Yt.
Structural
- Mar 10, 2015
- 100
Hi, I have the following expressions to asses Concrete Elasticity and tensile strength. My problem is that they are much different between them. Which criteria would recommend me? Thanks
1-
Ec: 15000*(f'c)^0,5 [kgf/cm2]
fr: 2*(f'c)^0,5 [kgf/cm2]
---------------------------------
2-
Ec: 47000*(f'c)^0,5 [kgf/cm2]
fr: 6.3*(f'c)^0,5 [kgf/cm2]
---------------------------------
3-
Ec: 8000*(f'c^2+8)^(1/3) [kgf/cm2]
fr: 0.3*(f'c^2)^(1/3) [kgf/cm2]
1-
Ec: 15000*(f'c)^0,5 [kgf/cm2]
fr: 2*(f'c)^0,5 [kgf/cm2]
---------------------------------
2-
Ec: 47000*(f'c)^0,5 [kgf/cm2]
fr: 6.3*(f'c)^0,5 [kgf/cm2]
---------------------------------
3-
Ec: 8000*(f'c^2+8)^(1/3) [kgf/cm2]
fr: 0.3*(f'c^2)^(1/3) [kgf/cm2]