1. HMA PLACEMENT

2. NCAT 2 To Be Covered Hauling Placement Compaction

3. NCAT 3 Tandem Axle End Dump Truck

4. NCAT 4 High Dump Semi-truck

5. NCAT 5 Belly Dump

6. NCAT 6 Multi-WHEELED Conveyor Feed

7. NCAT 7 Self Propelled Paver

8. NCAT 8 Self Propelled Paving Machine THE BASIC PRINCIPLE HAS NOT CHANGED MUCH

9. NCAT 9 Self Propelled Paving Machine HMA Flow

10. NCAT 10 Screed Unit

11. NCAT 11 Forces On Screed

12. NCAT 12 ONE OF THE ESSENTIALS FOR A CONSISTENT AND HIGH QUALITY HOT MIX ASPHALT PAVEMENT IS TO PROVIDE FOR A CONTINUOUS OPERATION

13. NCAT 13

14. NCAT 14 Material Transfer Device

15. NCAT 15 COMPACTION GOOD COMPACTION LEADS TO GOOD PERFORMANCE

16. NCAT 16 Reason For Compaction To prevent further compactionTo prevent further compaction To provide shear strength or resistance to ruttingTo provide shear strength or resistance to rutting To ensure the mixture is waterproofTo ensure the mixture is waterproof To prevent excessive oxidation of the asphalt binderTo prevent excessive oxidation of the asphalt binder

17. NCAT 17 Durability vs Air Voids % Air Voids Stability Cohesion Zone of Highest Durability 0 FlushingRaveling

18. NCAT 18 Factors Affecting Compaction Mix PropertiesMix Properties –Aggregate –Asphalt –Mix Temperature Layer ThicknessLayer Thickness Environmental FactorsEnvironmental Factors RollersRollers

19. NCAT 19 Temperature is critical

20. NCAT 20 Rollers VibratoryVibratory Pneumatic-tiredPneumatic-tired Steel wheeled tandem rollersSteel wheeled tandem rollers

21. NCAT 21 Vibratory Roller

22. NCAT 22 Pnuematic Roller

23. NCAT 23 Steel Wheeled Roller

24. NCAT 24 Checking Density With Nuclear Gauge

25. NCAT 25 Extracting A Core

26. NCAT 26 Questions - ?