AASHTO TSP 2 Indianapolis IN Nov 2829 2018 By Colin A Franco PE Assc Chief Eng RIDOT ETG amp ETF Founding Father Jim Sorenson P AVEMENT P RESERVATION E XPERT ID: 775938
Download Presentation The PPT/PDF document " E mulsion T ask F orce (ETF)" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
E
mulsion
T
ask
F
orce (ETF)
AASHTO TSP
2
Indianapolis, IN
Nov 28-29, 2018
By: Colin A. Franco, P.E.
Assc
. Chief Eng.
RIDOT
Slide2ETG & ETF – Founding Father
Jim Sorenson
Slide3PAVEMENT PRESERVATION EXPERT TASK GROUP (PPETG)
Established in 1991 by FHWA / Jim SorensonPromote the institutionalization of the concepts of pavement preservationParent group of “Emulsion Task Force”
ETG - Formation
Slide48 Regional
Bridge & Pavement
Preservation Partnerships
Bridge Preservation Partnership
Bridge Preservation Partnership
Bridge Preservation Partnership
Bridge Preservation Partnership
Slide5The FHWA PPETG will advance and improve the state of the practice in the area of pavement preservation by working collaboratively with federal, state, local agencies, industry, academic interests, and the 9 regional bridge & pavement preservation partnerships.
Mission
PPETG
Slide6E
mulsion
T
ask
F
orce
(
ETF
)
Slide7Idea conceived at AEMA-ISSA-ARRA meeting February 2008 under guidance of Jim Sorenson, FHWAIdentified need for industry expertise and involvement in ongoing research activities pertaining to asphalt emulsions and finished product systemsFirst meeting in Newport Beach, CA April 7-8, 2008
ETF - Background
Slide8Advance the Effort to Develop Performance Based Methods & Specification for Emulsions Protocols for design Protocols for performanceProtocols for inspection & acceptanceEncourage Adoption of Uniform National Standards
EFT - Original Scope Deliverables
Slide9Emulsion Testing & Residue Recovery MethodsArlis Kadrmas- ChairResidue TestsGayle King- ChairNote: Subcommittees Combined as of March 2010 Arlis Kadrmas to chair combined group
ETF - Subcommittees
Slide10Aggregates, Mix Design, and Performance TestsMary Stroup-Gardiner- ChairApproved Supplier CertificationRoger Hayner- ChairInspection & AcceptanceColin Franco- ChairTack Coat Review (Formed 7/26/10)Chris Abadie- ChairRecycling Emulsions ( NEW)
ETF - Subcommittees
Slide11AASHTO Submittals - Deliverables
Four Standards submitted to AASHTO for Adoption
Standard Practice for
Certifying
Suppliers of Emulsified Asphalt
Recovering Residue
from Emulsified Asphalt using Low Temperature Evaporative Techniques – AASHTO TP-72
Determining
Asphalt Binder Bond Strength
by Means of the Bitumen Bond Strength Test (BBS)
Performance-Graded
Asphalt Binder for Surface Treatments (Surface Performance Graded (
SPG
) Spec)
Slide12AASHTO Submittals – Deliverables (cont.)
