Modulus Of Elasticity Of Concrete
Posted in Concrete Engineering |
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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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- Water Hammer
- Water/ Cemetitous Materials Ratio
- Columns
- Allowable Stress Design For Building Columns
- COMPOSITE CONSTRUCTION
- Sieve Analysis of Aggregates
- Load And Resistance Factor Design For Building Beams
- Method For Determining Runoff
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How can i calculate the modulus of elasticity of concrete that it is not 28-day yet?
In what circumstances that a back calculation need to be carried out to determine the Modulus of
Elasticity of the concrete?
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.
how can i calculate the elasticity for concrete, steel, wood, plz tell me by the above mentioned email add.
thanks
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.
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
According to ASTM C469, why do we used the value of stress at 40% of ultimate load for calculating the modulus of elasticity?
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.
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
what is meant by modulus of elasiticity?how do apply to modulus of elasity oof cocrete?