the auto-calculated time-dependent material property in a graph.

**When Combined (ACI209(1982) & PCA(1986)) is selected**

**Compressive strength of concrete at the age of 28 days**

**Relative Humidity of ambient environment (40-100)**

**Volume-surface ratio: The volume-surface ratio of the structure**

**Creep**

Material factored ultimate creep strain: Ultimate creep strain considering concrete properties.

Volume-surface Ratio: Equation for Volume-surface Ratio

Loading aged factored (t : loading age): Equation for loading age coefficient

**Shrinkage**

Material factored ultimate shrinkage strain: Ultimate shrinkage strain considering concrete properties.

Volume-surface Ratio: Equation for Volume-surface Ratio

Progress of shrinkage with Time

**Reinforced concrete effect by PCA**

Reinforcement ratio of cross-section of column segment

Modulus of elasticity of Steel

**Show Result…:** Produce the auto-calculated time-dependent material property in a graph.

**When AASHTO (2006) is selected**

**Compressive strength of concrete at the age of 28 days**

**Relative Humidity of ambient environment (40-99)**

**Volume-surface ratio:** The volume-surface ratio of the structure

**Age of concrete at the beginning of shrinkage:** The number of days elapsed after pouring of concrete, when the shrinkage is assumed to start.

**Expose to drying before 5 Days of curing:** If this option is checked on, the influence of Creep & Shrinkage is increased by 20% (ref. AASHTO 5.4.2.3. Shrinkage and Creep).

**Show Result…:** Produce the auto-calculated time-dependent material property in a graph.

**When INDIA (IRC:18-2000) is selected**

**Compressive strength of concrete at the age of 28 days**

**Relative Humidity of ambient environment (40-99)**

**Notational size of member**

Note

1. In case the Notational Size of Member (h) for each element is different due to a changing section, 'h' for each element needs to be entered in the Change Element Dependent Material Property.

2. In case the Composite Section for Construction Stage is used, 'h' for each Part needs to be entered in the Composite Section for Construction Stage.

**Age of concrete at the beginning of shrinkage:** The number of days elapsed after pouring of concrete, when the shrinkage is assumed to start.

**Show Result…:** Produce the auto-calculated time-dependent material property in a graph.

**When European is selected**

**Characteristic compressive cylinder strength of concrete at the age of 28 days (fck)**

**Relative Humidity of ambient environment (40-99)**

**Notational size of member**

Note

1. In case the Notational Size of Member (h) for each element is different due to a changing section, 'h' for each element needs to be entered in the Change Element Dependent Material Property.

**Type of Cement**

**Type of Code**

**Age of concrete at the beginning of shrinkage:** The number of days elapsed after pouring of concrete, when the shrinkage is assumed to start.

**Show Result…:** Produce the auto-calculated time-dependent material property in a graph.

**When AS 3600-2009 is selected**

**Compressive strength of concrete at the age of 28 days**

**Exposure Environment**

Arid

Interior

Temperate Inland

Tropical or Near Coastal

**Hypothetical Thickness**

Note

1. In case the Hypothetical Thickness of Member (h) for each element is different due to a changing section, 'h' for each element needs to be entered in the Change Element Dependent Material Property.

**Drying Basic Shrinkage Strain**

**Age of concrete at the beginning of shrinkage:** The number of days elapsed after pouring of concrete, when the shrinkage is assumed to start.

**Show Result…:** Produce the auto-calculated time-dependent material property in a graph.

**When AS/RTA 5100.5-2011 & 2016 & 2017 is selected**

**Compressive strength of concrete at the age of 28 days**

**Exposure Environment**

Arid

Interior

Temperate Inland

Tropical or Near Coastal

**Hypothetical Thickness**

Note

1. In case the Hypothetical Thickness of Member (h) for each element is different due to a changing section, 'h' for each element needs to be entered in the Change Element Dependent Material Property.

**Drying Basic Shrinkage Strain**

**Age of concrete at the beginning of shrinkage:** The number of days elapsed after pouring of concrete, when the shrinkage is assumed to start.

**Show Result…:** Produce the auto-calculated time-dependent material property in a graph.

**When NZ Bridge(SP/M/022) is selected**

**Compressive strength of concrete at the age of 28 days**

**Exposure Environment**

Arid

Interior

Temperate Inland

Tropical or Near Coastal

**Relative Humidity Factor for Shrinkage (0.20~0.72)**

**Hypothetical Thickness**

Note

1. In case the Hypothetical Thickness of Member (h) for each element is different due to a changing section, 'h' for each element needs to be entered in the Change Element Dependent Material Property.

**Drying Basic Shrinkage Strain(10^6) (570-~1500)**

**Age of concrete at the beginning of shrinkage:** The number of days elapsed after pouring of concrete, when the shrinkage is assumed to start.

**Show Result…:** Produce the auto-calculated time-dependent material property in a graph.

**When User Defined is selected**

**Creep Function:** Select Creep Function. To add or modify Creep Functions to and from the list, click the… button to prompt the dialog box, "Time Dependent Material (Creep/Shrinkage) Function".

**Loading Age:** Assign the age (time) at which the members become subjected to loads (for instance, the number of days after which the formwork and/or shoring is removed after the concrete pour in the case of self-weights)

**Add Creep Function:** Add the defined Creep Function to the list in conjunction with Loading Age.

**Modify:** Modify Loading Age pertaining to the registered Creep Function.

**Delete:** Delete the registered Creep Function together with Loading Age.

**Shrinkage Strain Function:** Select Shrinkage Function to apply. Click the… button to prompt "Time Dependent Material (Creep/Shrinkage) Function" dialog box to add or delete Shrinkage Function.

### Add

You are defining new material data.

### Modify

You can review or modify the entered information.

### Delete

You can delete the entered material data.