6 Test methods for chip seals submitted to AASHTO SOM
Note: Test methods developed and compiled by P.I. S.Shuler through NCHRP 680
Slide13Experimental Approach(Initial Strawman) – for E/SPG
Purpose
Test
Conditions
Report
Residue Recovery
Forced Draft Oven
24 hrs @ambient +
24 hrs @60
º
C
ü
% Residue
Tests on Residue from Forced Draft Oven
High Temperature
DSR
-
MSCR
DSR freq sweep
T
h
T
h
ü
J
nr
ü
G* & phase angle
Polymer Identifier
(Elasticity/Durability)
DSR
-
MSCR
T
h
@3200 Pa
ü
% Recoverable
Strain
High Float Identifier
(Bleeding)*
DSR
–
non
-
linearity
T
h
ü
Test to be
developed
Tests on PAV after Forced Draft Oven Residue
Low Temperature
(Aged Brittleness)*
DSR freq sweep
10 & 20
º
C
Model low T
ü
G*
ü
Phase Angle
Polymer Degradation
(Before/After PAV)*
DSR
-
MSCR
T
h
@3200 Pa
ü
Recoverable Strain
Ratio
Purpose
Test
Conditions
Report
Residue Recovery
Forced Draft Oven
24 hrs @ambient +
24 hrs @60
º
C
ü
% Residue
Tests on Residue from Forced Draft Oven
DSR
-
MSCR
DSR freq sweep
T
h
T
h
ü
J
nr
ü
G* & phase angle
Polymer Identifier
(Elasticity/Durability)
DSR
-
MSCR
T
h
@3200 Pa
ü
% Recoverable
Strain
High Float Identifier
(Bleeding)*
DSR
–
non
-
linearity
T
h
ü
Test to be
developed
Tests on PAV after Forced Draft Oven Residue
Low Temperature
(Aged Brittleness)*
DSR freq sweep
10 & 20
º
C
Model low T
ü
G*
ü
Phase Angle
Polymer Degradation
(Before/After PAV)*
DSR
-
MSCR
T
h
@3200 Pa
ü
Recoverable Strain
Ratio
Bending Beam Rheometer
Slide14Survey of PP TreatmentsEmulsion Product/System Survey EvaluationConducted by Andrew Hanz of Univ. Wisconsin Madison and Colin Franco of RIDOTUpdated prior survey format and submitted to ETFIdentify/prioritize widely used applications Define 2 critical distresses and mechanism of failure for priority applicationDetermine testing needsExisting Tests which are applicable Research or new tests needed
Emulsion Use and Performance Survey
Slide15Top Product Usage PriorityChipseals= 100%Tack Coat= 66.7%Microsurfacing= 62%Modes of Failure Defined- e.g: ChipsealsChip LossBleedingBinder Cracking (Reflective or Environmental)Underlying Mechanisms Identified Existing Tests Available- 84% Yes
ETF Survey Results
Slide16AASHTO Construction Specification J.T.F.
AASHTO has Commissioned a Joint Task Force (S.O. Maintenance, S.O. Construction, and Comp) to work on the construction guide specifications for all emulsion treatments.
Larry Galehouse – was instrumental in getting this going – working with AASHTO COMP, S.O. Maintenance, and S.O. Construction
Slide17Best Practices Document (draft)Original deliverable for Chip Seals and Micro Surfacings.Low Temperature Residue Recovery MethodPlan for Inter-lab Study and data collection (ongoing) TP 72Precision and bias study with AMRL for TP 72
Accomplishments- Pre 2013
Slide18Advance the Effort to Develop Performance Based Methods & Specification for EmulsionsEncourage Adoption of Uniform National StandardsDevelop AASHTO STDs for all the Emulsion Treatments (listed on next slide)Materials SpecsTest MethodsDesign PracticesConstruction Guide SpecsDevelop QA protocols and standards for all Emulsion Treatments
ETF Reenergized Mission - 2013
Slide19Chip SealMicro SurfacingTack CoatFog SealScrub SealSand SealSlurry Seal
Foam Asphalt StabilizationThin Bonded Surface Treatment Cold MixesVirginRecycledCIR
ETF Reenergized Mission- Post 2013, Treatments Requiring Specs
Slide20M 140, Published Fall 2016M 208, Published Fall 2016M-316, Published Fall 2016All new AASHTO Standards
Accomplishments, 2015, Emulsion Binder Specifications
