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2.1.8 Woodbury <br />Three locations in Woodbury, MN, were examined for the project work. Sections of Bridgewater <br />Parkway and Newbury Alcove (the cul-de-sac and a straight portion) were surveyed and cored on <br />November 19, 2014, and November 20, 2014. The Newbury Alcove cul-de-sac portion was unsealed and <br />included for a comparison of the chip -sealed and unsealed portions of the road. <br />2.2 FIELD WORK CONDUCTED <br />The project research included surveys and extraction of cores from field locations indicated in Section <br />2.1. A total of 280 cores were collected for testing. The subsections below detail survey and testing <br />procedures and core extraction operation; data and results are presented in Chapter 3. <br />2.2.1 Condition surveys <br />Members of the research team noted the general condition of all sections used for the project research. <br />Condition surveys included observations and notes on localized distresses. The process of coring allowed <br />the technician to assess the presence of stripping; this information was recorded with other general <br />information on the pavement condition. In addition, ground penetrating radar (GPR) tests, detailed <br />below, included supporting video surveys that could be used to examine the pavement condition. <br />2.2.2 Coring for laboratory testing <br />Coring operations for the project research involved the use of a coring rig mounted to the rear of a <br />truck. The rig is shown in Figure 3. Six-inch diameter cores were obtained by drilling through the asphalt <br />course to the top of the base layer. In addition to providing an intact specimen for testing, it allowed for <br />the measurement of the in -situ pavement thickness. <br />9 <br />