# Modulus Of Elasticity Of Concrete

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The modulus of elasticity of concrete E c adopted in modified form by the ACI Code can be calculated by the formula given below:

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Comments
• Cesar Alvarado May 7, 2008 at 11:42 pm

How can i calculate the modulus of elasticity of concrete that it is not 28-day yet?

• kalpesh B November 12, 2010 at 12:30 am

Hey hi… u can calculate it even after 7 dayz curing assuming dat concrete gain its 60% of strength in 7days..

• Soon Yiyi December 3, 2008 at 4:13 am

In what circumstances that a back calculation need to be carried out to determine the Modulus of
Elasticity of the concrete?

• Ryan December 24, 2008 at 4:47 pm

In the case where you are checking the probable deformation of concrete. For eg, if you remove the formwork for a structural slab before 28 days, you might need to verify the permanent deformation that occurs. As you know, E plays a big role in the determination of delta.

• lee February 2, 2009 at 12:44 pm

how can i calculate the elasticity for concrete, steel, wood, plz tell me by the above mentioned email add.
thanks

• Tom Tu May 28, 2009 at 3:09 pm

Can the loads be applied to a mat foundation as soon as
the concrete has reached the required strength?
For example, a 30″ thick mat foundation with a column
load of 600 kips.

• Francisco Chávez June 5, 2009 at 1:35 am

The modulus of elasticity of concrete at younger ages 28dias can be obtained by knowing the maturity curve that describes it.

Knowing the slope of the maturity of the concrete, it is possible to obtain the resistance of the same feature (fc) for times smaller or larger than 28días.

Then apply the same formula set forth in this site .. but now calculated using the fc curve maturation.

Greetings.

Sincerely,
Francisco Chavez Contreras
Civil Engineering Student, University of Santiago de Chile

• naru August 11, 2009 at 11:22 am

According to ASTM C469, why do we used the value of stress at 40% of ultimate load for calculating the modulus of elasticity?

• Halim Kerim Ba? September 8, 2009 at 7:09 am

Because as you know the material concrete has no linear stress strain diagram. Therefore I guess the ASTM has chosen the slope of that curve at 40% to be the best fitting slope since the slope is changing though all different strains and loads.

• Bikshapathi Dumpa January 18, 2010 at 4:54 am

Hi sir i was looking for (calculation formula) of Static modulus of elasticity of concrete in compression test method is, ASTM C 469 – 94.
I HAVE DOUBT ABOUT THE CALCULATION WHICH I READ ABOVE.
I WOULD LIKE TO REQUIST YOU KINDLY SEND THE CALCULATION FORMULA In(EXCEL- Sheet)FOR THE ASTM C 469 – 94.

Thankikg You
Biksha P.Dumpa
NDIA – Project Doha

• MAHENDRAN June 18, 2010 at 2:59 pm

what is meant by modulus of elasiticity?how do apply to modulus of elasity oof cocrete?

• malak philip pharag October 28, 2010 at 3:46 am

what is the value of moduls of elasticity for concret in metric units

• Hasan December 27, 2010 at 8:09 pm

Ec is simply 28 GPa for 35 Mpa concrte

• OMID March 26, 2011 at 4:19 am

Hi,
what is the value of moduls of elasticity for concret in metric units on other codes,eg: AS,CAN,CEB-FIP,NZS ,Eurocode-2
thanks,

• sen May 10, 2011 at 3:19 pm

What is your comment in moduls of elasticity for concret comparing different codes?

• B George June 1, 2011 at 4:47 pm

Can the Modulus of Elasticity of a particular concrete structure or sample be measured, or is it simply a calculated value?

• Sanjay semwal June 2, 2011 at 9:05 am

Do you know ? Concrete is second consumptive material after water

• HAMID September 19, 2011 at 3:30 am

HI
I NEED formula MODULE ELASTISITE CONCRETE with High Strength .PLEASE HELP ME

• nilesh kumar October 31, 2011 at 7:45 am

what r the properties of concrete in fresh nd hardened state.plz give me ans

• SANDEEP January 9, 2012 at 9:34 pm

I NEED formula MODULE ELASTISITE CONCRETE with High Strength .PLEASE HELP ME

• Amoo kabir February 1, 2012 at 12:18 pm

NEED formula MODULE ELASTISITE CONCRETE with High Strength .PLEASE HELP ME

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