337The wheels of the compaction equipment shall be kept properly moistened with

337 The wheels of the compaction equipment shall be kept properly moistened with water or water with detergent to prevent adhesion of the materials to the wheels. Areas inaccessible to rollers shall be compacted thoroughly with hand tampers or 280 other mechanical devices in accordance with 409.03(d)7 to achieve the required compaction. A trench roller, in accordance with 409.03(d)6, may be used to obtain compaction in depressed areas. The final two roller applications shall be completed at the highest temperature where the mixture does not exhibit any tenderness. Vehicular traffic will not be allowed on a course until the mixture has cooled sufficiently to prevent distortions. 290 Transverse rumble strips shall be compacted with vibratory compacting equipment in accordance with 409.03(d)7 unless otherwise stated. 402.16 Low Temperature Co mpaction Requirements Compaction for mixtures placed below the temperatures listed in 402.12 shall be controlled by density determined from MSG of the plate samples and cores cut from the compacted pavement placed during a low temperature period. Samples shall be obtained in accordance with ITM 580. Acceptance will be based on a plate sample and two cores. The Engineer will randomly select the locations in accordance with ITM 802. The transverse core location will be locat ed so that the edge of the core will be 300 no closer than 3 in. from a confined edge or 6 in. from a non-confined edge of the course being placed. For compaction of HMA during low temperature periods with quantities less than 100 t per day, acceptance may be visual. The Contractor shall obtain cores in the presence of the Engineer with a device that shall produce a uniform 6.00 ±0.25 in. diameter pavement sample. Coring shall be completed prior to the random location being covered. The final HMA course shall be cored within one work day of placement. Damaged cores shall be discarded and 310 replaced with a core from a location selected by adding 1 ft to the longitudinal location of the damaged core using the same transverse offset. The Contractor and the Engineer shall mark the core to define the course to be tested. If the core indicates a course thic kness of less than two times the maximum particle size, the core will be discarded an d a core from a new random location will be selected for testing. The Engineer will take immediate possession of the cores. If the Engineer’s cores are subsequently damaged, additional coring within a specific section will be the 320 responsibility of the Departme nt. Subsequent core locatio ns will be determined by subtracting 1 ft from the random location using the same transverse offset. 402.16 338 The density for the mixture shall be expressed as: Density, % = BSG MSG x 100 where: BSG = average bulk specific gravity MSG = maximum specific gravity The Engineer will determine the bulk speci fic gravity of the co res in accordance with AASHTO T 166, Method A or AASHTO T 331, if required. The maximum specific gravity will be mass determined in water in ac cordance with AASHTO T 209. Density shall not be less than 93.0%. The Contractor shall refill the co re holes in accordance with 401.16.