committee on materials & pavements · clarification to section 4 for test quantities. update to...

Tech Subcommittee 2a

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COMMITTEE ON MATERIALS & PAVEMENTS

2019 Mid-Year Meeting (Webinar) Tuesday, February 5, 2019

1:00 – 2:30 PM EST

TECHNICAL SUBCOMMITTEE 2a Emulsified Asphalt

I. Introduction and Housekeeping

II. Call to Order and Opening Remarks

Scott Andrus left the role of VC and Scott Nussbaum (UT) has replaced him III. Roll Call

IV. Approval of Technical Subcommittee Minutes

Minutes of the August 6, 2018, TS 2a meeting in Cincinnati, Ohio (Attachment 1) UT motion to approve minutes; NC second; motion passes

Voting Members: Brian Pfeifer IL Chair

Scott Nussbaum UT Vice Chair, w/ Howard Anderson, Roy Ulibarri, Dave Thomas, Bill Lawrence

Scott George AL Peter Wu GA X Michael Santi ID Allen Myers KY X Jason Davis LA James Williams, III MS Denis Boisvert NH Russell Thielke NY Brian Hunter NC X Eric Biehl OH X w/ Jake Lautanen Matt Romero OK Timothy Ramirez PA X Temple Short SC X w/Merrill Zwanka Joe Feller SD Michael Doran TN X w/ Brian Egan, Joseph Kerstetter William Bailey VA Becca Lane ON Dan Speer CA X Charlie Pan NV X Bob Horan AI X Oak Metcalfe MT X Mike San Angelo AK X Brian Johnson Re:source Maria Knake, Steve Lenker Greg Sholar FL X Brett Trautman MO X Michael Benson AR X Rick Barezinsky KS X


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V. Old Business A. COMP Ballot Items (Including any ASTM Changes/equivalencies)

1. Outstanding items from Annual Meeting? B. TS Ballots C. Reconfirmation Ballots

1. T 72 (Saybolt Viscosity), T 78 (Distillation of Cutback Asphalt Products), and T 302 (Polymer Content), all votes affirmative: 16-Yes, 0-No, and 3-No Vote

2. Comments from TN on T 72: Section 6.2 figure 2 show very specific dimensions for the withdrawal tube yet mentions or other suitable device. What makes a tube suitable? Are there certain dimensions the tube needs to adhere to?

We have same question for Section 6.3 figure 3 very specific dimension yet references just one suitable design. Is this level of detail needed? Are there dimensions that need to be met? Should table one in section 6.4 be updated to include electronic thermometers? Section 6.6 has similar question as that for figure 2 and 3 that is specific dimensions yet makes reference of alternate design. Do we need to define critical dimensions for funnel? Section 8.5 says that the stream of oil will just strike the neck of the flask. Do we need to define or point out on Figure 5 the location or point where the stream of oil should strike the neck? Is there a small group or volunteers to work together to on updating T 72? Please get in touch with Brian P if you would like to

D. Task Force 2018-01: T 59 revisions There are minor editorial changes and changing the numbering format. Clarification to section 4 for test quantities. Update to section 7 Addition of paddle viscometer Removal of Saybolt from section 9 This standard is currently with the ETF and they are awaiting response.

VI. New Business A. Research Proposals – none received B. AASHTO Re:source/CCRL/NTPEP - Observations from Assessments – nothing specific at this time but if

there is anything re:source can look into on behalf of the TS let them know C. NCHRP Issues - none D. Correspondence, calls, meetings – PP 86 issue received from WV. There will be a balloted item with

proposed edits to standards. E. Presentation by Industry/Academia

1. AASHTO TSP2 Emulsion Task Force Update – Colin Franco, RIDOT 1. Presented on the work of the ETF and how TS 2a and 5b are related 2. Emulsified Asphalt Performance Grading (EAPG) 3. NCHRP work for getting performance specifications for emulsified asphalts

F. Revisions/Work on Standards for Coming Year 1. Full standards and provisional standards due for reconfirmation (Attachment 2) Would anyone

like to be a steward for these standards. The Chair asked for volunteers to be stewards 2. KY will take T 79 3. IL will do T 300 4. If you would like to be stewards please reach out to Brian. Brian will follow up with the rest of the

standards ahead of the annual meeting.


