Agenda - Council - 02/11/2020 - Laserfiche WebLink

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3.1.1 Condition of pavement sections The level of stripping varied from site to site. In the collection of core specimens, field observations were made on the extent of stripping in the vicinity of coring, in addition to general notes on the core itself. A comparison of core condition is shown in Figure 9 using cores collected for the study from a location in Shoreview, MN, that was not included in the final database. Figure 9b shows not only stripping behavior under the chip seal, but also stripping in asphalt lifts. An intact core from a nearby location is shown in Figure 9a to illustrate the extent of stripping through the core depth. (a) (b) Figure 9. (a) Intact core and (b) core stripped under chip seal and between asphalt lifts, recovered from city of Shoreview, MN A rough assessment of stripping for all cores on a given site location is recorded in Table 4, based on the extent of condition notes. As a rule, sites with more cores with notes on stripping were considered to have higher levels of stripping than sites with cores with fewer notes. Given its dependency on the observer, this measure is not comprehensive nor objective, and levels of stripping are referred to only in a general sense in the discussion and conclusions. Individual condition surveys and core collection notes are recorded in Appendix A. 19