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14 <br />12 <br />10 <br />8 <br />6 <br />f5:5'r fsit4 r1 r�i�.�:�I iiil' . 4 Rut Depth <br />-7% -10% -14% <br />e ce <br />e e <br />Cycles (60 CycIes Per MinuIE( <br />• <br />Figure 2.10. Asphalt Pavement Analyzer (APA) Test Results of Wet Test <br />The mixtures with the higher air void contents rutted at a faster rate than those with smaller air <br />void contents. The greatest difference in rutting rates between 'wet' and 'dry' testing conditions <br />were at the 10% and 7% air void contents; the mixture with 14% air void content showed little <br />difference. After testing in the wet condition the specimens were broken opened and examined <br />for any visual evidence of stripping (Figure 2.11); there was no visual evidence of stripping <br />among any of the test specimens, although there did appear to be some evidence of stripping <br />where the hose interfaced with the mixture surface. <br />Figure 2.11. Visual Examination of APA 'wet' specimens <br />B-16 <br />