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G. Proposed New Standards 1. Permission forms for drawings/photos

2. For new and revised photos and drawings please try to send publications the native art file (the .jpg or CAD)

H. Proposed New Task Forces - none I. New TS Ballots? - none J. Technical Subcommittee membership – if you would like to become a member or friend of the

committee, please email Brian, Scott, and Casey. VII. Open Discussion

TN: Is anyone using T 382 in comparison or in leiu of saybolt? - A DOT did a comparison between saybolt and paddle visc but they didn’t necessarily

correlate depending on the material type. The chemist in lab preferred paddle visc for ease of use and clean-up.

- NC just bought one but hasn’t had a chance to really use it enough to have a strong opinion either way.

- OH: how are states implementing the transition? Seems like most are still in the very beginning phases of using their viscometers.

VIII. Adjourn 2 pm

COMP TS Planning Ahead—Full Standards

Designation No. Title ASTM Equiv. Planning Needed TS 2a

M 81‐92 (2017)Cutback Asphalt (Rapid‐Curing Type)M 081‐92 (2017) No

M 82‐17Cutback Asphalt (Medium‐Curing Type)M 082‐17 No

M 140‐18Emulsified AsphaltM 140‐18 No

M 208‐18Cationic Emulsified AsphaltM 208‐18 No

M 316‐18Polymer‐Modified Emulsified AsphaltM 316‐18 No

R 5‐17Selection and Use of Emulsified AsphaltsR 005‐17 No

R 66‐16Sampling Asphalt MaterialsR 066‐16 Begin Review

R 77‐16Certifying Suppliers of Emulsified AsphaltR 077‐16 Begin Review

R 78‐16Recovering Residue from Emulsified Asphalt Using Low‐Termerature Evaporative Techniques

R 078‐16 Begin Review

T 50‐14 (2018)Float Test for Bituminous Materials D139‐12T 050‐14 (2018) No

T 59‐16Emulsified AsphaltsT 059‐16 Begin Review

T 72‐10 (2019)Saybolt ViscosityT 072‐10 (2019) No

T 78‐15 (2019)Distillation of Cutback Asphalt ProductsT 078‐15 (2019) No

T 79‐12 (2016)Flash Point with Tag Open‐Cup Apparatus for Use with Material Having a Flash Point Less Than 93ºC (200ºF)

T 079‐12 (2016) Begin Review

T 295‐13 (2017)Specific Gravity or API Gravity of Liquid Asphalts by Hydrometer Method D3142/D3142M‐11

T 295‐13 (2017) No

T 300‐11 (2016)Force Ductility Test of Asphalt MaterialsT 300‐11 (2016) Begin Review

T 301‐13 (2017)Elastic Recovery Test of Asphalt Materials by Means of a DuctilometerT 301‐13 (2017) No

T 302‐15 (2019)Polymer Content of Polymer‐Modified Emulsified Asphalt Residue and Asphalt BindersT 302‐15 (2019) No

T 361‐16Determining Asphalt Binder Bond Strength by Means of the Binder Bond Strength (BBS) Test

T 361‐16 Begin Review

T 382‐18Determining the Viscosity of Emulsified Asphalt by a Rotational Paddle ViscometerT 382‐18 No

Wednesday, January 23, 2019 Prepared for COMP by AASHTO Publications Production

COMP TS Planning Ahead—Provisional Standards TS 2aDesignation No. Title Planning NeededPub Yr. 1

MP 31‐17Materials for Cold Recycled Mixtures with Emulsified AsphaltMP 031‐17 Start Revise or 2‐Yr. Reconfirm Review2017

MP 36‐18Materials for Asphalt Tack CoatMP 036‐18 No2018

PP 86‐17Emulsified Asphalt Content of Cold Recycled Mixture DesignsPP 086‐17 Start Revise or 2‐Yr. Reconfirm Review2017

PP 93‐18Asphalt Tack Coat DesignPP 093‐18 No2018

Wednesday, January 2, 2019 Prepared for COMP by AASHTO Publications Production

AASHTO T59 Summary

Changes:

1. Editorial changes to spelling and formatting. Changing of numbering to reflect addition and deletion of methods

2. Clarification to the sampling and conditioning section 4

Addition of sample quantity (1 gallon) and sampling method AASHTO R66

3. Addition of hot plate evaporation of water to section 7 4. Addition of Rotation Paddle Viscosity to section 9

Reference to AASHTO T 382 (Rotational Paddle Viscometer)

5. Removal of full Saybolt Furol method from section 9.

Reference to AASHTO T 72 (Saybolt Furol) added to section 9

6. Addition of drying time and lowering of drying temperature of the sieve to 110 C to avoid overheating of the new solder (used in modern sieves) in section 12

