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the Woodbury Newbury Alcove Straight Section sample, which showed signs of stripping after only 521 <br />passes. An additional observation from the data is that mixes from older pavements performed better <br />than those of newer pavements due to higher stiffness values for the aged binders. <br />Figure 11. Specimens for stripping study undergoing Hamburg wheel testing <br />3.2.3 Fracture energy testing <br />The results of DCT tests are reported in Appendix C. As the tests provided no useful information about <br />stripping behavior in chip -sealed asphalt, DCT testing was discontinued after seven tests. <br />3.2.4 Laboratory permeability tests <br />The majority of locations yielded four samples for permeability tests, the exceptions being the west end <br />of 93rd Avenue in Blaine (2 samples) and the cul-de-sac of Newbury Alcove in Woodbury (2 samples). The <br />average permeability results (Kand K20 the permeability at 20 deg Celsius) are reported in Table 8. Full <br />data from all 68 samples tested are presented in Appendix D. As noted in Table 8, the specimens <br />collected were relatively impermeable, with the highest measured permeability from a single test no <br />higher than 23.7x10-5 cm/sec across all samples. <br />26 <br />