Slide21AASHTO STANDARDSEmulsion TreatmentsM / MPT / TPRW/ SOMCommentsConstruction Guide SpecsBest PracticesChip SealMP27-16 PP82-16 NCHRP 14-37 MicrosurfacingMP28-16 PP83-16 NCHRP 14-37 Tack Coat MP-XX* PP93-18 Fog SealMP33-17 PP88-17 NCHRP 14-37 Scrub Seal Y** PP91-18 Sand Seal MP34-18 PP90-18 Slurry SealMP32-17 PP87-17 Foam Asphalt Stabilization Bonded Surface Treatments (Nova Chip) ü ü2018 Cold Recycled MixturesMP31-17 PP86-17 NCHRP 9-62 LegendEmulsion Binder StandardsM / MPT / TPRW/TRBM=Material SpecsEmulsified AsphaltM140-16 T=Test MethodsCationic Emulsified AsphaltM208-16 R=Design PracticesPolymer-Modified Cationic Emulsified AsphaltM316-16 P=ProvisionalEmulsion/Surface Performance Grades (E/SPG)NCHRP9-63ü=Draft STD Submitted to SOMY**=Tabled by ETF
Accomplishments – Emulsion Treatment Standards
Status: AASHTO Emulsion STDs
Slide22Complete drafting of AASHTO standards for remaining emulsion treatmentsDevelop QA protocols for emulsion treatments starting with microsurfacing and chip sealsComplete Draft of E/SPG Specifications
Next Steps-Short Term Plan
Chip Seal
QA
Std. Completed
Slide23National Accepted StandardsMaterials Specs, Test Methods, Design Practices,Construction Specs, etcMaterials QA:Acceptance Testing (Agency)QC - Quality Control (Contractor)IA - Independent Assurance (Agency)New Process / Product Acceptance ProceduresMaterials Certification:Agency Acceptance PlansQC Plans (Contractor)Vendor Supplied Material CertificationsWorkmanship QA:Equipment CalibrationConstruction Process Checks
QA – Holistic Approach for all Emulsion Treatments
Slide24Education, Training, and Certification:Define the training needs for Agency / Contactor StaffEducation and Training Resources, NHI, TCCC, and IndustryCertification Program for Contractor / Agency Field StaffNote: National Center for Pavement Preservation is taking the lead on education and training. WRAPP is helping.
QA
– Holistic Approach
(cont.)
Slide25SWG Chair, Mike Voth of FHWA is leading this effort Research and field studies being used for SPG development:TxDOT – Chip seals, Darren Hazlett with Dr. Amy EppsNCHRP project 9-50 – Dr. R. Kim at NC StateFederal Lands Chip Seal research by Dr. Gayle King
Development of SPG Specification for Emulsions using Superpave Principles
Note 1. PG - Surface Performance Graded
Note 2. This work will supplement the TxDOT SPG spec currently at the AASHTO SOM
.
Slide26Develop a draft specification for review by the ETF – To complete review by 2018.Conduct field trials using the specification. TXDOT has already conducted trials with their spec.Finalize the spec for review by AASHTO in 2019??NCHRP Project 9-63 will validate E/SPG Spec. Note:draft ETF spec is part of the proposal.
Development of SPG Specification for Emulsions using Superpave Principles
Plans for 2018
Slide27Draft E/SPG Specification (Example)
Slide28Successfully Initiated Research:NCHRP 14-37: Construction Spec for Chip Seal, Microsurfacing, Fog SealNCHRP 9-62: Cold Recycling MixturesNCHRP 9-63: Emulsion Performance GradingProblem Statements 2019Construction Guide Specs – Slurry Seals and Tack CoatsEmulsion based rejuvenating sealsProposal to FHWA Office of Innovation for emulsion
ETF Research
Slide29Now that the AASHTO Standards exist for most emulsion treatments, we now need to:Develop a marketing plan/marketing toolsPromote the technology toAgenciesIndustryAcademia – create course curriculaHow will this be done?Regional PP groupsAASHTO SO Mat, SO Maint, SO Hwy Design, AEMA-ISSA-ARRA meetings/conferences.
Promoting the Use of Emulsions
- Need a comprehensive Plan -
= Subcommittee needed !!!!!? =
Slide30Jim Sorenson1949-2009Champion of the Pavement Preservation Movement
Acknowledgements
Slide31Questions…
?