Getting measurements from Figure 11.20, determine approximate values of the following items for plain concrete, concrete with 2% steel fibers, and concrete with 3% steel fibers: a. Modulus of...

Getting measurements from Figure 11.20, determine approximate values of

the following items for plain concrete, concrete with 2% steel fibers, and concrete with 3% steel fibers:

a. Modulus of elasticity

b. Ultimate strength

c. Strain at failure

d. Toughness. Curves may be approximated with a series of straight lines.

e. Comment on the effects of increasing the steel fiber content on items a, b,

c, and d above.