Time Dependent Material (Comp. Strength) 


Define Compressive Strength of concrete or the change of modulus of elasticity to reflect the variation of modulus of elasticity with time. The concrete age of each member is measured from the time the concrete is cast, and each member will have an appropriate compressive strength and modulus of elasticity at each construction stage. If concrete is poured into different parts of a composite section in stages, the difference in compressive strength and modulus of elasticity of each part, due to the difference in concrete age of each part, can be considered. To reflect the change in compressive strength of concrete or the change in modulus of elasticity, "Variation of Comp. Strength" option should be checked in Construction Stage Analysis Control Data. 



From the Main Menu select Properties > Time Dependent > Comp. Strength. 


Click to define a new time variant modulus of elasticity (Comp. strength). Click and to change and delete the data previously entered. Click to copy previously entered data.
NameEnter the name of function defining the time variant modulus of elasticity (Comp. strength) of concrete.
TypeSelect Code to define the time dependent compressive strength of concrete, or directly specify the numerical values defining the function.
Development of StrengthWhen Code is selected in Type, the change of modulus of elasticity is defined by the change of compressive strength. Code Where CEBFIP(2010) is selected Where CEBFIP(1990) is selected Where INDIA(IRC:182000) is selected Where CEBFIP(1978) is selected Specify the Concrete Compressive Strength at 28 Days (fck) and Cement Type (s).
Where AS 36002009 is selected Where AS/RTA 5100.52011 is selected
Where User is selected, enter the modulus of elasticity varying with time under Time and Elasticity in the table. : Produce a graph based on the entered data. Note 1 Note 2 Scale FactorEnter a multiplier to apply to the values for modulus of elasticity if User Type is assigned. Graph OptionsCheck on for Log Scale graph. Graph TypeThe Yaxis of the graph can represent compressive strength, tensile strength or modulus of elasticity. 