7. Lowered oven temperature in section 13 to reflect drying oven temperature change in section 12

8. Removal of miscibility with water section 15 9. Removal of freezing test section 16

Emulsion Task Force (ETF)

AASHTO TSP2

History and Status Update

2008-Present

ETF

ETG & ETF – Founding Father

Jim Sorenson

PAVEMENT PRESERVATION EXPERTTASK GROUP

(PPETG) Established in 1991 by FHWA / Jim Sorenson

Promote the institutionalization of the concepts

of pavement preservation

Parent group of “Emulsion Task Force”

ETF - Formation

Emulsion Task Force (ETF)

Bridge Preservation Partnership




9 RegionalBridge & Pavement

Preservation Partnerships

ETF FormationETF now part of AASHTO TSP2

Idea conceived at AEMA-ISSA-ARRA meeting February 2008 under guidance of Jim Sorenson, FHWAIdentified need for industry expertise and

involvement in updating the state of the practice and participating in ongoing research activities pertaining to asphalt emulsions and finished product systemsFirst meeting in Newport Beach, CA April 7-8,

2008

ETF - Background

Advance the Effort to Develop Performance Based Methods & Specification for EmulsionsEncourage Adoption of Uniform

Performance Based National Standards● Const & Matls Specs, Design

Practice, Tests etc●QA Protocols for Materials and

Workmanship

EFT – Original Mission

Co-Chair- Colin Franco RIDOTCo-Chair- Chris Lubbers - Kraton Polymers

Members From: - Industry: AEMA/ ARRA/ ISSA/FP2

- Academia: CSU/ Tx A&M/ NC State- State DOT’s: TX, RI, MT, ME, IL- FHWA- National Center Pavement Preservation (NCPP)

ETF - Organization

Current Membership (2013 – Present)

ETF - Organization

Current Subcommittees (2013 – Present)1. Residue Recovery and Testing

● Arlis Kadrmas (Chair) BASF - AEMA

2. Design Group● Spray – Gary Hicks (Co-chair) - CSU● Mix – Jim Moulthrop (Co-chair) - Fugro FP2

3. Supplier Certification and Quality Assurance● Larry Galehouse ( Co Chair ) - NCPP● Colin Franco (Co-Chair) - RIDOT

4. Recycling Emulsions● Steve Cross - OK State U

5. Research● Darren Hazlett – UT Austin

SWG (Special Working Group) Mike Voth (FHWA Lands) - Cood the EAPG and other emulsion binder specifications

among all the subcommittee & among treatments

6. MarketingLarry Tomkins - Ergon

7. RejuvenatorsHassan Tabatabaee - Cargil

AASHTO – Deliverables (Pre 2013)

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)

AASHTO – Deliverables (Pre 2013)

6 Test methods for chip seals submitted to AASHTO SOM

Note: Test methods developed and compiled by S. Shuler through NCHRP 680

Best Practices Document (draft)●Original deliverable for Chip Seals and Micro

Surfacings.

Low Temperature Residue Recovery Method● Plan for Inter-lab Study and data collection

(ongoing) TP 72● Precision and bias study with AMRL for TP

72

Accomplishments- Pre 2013

Accomplishments – Draft EAPG Spec (Pre 2013)

Purpose Test Conditions ReportResidue Recovery Forced Draft Oven 24 hrs @ambient +

24 hrs @60ºC% Residue

Tests on Residue from Forced Draft OvenHigh Temperature DSR-MSCR

DSR freq sweepThTh

JnrG* & phase angle

Polymer Identifier(Elasticity/Durability)

DSR-MSCR Th @3200 Pa % Recoverable Strain

High Float Identifier (Bleeding)*

DSR –non-linearity

Th Test to be developed

Tests on PAV after Forced Draft Oven ResidueLow Temperature (Aged Brittleness)*

DSR freq sweep 10 & 20º C Model low T

G* Phase Angle

Polymer Degradation(Before/After PAV)*

DSR-MSCR Th @3200 Pa Recoverable Strain Ratio

Purpose Test Conditions ReportResidue Recovery Forced Draft Oven 24 hrs @ambient +

24 hrs @60ºC% Residue

Tests on Residue from Forced Draft OvenDSR-MSCRDSR freq sweep

ThTh

JnrG* & phase angle

Polymer Identifier(Elasticity/Durability)

