Lesson 5/Practice Exercise
6.
Using the information below, determine the trial optimum asphalt content for a surface
course.
Peak of Stability.......................................................
4.5 percent
Peak of Unit Weight ................................................
4.6 percent
Voids in Total Mix...................................................
5.1 percent
Total Voids Filled with AC ......................................
4.9 percent
a.
4.6 percent
b.
4.8 percent
c.
5.0 percent
d.
5.8 percent
7.
Using the information below, determine the job-mix formula.
Coarse Aggregate ....................................................
47.0 percent
Fine Aggregate ........................................................
46.0 percent
Mineral Filler ...........................................................
7.0 percent
OAC ........................................................................
4.8 percent
a.
CA 45.7%, FA 42.8%, MF 5.7%, and AC 5.8%
b.
CA 43.7%, FA 44.8%, MF 7.7%, and AC 3.8%
c.
CA 43.7%, FA 42.8%, MF 7.7%, and AC 5.8%
d.
CA 44.7%, FA 43.8%, MF 6.7%, and AC 4.8%
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