Using Polymer Modified Asphalt Emulsions in Surface Treatments A ...

• Develop/improve performance methods for PME applications to include
interactions between modified asphalt emulsion and aggregate. Efforts to
include curing tests establishing time-to-traffic, moisture damage, and longer
term performance under specified traffic and environmental conditions;
• Improve controls on environmental and pavement conditions at time of
construction;
• Create Delayed-Acceptance or Certified Supplier Programs for Asphalt
Emulsions; and,
• Conduct formal cost-benefit analyses with and without modifiers for specific
asphalt emulsion applications.
It is hoped that an ongoing FLH field study continuing under the report-only format can
be used to support some of these research needs. There are several FLH chip seals
scheduled for the summer of 2008. The materials used should be tested using the
suggested Strawman protocols presented herein. As the laboratory data are collected,
it must be correlated with field performance.
Although problems with curing might be visible shortly after construction, ultimate
performance cannot be analyzed until many years later. FLH collects video pavement
management data every three years. More frequent field inspection may be needed as
the Strawman tests are run. Tying the field performance information over time to the
test results should be an on-going process. A Materials Library of the tested materials
should also be maintained, so that materials may be retested as the test methods are
perfected and pavement performance is known.
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