DSR-MSCR Th @3200 Pa % Recoverable Strain

High Float Identifier (Bleeding)*

DSR –non-linearity

Th Test to be developed

Tests on PAV after Forced Draft Oven ResidueLow Temperature (Aged Brittleness)*

DSR freq sweep 10 & 20º C Model low T

G* Phase Angle

Polymer Degradation(Before/After PAV)*

DSR-MSCR Th @3200 Pa Recoverable Strain Ratio

Bending Beam Rheometer

Survey of PP Treatments Emulsion Product/System Survey Evaluation Conducted by Andrew Hanz of Univ. Wisconsin

Madison Identify/prioritize widely used Treatments

–Define 2 critical distresses and mechanism of failure for priority Treatments

–Determine testing needs–Existing Tests which are applicable –Research or new tests needed

Accomplishments -Emulsion Use and Performance Survey -Pre 2013

AASHTO JTF-Construction Specification

• 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.

Note: Larry Galehouse ( NCPP)– was instrumental in setting this up–working with AASHTO COMP, S.O. Maintenance, and S.O. Construction

Advance the Effort to Develop Performance Based Specification for Emulsion Binders (EAPG) by Special Working Group ( SWG).

Develop AASHTO STDs for all the Emulsion Treatments (listed on next slide)

● Materials Specs● Test Methods● Design Practices● Construction Guide Specs

Develop QA protocols and standards for all Emulsion Treatments

Research

ETF Reenergized Mission - 2013

SWG -Chair Mike Voth of FHWA is leading this effort

o Research and field studies being used for EAPG spec development.o TxDOT – Chip seals, Darren Hazlett with Dr. Amy Eppso NCHRP project 9-50 – Dr. R. Kim at NC Stateo Federal Lands Chip Seal research by Dr. Gayle King

Development of EAPG Specification for Emulsions using Superpave Principles

Note 1. EAPG – Emulsion Asphalt Performance GradedNote 2. This work will supplement the TxDOT SPG spec currently at the AASHTO SOM.

Draft EAPG specification reviewed by the ETF – Dec. 2018.

Draft EAPG forwarded for review by AASHTO COMP –Dec 2018

NCHRP Project 9-63 will validate EAPG Spec. Draft ETF spec is part of the proposal.

Development of EAPG Specification for Emulsions using Superpave Principles

NOTE: TXDOT has conducted field trials with their SPG spec.

Draft E/SPG Specification (2018)

Chip SealMicro SurfacingTack CoatFog SealScrub SealSand SealSlurry Seal

Foam Asphalt Stabilization

Thin Bonded Surface Treatment

Cold MixesoVirginoRecycledoCIR

AASHTO Standards for Emulsion TreatmentsTreatments Requiring Specs

A)

B) Existing Emulsion Binder Specs Revision to AASHTO M140, M208, M316

M 140, Published Fall 2016 M 208, Published

Fall 2016 M-316, Published

Fall 2016

Emulsion Binder SpecsRevamped & Revised

AASHTO STANDARDS

Emulsion Treatments M / MP T / TP R W/ SOM CommentsConstruction Guide Specs

Best Practices

Chip Seal MP27-16 PP82-16 NCHRP 14-37

Microsurfacing MP28-16 PP83-16 NCHRP 14-37

Tack Coat MP36-18 PP93-18

Fog Seal MP33-17 PP88-17 NCHRP 14-37

Scrub Seal Y** PP91-18

Sand Seal MP34-18 PP90-18

Slurry Seal MP32-17 PP87-17

Foam Asphalt Stabilization

Bonded Surface Treatments (Nova Chip) 2018

Cold Recycled Mixtures MP31-17 PP86-17 NCHRP 9-62

Legend

Emulsion Binder Standards M / MP T / TP R W/TRB M=Material Specs

Emulsified Asphalt M140-16 T=Test Methods

Cationic Emulsified Asphalt M208-16 R=Design Practices

Polymer-Modified Cationic Emulsified Asphalt M316-16 P=Provisional

Emulsion/Surface Performance Grades (E/SPG)NCHRP

9-63 =Draft STD Submitted to SOM

Y**=Tabled by ETF

Accomplishments – Emulsion Treatment StandardsStatus: AASHTO Emulsion STDs (2018)

Develop QA protocols for emulsion treatments starting with microsurfacing and chip seals

Education, Training, Certification

QA Protocols and Standards

Chip Seal QA Std. Completed Microsurfacing QA in Progress, on going

National Accepted Standardso Materials Specs, Test Methods, Design Practices,o Construction Specs, etc

QA Program – Materials and Workmanship:o Acceptance Testing (Agency)o QC - Quality Control (Contractor)o IA - Independent Assurance (Agency)o New Process / Product Acceptance Procedures

QA – Holistic Approach for all Emulsion Treatments

Workmanship QA Equipment Calibration Construction Operation Quality Plan Personnel Certification

MaterialsCertification Agency Acceptance Plans QC Plans (Contractor) Vendor Supplied Material Certifications Agency Calibration Monitoring Checklist

Education, Training, and Certification:◦ Define the training needs for Agency / Contactor

Staff◦ Education and Training Resources NCPP, NHI,

TCCC, and Industry◦ Certification Program for Contractor / Agency Field

Staff

Note: National Center for Pavement Preservation (NCPP) is taking the lead on education and training.

