SLIDE 1 Warm Mix Asphalt (WMA)
Technical Committee Meeting Agenda Working Session #9 Tuesday, May 19, 2015 4:00 PM – 5:00 PM
1) 4:10PM-4:30PM: Update-Program Status Simplified the testing workplan as there were concerns from last year’s meeting (over $50k, test track, field and lab mix test)
a) RFP Response
FL DOT will be the test lab, working to get a final test cost set up. FL DOT will select one Lab Produced Mix to be the control and will test all samples in comparison to this control; no RAP/RAS in this mix. Technologies that cannot be reproduced in the laboratory need to have a separate control mix produced in the same plant, but without using the WMA technology and produced at HMA temperature. For clarification: lab mixes will be compared to lab mixes, plant mixes will be compared to plant mixes (“apples to apples” so to speak). We will attempt to replicate conditions as best as possible. Need to try to ensure the binder grade selected is one that will work for the majority of states. We are trying to compare what the additive does to the base mix as a prequalification. States can then look into conducting additional testing beyond this baseline should they wish.
b) Extraction (T164: Method/Chemical used)
Currently AASHTO T164, Method A is called out in the work plan. However FL DOT runs Method B. Trepanier (IL): stated that method B applies heat and would be difficult to control and make this comparison correctly. ME performs Method A as well. If the decision is made to stay with Method A then the TC will need to look into finding a lab that can do this testing. 2) Action Items for 2015 AI: Determine best way to run T164 Method A by either providing Florida with the equipment or having another facility run the testing. AI: Update the name of this TC to “Warm Mix Asphalt Technologies” AI: Reach out to industry to let them know about the program and that testing will begin soon. AI: Determine cost of testing including any additional NTPEP fees.
SLIDE 2 NTPEP 2015 WMA Session Attendance
First Name Last Name Employer Email Phone 1 Jack Cowsert NCDOT jcowsert@ncdot.gov 919-733-7088 2 Danna Crouse OKDOT dcrouse@odot.org (405) 522-4917 3 Jason Davis LADOTD jason.davis@la.gov 225-248-4106 4 Kidada Dixon ALDOT dixonk@dot.state.al.us (334) 353-6940 5 Rick Douds GADOT rdouds@dot.ga.gov 404-608-4805 6 Matthew Elam Western Infrastructure matt@westerninf.com (970) 261-5004 7 William Faber AZ DOT wfaber@azdot.gov 8 Allen Gallistel MNDOT allen.gallistel@state.mn.us 651-366-5545 9 Jay Goldbaum CDOT Jay.Goldbaum@state.co.us (303) 398-6561 10 Heather Hall TNDOT heather.purdy.hall@tn.gov 615-350-4104 11 James Henry DCDOT james.henry@dc.gov 202-671-2393 12 Reed Henry Pavement Design Manager dhenry@azdot.goc 602-712-8488 13 Brian Hunter NCDOT bhunter@ncdot.gov 919-329-4093 14 Steven Ingram ALDOT ingrams@dot.state.al.us 15 Brian Korschgen AASHTO bkorschgen@aashto.org 202-624-8566 16 George Lian GADOT glian@dot.ga.gov 17 Oak Metcalfe MTDOT rmetcalfe@mt.gov 406-444-9201 18 Richard Mulcahy MADOT richard.mulcahy@dot.state.ma.us 617-951-1333 19 Ting Nahrwold INDOT tnahrwold.indot.in.gov 20 Charles Palmer AR State Hwy and Transportation Dept kevin.palmer@ahtd.ar.gov (501) 569-2185 21 Barry Paye WIDOT Barry.paye@dot.wi.gov 608-246-7945 22 Joseph Putherickal IADOT joseph.putherickal@dot.iowa.gov 515-239-1259 23 Bill Real NHDOT wreal@dot.state.nh.us 804-786-9094 24 Nikita Reed FLDOT nikita.reed@dot.state.fl.us 25 Erany Robinson-Perry GADOT erobinson@dot.ga.gov 26 Brennan Roney GADOT broney@dot.ga.gov 404-608-4816 27 Evan Rothblatt AASHTO erothblatt@aashto.org 202-624-3648 28 Jesus Sandoval-Gil AZ DOT Concrete Engineer JSandoval-Gil@azdot.gov 928-200-4260 29 Robert Sarcinella Sarc Engineering & Consulting techpsu@yahoo.com 30 Joseph Stilwell MEDOT joseph.r.stilwell@maine.gov 207-215-3643 31 Paul Sullivan Materials Evaluation Testing Engineering Azdot psullivan@azdot.gov (602) 712-8205 32 Jim Trepanier ILDOT james.trepanier@illinois.gov 217-782-9607
SLIDE 3 33 Brenda Waters PennDOT brwaters@pa.gov 34 Scott Wutzke NDDOT swwutzke@nd.gov (701)328-6902 35 Brad Young OHDOT brad.young2@dot.state.oh.us 614-351-2882 36 Merrill Zwanka SCDOT Zwankame@scdot.org 803-737-6682
SLIDE 4
NTPEP Technical Committee Meeting May 19, 2015
SLIDE 5
4:00PM-4:10PM: Call to Order and
Introductions
4:10PM-4:30PM: Update-Program Status
RFP Response Extraction (T164: Method/Chemical used)
4:30PM-4:40PM: Discuss DataMine 2.0 and
DataMine 3.0 Items
4:40PM-4:50PM: Industry Concerns 4:50PM-5:00PM: Open Discussion Action Items for 2015
SLIDE 6
Last year’s meeting – concerns on workplan
expense
Over $50k per product Field and lab mix testing Test track placement required
Simplified the testing workplan
Eliminated Test Track Eliminated Field Sample Collection Reduced the number of tests to be run
SLIDE 7
Request for proposals sent out Florida DOT the only respondent
SLIDE 8
Specimen production
Lab produced mix (LMLC) Plant produced* (PMLC)
Only when special plant processes are used that can’t
be replicated in the lab
SLIDE 9
Lab Mix, Lab Compacted
Continuous Grade of Binder with & without
additive
Plant Mix, Lab Compacted
Extracted Continuous Grade of Binder – Plant With & without additive Plant produced mixes will require extraction and
recovery.
Base PG Binder Type to be selected in
consultation with FDOT
SLIDE 10
AASHTO T164, Method A (Centrifuge)
Specified
Florida runs Method B (Reflux)
Is this acceptable?
Solvent Type
Is there a particular solvent that we should specify?
Do we eliminate extraction all together? How do we evaluate the impacts of foaming on
PG values?
SLIDE 11
Testing laboratory will select a mix to use for
the testing
Mix that is common for the state Uses common materials No RAP/RAS
Mix will be kept the same for all tests Baseline (non-additive mix) will be run once
during year
SLIDE 12
Mixture Testing
Volumetric Properties (Gmm, Gmb, etc.) Tensile Strength Ratio Hamburg Wheel Dynamic Modulus Flow Number
Compared to baseline (non-additive) mix tests
results for reporting
SLIDE 13
Laboratory Mixed, Lab Compacted
Approximately $5,000 per product
Plant Mixed, Lab Compacted
Approximately $15,000 per product
Cost factors
Baseline mix testing, NTPEP Data & Overhead, data
review, etc.
Exact costs yet to be determined
SLIDE 14
Comments & Concerns to workplan Need to cultivate Industry TC Members
SLIDE 15
Comments Concerns To do list Beer!
