An urban expressway is being designed for a congested area in Washington, D.C. It is expected that most of the time traffic will be moving at a slow rate. If the anticipated ESAL is 8 × 106, determine an appropriate asphalt binder for this project.
What will be an ideal response?
Assume design reliability is 98%. From Table 18.13, preliminarily select
PG 58-16 as the binder. With slow traffic as a design criterion, increase
temperature grade of binder by one. With ESAL < 10 × 106, no adjustment is
required. Therefore, select PG 64-16 as the appropriate binder.
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