Tensile Stress-Strain: Ultimate Strain of Plain Concrete

AI Thread Summary
The discussion centers on the differences between the stress-strain curves for concrete in tension and compression, emphasizing that they cannot be derived from one another due to the distinct properties of concrete. The ultimate tensile strength (UTS) of plain concrete is typically around +/- 5 MPa, significantly lower than its compressive strength, which can reach +/- 50 MPa depending on the concrete type. While there are methods to plot a tensile stress-strain curve using the secant modulus, it does not resemble the compression curve. Participants highlight the importance of knowing the quality of concrete when assessing its properties. Understanding these differences is crucial for accurate material analysis and application in construction.
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Hi
If i have the stress-strain curve of concrete(compression) then how do i plot the SS curve for tension with reference with tangent modulus or secant modulus??

what is the ultimate tensile strain of plain concrete?
 
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You cannot deduct SS curve for tension from compression curve.
especially for concrete as tension and compression stress capabilities for this material are completely different.
UTS compression for concrete is typically +/- 50MPa, depending on concrete quality/type ofc.
UTs tension +/-5 MPa
 
dear Alex.malh
what is the ultimate tensile strain of plain concrete?
 
UTS = ultimate tensile strain and see my first post. Be sure to check what concrete quality you have and check google afterwards.
 
there is something to plot the tension SS curve from secant modulus..?
 
Yes, you can but it's not really a curve like the compression curve and technically you don't use the secant modulus.
 

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