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PAPA Regional Meetings 2013. Meetings with PAPA in 2012 : January Remove and Replace Defective Material May Table “H” instituted after PAPA meeting June and August Specification change discussions November Meeting with Dr. James Burati January 2013 – NEW SPECIFICATION.

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Meetings with PAPA in 2012:

  • January

    • Remove and Replace Defective Material

  • May

    • Table “H” instituted after PAPA meeting

  • June and August

    • Specification change discussions

  • November

    • Meeting with Dr. James Burati

  • January 2013 – NEW SPECIFICATION



2012 hma summary
2012 HMA Summary

  • Number of Projects – 33

  • Total Lots - 1178

    • Passing – 1077 (91 %)

    • Failures - 101 (9 %)

  • Total JMF’s – 76

  • Number of Plants - 24


2012 hma summary1
2012 HMA Summary

  • LOT Failures – 101

    • AC Low –17

    • AC High –13

    • Voids Low –39

    • Voids High – 37

    • #200 Low – 3

    • #200 High - 5


2012 hma summary2
2012 HMA Summary

  • Loose Box Samples Tested – 100

    • Passing – 71/Failed – 29

      • AC Low – 0

      • AC High – 3

      • Voids Low – 20

      • Voids High – 5

      • #200 Low – 0

      • #200 High - 2


2012 hma summary3
2012 HMA Summary

  • 12.5 mm – (451) Lots / 37 Failed

    • AC Low – 5

    • AC High – 8

    • Voids Low – 15

    • Voids High – 12

    • # 200 Low – 1

    • #200 High - 2


2012 hma summary4
2012 HMA Summary

  • 19 mm – (422) Lots / 38 Failed

    • AC Low – 8

    • AC High – 4

    • Voids Low – 13

    • Voids High – 15

    • # 200 Low – 0

    • #200 High - 0


2012 hma summary5
2012 HMA Summary

  • 9.5 mm – (164) Lots / 22 Failed

    • AC Low – 2

    • AC High – 0

    • Voids Low – 10

    • Voids High – 9

    • # 200 Low – 2

    • #200 High - 3


2012 hma summary6
2012 HMA Summary

  • 25 mm – (141) Lots / 4 Failed

    • AC Low – 2

    • AC High – 1

    • Voids Low – 1

    • Voids High – 1

    • # 200 Low – 0

    • #200 High - 0


2013 specification changes
2013 – Specification Changes

  • Release Material to Plant Operator or Lab Technician

  • Eliminated #8 Sieve for Acceptance

  • 6” x 4 ¼” x 9” Box Sample Size

  • Provide Storage Shed / Field Samples

  • Core Density Shall not Exceed 97%


2013 specification changes1
2013 - Specification Changes

  • Eliminated 19mm binder with 76-22

  • Increased Wearing RAP to 15%

  • Eliminated F.A. “E” or “H” Requirement

  • Target Gmb Plugs at 115mm (+/-)1.0mm

  • Rich Bottom Voids – Design at 4.0%

    • Additional AC to achieve 2.5% Voids

  • If Plant or Box Samples Fail for 3 Consecutive Days / Review JMF


2013

  • HMA - Back to Basics:

    • Plant and Field Sampling (PTM 746)

    • T-209 , T-312 , T-166

  • Equipment

    • 8” / 12” sieves

      • AASHTO T-30 – Max of 200g on each sieve smaller than the No. 4


Aashto t 209
AASHTO T-209

  • Removed air trapped in the sample - under pressure (27.5 ±2.5 mm Hg) and maintain for 15±2 min

  • Measure water temp and IF different from (77 ±2°F) use adjustment in Section 8.1


Aashto t 312
AASHTO – T-312

  • Place compaction Mold and Base Plate in an oven at the required compaction temp. for a minimum of 30 mins. prior to the estimated beginning of compaction.

  • Place the mixture in the mold in one lift.

  • Before reusing the Mold, place it in the oven for at least 5 mins.


Ptm 715 aashto t 166
PTM 715 / AASHTO T-166

  • T-166 (Method A)

    • Immerse individual specimen for 4±1min.and record the immersed mass

    • Remove specimen from the bath, damp-dry specimen by blotting with damp towel as quickly as possible (not to exceed 5 s) and determine surface-dry mass


Ptm 746 hauling unit
PTM -746 (Hauling unit)

  • EQUIPMENT:

    • A flat bottom, high sided scoop

    • Putty knife for scraping the INSIDE of the scoop

  • Starting low on the pile and extending upward, sample the mixture by creating an approximate 2’ long and 3” to 4” deep vertical furrow.


Ptm 746 hauling unit con t
PTM -746 (Hauling unit con’t)

If the mixture is sampled from at least two places in the truck, place the material removed in this manner on a mixing board, thoroughly mix, Form into a flat pile and quarter to provide a representative sample of the required size. Scrape the INSIDE of the scoop at eachtransfer point to incorporate any fines sticking to the inside of the scoop.


AASHTO R-47

Reducing Samples of HMA to Testing Size



Hma issues on data input
HMA Issues on Data Input

  • Wrong #200 C/F used when calculating gradation. When corrected – several gradations were out of Spec.

  • Gradation on lower screen showed morematerial passing than previous screen

  • Incorrect tolerance band used for gradations – correct band showed Six sieves with Deviations


Hma issues on data input1
HMA Issues on Data Input

  • Volumeter calibration changed Dry weight by 900g however the Volume remained the same?

  • Gmb plugs indicated the Dry specimen weight was heavier than the SSD resulting in negative absorption – if you reverse the weights the Va failed

  • Dry and SSD weights were exactly the same – no absorption? Field cores too!


Hma issues on data input2
HMA Issues on Data Input

  • Wrong Gmm used for density cores

    • 2.435 was used for 95.4% density.

    • Actual was 2.534 for 91.7% (Failure)

  • 2 Gmb plugs had same weight

    • 1 plug absorbed 7g

    • 1 plug absorbed 23g

    • SAME Va % ???


Hma issues on data input3
HMA Issues on Data Input

  • Gmb plug heights outside of the 110mm-120mm range yet still showed passing Va%

  • Gmb plugs always had 5g – 6g H2O absorption- no matter the plug weight or height variances


PTC Materials Data Library

E-DEL (Electronic-Data Entry Log)

Bituminous –Data Entry Log

(Bit – DEL)

Concrete – Data Entry Log

(Con-DEL)

Aggregate – Data Entry Log

(Agg-DEL)


2014

  • PAPA website:

    • BIT DEL program

    • HMA Design Software for 2013 Designs

  • Materials Lab in Somerset : APPROVED

    • JMF approval

      • Producer to Provide Aggregate/Oil/Design Data

      • PTC Materials to Proof Design

    • Database for Future Designs


Ptc materials staff
PTC Materials Staff

  • East:(300-358 & A-20 – A-130)

    • Steve Havrilla – [email protected]

  • Central – (189-300)

    • Brian Wible [email protected]

  • West – (0-189)

    • Chris Forry- [email protected]


  • Our Company is Built on People – those who Work for Us and those We do Business with.Harvey S. Firestone


    Thank you
    THANK YOU ! those We do Business with.

    [email protected]


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