QA – Holistic Approach (cont.)

Successfully Initiated Research:1) NCHRP 14-37: Construction Spec for Chip Seal, Microsurfacing,

Fog Seal2) NCHRP 9-62: Cold Recycling Mixtures3) NCHRP 9-63: Emulsion Performance Grading

Problem Statements 20191) Construction Guide Specs – Slurry Seals and Tack Coats2) Emulsion based rejuvenating seals

Proposal to FHWA Office of Innovation & Implementation Implementation of ETF Deliverables – Start Using the AASHTO

Emulsion Treatment StandardsProgram for Validation EAPG Draft Spec

ETF Research

Now that the AASHTO Standards exist for most emulsion treatments, there is a need to:

Develop a marketing plan/marketing tools Promote the technology to

● Agencies● Industry● Academia – create course curricula

How should this be done?● Regional PP groups● AASHTO COMP, SO Maint, SO Hwy Design, ● AEMA-ISSA-ARRA meetings/conferences.

Promoting Use of Emulsion Standards Marketing

Marketing Subcommittee ( New):Chair – Larry Tomkins- Ergon

Questions…

?

Emulsion Task Force

I. Deliverables Status:

A. AASHTO Standards -2010 • Four Standards submitted to AASHTO for Adoption – 3 have been adopted

1. Standard Practice for Certifying Suppliers of Emulsified Asphalt – Provision (AASHTO Provisional Standards - PP 71)

2. Recovering Residue from Emulsified Asphalt using Low Temperature Evaporative Techniques – Provision (AASHTO Provisional Standards - PP 72)

3. Determining Asphalt Binder Bond Strength by Means of the Bitumen Bond Strength Test (BBS) – Provision (AASHTO Provisional Standards - PP 91)

4. Performance-Graded Asphalt Binder for Surface Treatments (Surface Performance Graded (SPG) Spec) – tabled

B. AASHTO Tests Standards - 2011 • Six Provisional Standards submitted to AASHTO subsequently tabled- now

being reviewed by ETF for resubmission.)

1. Test for Determining the Strain Sensitivity of Asphalt Emulsion Residue Using Strain Sweeps Performed on a Dynamic Shear Rheometer (DSR)

2. Test for Embedment Depth of Chip Seal Aggregates in the Lab and the Field

3. Test for Laboratory Chip Loss from Emulsified Asphalt Chip Seal 4. Test for Measuring Moisture Loss from Chip Seals 5. Test for Recovery of Asphalt from Emulsion by Stirred-Can Method 6. Test for Field Emulsion Viscosity

C. Low Temperature Residue Recovery Method – Precision and Bias

Study

1. Plan for Interlab Study and data collection (ongoing) PP 72 2. Precision and bias study with AASHTO Resource for TP 72

II. Status of AASHTO Standards 2015-2018:

A. Micro-surfacing

1. Micro Surfacing Design – AASHTO PP83-16 2. Materials for Micro Surfacing – AASHTO MP28-17 3. Construction Guide Spec (CGS) - NCHRP 10-92 W/ COMP 4. Best Practices - NCHRP 10-92 - In Progress

B. Chip Seal

1. Emulsified Asphalt Chip Seal Design Practice - AASHTO PP82-16 2. Materials for Emulsified Asphalt Chip Seal - AASHTO MP27-16 3. Construction Guide Spec (CGS) - NCHRP 10-92 – W/ AASHTO COMP 4. Best Practices - NCHRP 10-92 - In Progress

C. Emulsion Binder Specifications

1. M 140 – Revised to 2014 - Approved by AASHTO SOM 2. M 208 – Revised to 2014 - Approved by AASHTO SOM 3. M 316 – Revised to 2014 - Approved by AASHTO SOM

D. Slurry Seals

1. Materials Specifications - AASHTO MP 32-17 2. Design Practice - AASHTO PP 87-17 3. Construction guide specs - In Progress 4. Best Practices - In Progress

