U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
202-366-4000
Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations
![]() |
This report is an archived publication and may contain dated technical, contact, and link information |
Federal Highway Administration > Publications > Research > Structures > Laboratory Evaluation of Waterborne Coatings on Steel |
Publication Number: FHWA-RD-03-032 |
(a)
(b)
Figure 1. FTIR spectrum of (a) styrene modified
acrylics, (b) unmodified (vinyl)
acrylics using diffuse reflectance sample
accessory.
Figure 2. Adhesion strength of waterborne primers before test.
Conversion factor: 1 MPa = 145 psi
Figure 3. Adhesion strength of waterborne coating systems before test.
Conversion factor: 1 MPa = 145 psi
Figure 4. Comparison of topcoat gloss reduction by three test methods.
Figure 5. Comparison of topcoat color change by three test methods.
a.
b.
c.
Figure 6. Coating conditions of system 2 after
exposures.
a. 3,000-h test A b.
3,000-h test B c. 2-y outdoor exposure
a.
b.
c.
Figure 7. Coating conditions of system 1 after
exposures.
a. 3,000-h test A b. 3,000-h test B c. 2-y outdoor exposure
Figure 8. Plot of scribe
creepage of zinc-rich coating systems over
SP 10 surfaces versus
laboratory test time after test A.
Figure 9. Plot of scribe
creepage of zinc-rich coating systems over
SP 10 surfaces versus
laboratory test time after test B.
Figure 10. Plot of scribe creepage of zinc-rich coating
systems over
SP 10 surfaces versus
outdoor exposure time.
Figure 12. Plot of scribe creepage
of acrylic coating systems over
SP 10 surfaces versus laboratory
test time after test B.
a.
b.
c.
Figure 14. Coating conditions of system 3 after
exposures.
a. 3,000-h test A b. 3,000-h test B c. 2-y outdoor exposure
a.
b.
c.
Figure 15. Coating conditions of system 5 after
exposures.
a.
3,000-h test A b. 3,000-h test B c. 2-y outdoor exposure
a.
b.
c.
Figure 16. Coating conditions of system 8 after
exposures.
a. 3,000-h
test A b. 3,000-h test B c. 2-y outdoor exposure
a.
b.
c.
Figure 17. Coating conditions of system 10 after
exposures.
a.
3,000-h test A b. 3,000-h test B c. 2-y outdoor exposure
Figure 18. Plot of scribe creepage of epoxy coating systems
over SP 10 surfaces
versus laboratory
test time after test A.
Figure 19. Plot of scribe creepage
of epoxy coating systems over SP 10
surfaces versus laboratory
test time after test B.
Figure
20. Plot of scribe creepage of epoxy coating systems over
SP 10 surfaces versus
outdoor
exposure time.
a.
b.
.
c.
Figure 21. Coating conditions of system 13 after
exposures.
a.
3,000-h test A b. 3,000-h test B c. 2-y outdoor exposure
Figure 22. Plot of scribe
creepage of polyurethane coating system (system 12)
over SP 10 surfaces versus laboratory test
time after test A.
Figure 23. Plot of scribe
creepage of polyurethane coating system (system 12)
over
SP 10 surfaces versus laboratory test time after test B.
Figure 24. Plot of scribe
creepage of polyurethane coating system (system 12)
over SP 10
surfaces versus outdoor exposure time.
Figure 25.
Comparison of mean scribe creepage developed
by different coating
types in three test methods.