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Preliminary Test Plan for Asphalt Overlays on CC2 Rigid Pavements

Preliminary Test Plan for Asphalt Overlays on CC2 Rigid Pavements. Trafficking completed on CC2 test items December, 2004. Rubblizing of north side completed January, 2005. Five-inch P-401 asphalt overlay completed June, 2005. Plan View of Single PCC Test Item. Shoulder. 15 ft x 15 ft Slabs.

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Preliminary Test Plan for Asphalt Overlays on CC2 Rigid Pavements

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  1. Preliminary Test Plan for Asphalt Overlays on CC2 Rigid Pavements • Trafficking completed on CC2 test items December, 2004. • Rubblizing of north side completed January, 2005. • Five-inch P-401 asphalt overlay completed June, 2005. 1

  2. PlanView of Single PCC Test Item Shoulder 15 ft x 15 ftSlabs 60ft Transition Transition 75ft 2 Shoulder

  3. Profile of Test Items Before Rubblization and Overlay MRC MRG MRS 17in. T5 T6 12 in. Concrete 12 in. Concrete 12 in. Concrete 17in. ~4 Feet of Rebuilt Subgrade CBR 7-8 (total subgrade depth of 9 feet) 6 in P-306 econocrete 10 in. P-154 subbase 6 in P-154 subbase 3

  4. Rubblizing the North Side of CC2-O 4

  5. Rolling the Rubblized Pavement 5

  6. Rubblized on the Left (North) and As-Trafficked on the Right (South) Before Overlay 6

  7. HWD Measurements on 10 ft Grid After Overlay 7

  8. Trafficking CC2-O • Trafficking will start after the asphalt has reached temperature consistently above 70 deg F – about the middle to end of June. • Trafficking will end when the temperature of the asphalt has dropped consistently below 70 deg F – about middle to end of October. • Load in both wheel tracks will be four-wheel at 54-in dual spacing, 57-in tandem spacing, and 55,000 lb wheel loads. 8

  9. Additional Activities During Trafficking of CC2-O • Transverse profiles for each test item and each wheel track. • HWD measurements for each test item and each wheel track. • Visual surveys. • PSPA measurements of asphalt modulus as frequently as possible. 9

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