E. Fog Seals

1. Materials Specification - AASHTO MP 33-17 2. Design Practice - At AASHTO PP 88-17 3. Construction guide specs – W/AASHTO COMP 4. Best Practices - In Progress

F. CIR with Emulsion

1. Materials Specifications - AASHTO MP 31-17 2. Design Practice - AASHTO PP 86-17 3. Construction guide specs - In Progress NCHRP 9-62 4. Best Practices - In Progress

G. ULTRA THIN BONDED OVERLAY

1. Materials Specifications s -AASHTO for ballot 2. Design Practice - AASHTO for Ballot 3. Construction Guide Specs- To be developed 4. Best Practices- To be Developed

H. Tack Coat

1. Materials Specifications – AASHTO MP 36-18 2. Design Practice – AASHTO 93-18

3. Construction Guide Specs- To be developed 4. Best Practices-To be developed

I. Scrub Seals

1. Materials Specifications – AASHTO COMP (on hold). 2. Design Practice - AASHTO PP 91-18 3. Construction Guide Specs – To be developed. 4. Best Practices- To be developed.

J. Sand Seals

1. Materials Specifications-MP 34-18 2. Design Practice -PP 90-18 3. Construction Guide Spec- To be developed 4. Best Practices - To be developed

III. EMULSIFIED ASPHALT PERFORMANCE GRADED

BINDER SPEC

EAPG (Emulsified Asphalt Performance Graded)- Draft specification completed (also referenced in NCHRP 9-63 – A Calibrated and Validated National Performance- Related Specification for Emulsified Asphalt Binder). Additionally, it will be forwarded to AASHTO COMP for vetting and acceptance as an AASHTO Materials Specification..

IV. QA Protocols – Emulsion Treatments: • There are 4 parts being developed for the QA of Emulsion treatments

A. National Accepted Standards

1. Specs (Performance Specs) 2. Practices (Design Methods) Being developed (see previous) 3. Construction Guide Specs

B. Materials QA – Work by the Sub-Committee on

1. Acceptance Testing – Agency Acceptance Plans (Agency) 2. QC - Quality Control Plans (Contractor) 3. IA - Independent Assurance (Agency) 4. New Process / Product Acceptance Procedures – Working with NTPEP

C. Materials Certification

1. Agency Acceptance Plans for materials and workmanship 2. Vendor Supplied Material Certifications

D. Education and Training

1. Define the training needs for Agency / Contactor Staff 2. Education and Training Resources

NHI TCCC Industry Sponsored Training

3. Certification Program for Contractor, Agency, Field Staff National Center for Pavement Preservation

V. CONSTRUCTION GUIDE SPECIFICATIONS- JOINT TASK FORCE

1. An AASHTO Joint Task Force consisting of an AASHTO Joint Task Force

consisting of the Committee on Materials and Pavements (COMP), Committee on Maintenance (COM), and Committee on Construction (COC) was created to vet and approve construction guide specs at the request of the ETF. Larry Galehouse (NCPP), George Connors (AASHTO Committee on Maintenance) took the lead and were instrumental in getting this initiative going and made sure that it became a reality.

2. The Construction guide specs for Chip seal, Micro surfacing and Fog seal developed by Shuler, Hicks and Moulthrop under NCHRP 14-37 have been submitted to the Joint Task Force.

VI. RESEARCH INITIATIVES

A. NCHRP – research projects submitted by ETF 1. 14-37 Construction guide specs for Chipseal, Microsurfacing and Fog

seal. - Completed 2. 20-50(18)- CIR, FDR and CCPR reclamation specifications and test

methods. - Ongoing 3. 9-63 Performance Grade Specification for Emulsion Binders. -

Ongoing

B. New Research Proposals to TRB/ NCHRP for: 1. Rejuvenating Sealers in Emulsions 2. Construction Guide Specs for Tack coat and Slurry seals

C. FHWA Research Proposal

1. Proposal for implementation of emulsion treatments using new AASHTO standards, forwarded for Consideration by FHWA Implementation and Innovation programs.

D. EAPG Limited Validation Testing

Asphalt Emulsion testing was/is being conducted by several Emulsion Labs to Calibrate/validate certain tenets of the EAPG specification. This effort is being coordinated by the Asphalt Institute and funded by Hussey Asphalt of Canada. By: Colin A. Franco January 2019

committee on materials & pavements · clarification to section 4 for test quantities. update to...

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