Production, Transportation, Placement and Compaction Equipment

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Production, Transportation, Placement and Compaction Equipment Powered By Docstoc
					    Production, Transportation, Placement
   and Compaction Equipment Advances for
           Enhanced HMA Quality




CUPGA 2009
Dennis Hunt, Gencor Industries, Inc.
                       Control of Temperature

     •Production
     •Storage
     •Transportation
     •Placement
     •Compaction

CUPGA 2009
Dennis Hunt, Gencor Industries, Inc.
                                       Flue Gasses




             High CO but Low NOx                Low CO but High NOx

CUPGA 2009
Dennis Hunt, Gencor Industries, Inc.
                               Burner Technology




                      Linkage               Drive motors
CUPGA 2009
Dennis Hunt, Gencor Industries, Inc.
                    Flue Gas Characterization




CUPGA 2009
Dennis Hunt, Gencor Industries, Inc.
                    Production Temperature
                  100

                   90

                   80

                   70

                   60

                   50                                                   Air
                                                                        Fuel
                   40

                   30

                   20

                   10

                    0
                         1      2      3   4   5   6   7   8   9   10




CUPGA 2009
Dennis Hunt, Gencor Industries, Inc.
CUPGA 2009
Dennis Hunt, Gencor Industries, Inc.
                    Production Temperature




CUPGA 2009
Dennis Hunt, Gencor Industries, Inc.
CUPGA 2009
Dennis Hunt, Gencor Industries, Inc.
                        Silo Storage

               Decreased Oxidation
                     163oC
                     127oC




CUPGA 2009
Dennis Hunt, Gencor Industries, Inc.
                           Temperature Transfer
      • Heat transfer is thermal energy in transit due
        to a spatial temperature difference
            – The greater the difference in temperature
              between an object and its surroundings the
              greater the heat transfer rate will be.
      • Newton’s Law of Cooling
            – The law states that the rate of change of the
              temperature of an object is proportional to the
              difference between its initial temperature T0 and
              the ambient temperature Ta at time t.
CUPGA 2009
Dennis Hunt, Gencor Industries, Inc.
                                       Transportation
                                           ΔT




CUPGA 2009
Dennis Hunt, Gencor Industries, Inc.
                                 Temperature Trial

   • Denver, Co – 2/19/2009
         • 200 tons surface mix
         • 20% RAP
   • Ambient temperature 6oC
   • 105oC behind screed
   • Pavement density 94.6%


CUPGA 2009
Dennis Hunt, Gencor Industries, Inc.
CUPGA 2009
Dennis Hunt, Gencor Industries, Inc.
CUPGA 2009
Dennis Hunt, Gencor Industries, Inc.
                                         Compaction




                                       Intelligent Compaction
CUPGA 2009
Dennis Hunt, Gencor Industries, Inc.
   Better Temperature Control




CUPGA 2009
Dennis Hunt, Gencor Industries, Inc.
                                       Thank you




CUPGA 2009
Dennis Hunt, Gencor Industries, Inc.