1. HMA PLANT OPERATION

2. Types Of Plants BATCHDRUM MIXER

3. NCAT 3 Basic Purpose Of HMA Plants To produce a quality hot asphalt mixture that contains the desired proportions of asphalt and aggregate and meets all specifications.

4. Batch plant typical layout Storage Silo Batch Tower Dryer Conveyor Belt Aggregate Bins Burner Asphalt Storage Hot elevator

5. Drum Mixer Plant typical layout Storage Silo Dryer Conveyor Belts Aggregate Bins Burner Asphalt Storage

6. NCAT 6 Common Plant Operations Cold aggregate storage and feeding Dust control and collection Mix storage Weighing and handling

7. NCAT 7 Common Plant Operations Cold aggregate storage and feeding Dust control and collection Mix storage Weighing and handling

8. NCAT 8 Aggregate Stockpile

9. NCAT 9 Stockpiling Operations

10. NCAT 10 Cold Feed BINS Conveyor Belts

11. NCAT 11 Common Plant Operations Cold aggregate storage and feeding Dust control and collection Mix storage Weighing and handling

12. NCAT 12 Hma Mixing Plants Create Dust

13. NCAT 13 Centrifugal Dust Collector

14. NCAT 14 Baghouse Dust Collector

15. NCAT 15 Collector Efficiency 74 micron 30 micron 10 micron 5 micron 1 micron Cylone (80-90%) Multicone (80-90%) Wet collector (90-96%) Baghouse

16. NCAT 16 Common Plant Operations Cold aggregate storage and feeding Dust control and collection Mix storage Weighing and handling

17. NCAT 17 Storage Stucture Typical Layout HOT MIX PLANT Surge Bin Conveyor

18. SURGE SILO

19. NCAT 19 Common Plant Operations Cold aggregate storage and feeding Dust control and collection Mix storage Weighing and handling

20. NCAT 20 Plants are computer controlled

21. TRUCK BEING LOADED FROM A DIRECTLY FROM A BATCH PLANT

22. Truck Being Loaded From A Surge Silo

23. NCAT 23 Truck Loading from a Surge Bin

24. BATCH PLANT typical layout Storage Silo Batch Tower Dryer Conveyor Belt Aggregate Bins Burner Asphalt Storage Hot elevator

25. NCAT 25 Batch Plant Batch Tower Pug Mill

26. NCAT 26 Burner - Batch Plant

27. NCAT 27 Schematic of a batch plant

28. NCAT 28 Screen Deck HOT BINS

29. NCAT 29 Pug Mill

30. Drum Mixer Plant typical layout Storage Silo Dryer Conveyor Belts Aggregate Bins Burner Asphalt Storage

31. Drum Dryer Mixer

32. NCAT 32 Temperature Profile in Drum Mixer

33. Dryer For Drum Dryer Mix Plant

34. Dryer For A Drum Mixer Plant Aggregate Entry Point

35. NCAT 35 Controls

36. Small Drum Mixer Plant

37. Sometimes Things Go Wrong

38. NCAT 38 Questions - ?