1. AAR-410 January 14, 20041 FAA Airport Pavement Technology Program u National Airport Pavement Test Facility, FAA William J. Hughes Technical Center, Atlantic City, New Jersey, U.S.A. u New PCC Test Items u Pavement Thickness Design Software u www.airporttech.tc.faa.gov

2. AAR-410 January 14, 20042 New Concrete Mix Design u 5.2 MPa (750 psi) or lower flexural strength to maximize thickness and minimize tendency for corner cracking due to curl (minimum 4.1 MPa (600 psi)). u Final mix has 50 percent cement replacement with flyash.

3. AAR-410 January 14, 20043 Single Test Slab Placement u Gain experience with high volume flyash mix placement and finishing. u Measure curling of cured slab. u Further refine instrument installation from that done in previous test strip. u Monitor procedures for test item curing and early age behavior. u Develop field curing methods.

4. AAR-410 January 14, 20044 Placing Test Slab Finished Slab

5. AAR-410 January 14, 20045 Field Curing of Slab, Beams and Cylinders u Soaker hoses u Burlap u Plastic u Automatic timer for water u Wet cure for 28 days

6. AAR-410 January 14, 20046

7. AAR-410 January 14, 20047

8. AAR-410 January 14, 20048 Results from Test Slab u Experience in placing the high flyash concrete mix. u Instrumentation installation procedures satisfactory. u Low heat of hydration with fairly uniform temperature profile during first 24 hours. u Curling minimal during 28-day cure. u Curling significant after removal of burlap and during drying period.

9. AAR-410 January 14, 20049 Remaining Plans for CC2 u Continue monitoring test slab behavior. u Place three concrete test items on 8 CBR subgrade. u One on grade (concrete placed by 1/30/04). u One on aggregate subbase (concrete placed by 1/30/04). u One on econocrete subbase (concrete placed by 3/12/04). u Subgrade and support placement complete. u Instrumentation complete and installed.

10. AAR-410 January 14, 200410 CC2 Test Objectives u Compare life and performance for 4-wheel and 6-wheel traffic. u Compare life and performance for three different support conditions. u Obtain data on SCI versus repetitions to failure. u Compare interior and edge stresses. u Measure shrinking/warping.

11. AAR-410 January 14, 200411 Tilling Subgrade Rolling Subgrade

12. AAR-410 January 14, 200412 Forms for 20-Slab Test Item

13. AAR-410 January 14, 200413 Placing Test Item Slabs in a Checker-Board Pattern

14. AAR-410 January 14, 200414 Installing Strain Gages at Slab Center Strain Gages Installed at Slab Edge

15. AAR-410 January 14, 200415 Pavement Software Products *All checked programs available on www.airporttech.tc.faa.gov       