Aging and Rejuvenators
Innovative Research in Asphalt Pavements
Update on SHRP2 Renewal 26 Pavement Preservation Showcase Project:
Massachusetts Route 3 Northbound
Northeast Pavement Preservation Partnership 2017 Annual Meeting Tuesday May 9th, 2017 • Portland, Maine By:
Dr. Walaa S. Mogawer, P.E. Highway Sustainability Research Center University of Massachusetts Dartmouth
Research Team Name
Institute
Ed Naras
Pavement Management Engineer - MassDOT
Alexander J. Austerman, P.E. Senior Research Engineer - UMass HSRC
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Strategic Highway Research Program 2 (SHRP2) Four (4) Broad Areas of Emphasis 1. Highway Safety 2. Renewal 3. Reliability 4. Capacity
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Strategic Highway Research Program 2 (SHRP2) Renewal Focus Area “Develop design and construction methods that cause minimal disruption to the traveling public and produce long-lived facilities to renew the aging highway infrastructure”
Product Addresses Bridges, nondestructive testing techniques, pavements, project delivery, utilities, and railroads
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
SHRP2 Renewal Product (R26)
The renewal product (R26) developed under SHRP2 was “Preservation Approaches for High Traffic Volume Roadways.”
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
SHRP2 R26 Pavement Preservation For High Volume Roadways HMA Pavement Preservation Treatments/Strategies Crack Filling Crack Sealing Microsurfacing Chip Seals Ultra-thin Bonded Wearing Course (UTBO) x3 Thin HMA Overlay Cold milling and overlay Ultrathin HMA Overlay Hot In Place HMA recycling Cold In Place HMA recycling Profile Milling Ultra-thin Whitetopping
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
SHRP2 R26 Through the Solutions Implementation Assistance Program initiative, MassDOT served as a “lead adopter” by hosting a pilot project to implement some of the strategies identified in Product R26. Strategies consisted of three different Ultrathin Bonded Overlays mixtures (Control, Asphalt Rubber and Polymer Modified Binder) and four fog seals for shoulders (Control, Maltene, Gilsonite and Polymer).
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
MassDOT Pilot Project Route 3 Northbound Burlington - Tyngsboro Ideal Candidate for Pavement Preservation - Minor cracking - Light surface raveling - Recent crack sealing to fill joints - Early signs of block cracking
- UTBO mixtures for travel lanes (1 million SY) - Fog seals for shoulders (400,000 SY) - Paving only the travel lanes reduced the duration of construction and disruption to the travelling public. Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
MassDOT Pilot Project Focus Evaluate the impact of binders used on the performance of the UTBO thin overlay pavement treatments. Evaluate the effectiveness of fog seals on paved shoulders.
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
MassDOT Pilot Project Treatments/Strategies Ultrathin Bonded Overlays (UTBO) UTBO with PG 64-28 Binder (Control) UTBO with PG 58-28 Asphalt Rubber Binder (Rec.) UTBO with PG 64V-28 Binder (Polymer Modified) Maltene Rejuvenator Seal (Breakdown Lane) Asphalt fog seal compared to rejuvenating seals “Green Chemistry” Rejuvenator Fog Seal Delta S, a “Green Chemistry Rejuvenator” Fog Seals (High Speed Shoulder Only) CRS-2 (Unmodified Emulsified Binder) Gilsonite Emulsion CRS-2Pd (Polymer Modified Emulsified Binder) Texture added to breakdown lane & shoulders Skidabrader and Boiler Slag “aka Black Beauty” Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
6/2/2017
| Leading the Nation in Transportation Excellence | www.mass.gov/massdot
Ultrathin Bonded Overlays (UTBO) SHRP 2 R26 Definition “Also known as an ultra-thin friction course, an ultra-thin bonded wearing course may be used as an alternative treatment to chip seals, microsurfacing, or thin HMA overlays. It consists of a gap-graded, polymer modified HMA layer (0.4 to 0.8 inch thick) placed on a tack coat (heavy, polymer-modified emulsified asphalt). It is effective at treating minor surface distresses and increasing surface friction.”
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
UTBO: “Spray Paver”
Placement of a heavy application (0.18 to 0.25 gal/sq.yd) of polymer modified emulsion immediately followed by a 5/8 to ¾-in gap-graded hot mix overlay. Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Laboratory Evaluation of Each UTBO Mixture Plant Produced Mixture - Rutting & Moisture Susceptibility - Reflective Cracking - Intermediate Temperature Cracking - Low Temperature Cracking - Properties After Extended Aging (Short vs Long Term) Extracted & Recovered Binder from Plant Produced Mixture - Rutting - Rheological Properties (Black Space Diagrams)
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
UTBO Mixture Design & Specification Sieve Size 3/4" 1/2" 3/8" No. 4 No. 8 No. 16 No. 30 No. 50 No. 100 No. 200
MassDOT Sieve JMF Specification Size 19.0 mm 100 100 12.5 mm 96 92-100 9.5 mm 69 55-90 4.75 mm 37 24-41 2.36 mm 26 21-33 1.18 mm 18 15-26 0.600 mm 13 11-20 0.300 mm 10 8-16 0.150 mm 7 5-10 0.075 mm 3.5 4-7
Binder Content UTBO Control & UTBO PM = 4.8% (Spec. 4.8-5.2%) Binder Content UTBO AR = 5.8% (Spec. 5.8-6.2%) Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Mixture Aging Procedures Short-Term Oven Aging (STOA) Plant produced mixture utilized. Mixture was brought to compaction temperature with no additional aging. Long-Term Oven Aging (LTOA) LTOA was conducted as outlined in a study by Braham et al. (2009) which determined it better simulated field aging. Specimens of each plant produced mixture were aged at 135°C (275°F) for 24 hours in a loose state.
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Rutting/Moisture Susceptibility Hamburg Wheel Tracking Device (HWTD) • HWTD testing conducted in accordance with AASHTO T324
• Water temperature of 50ºC (122ºF) • Test duration of 20,000 passes
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Stripping Inflection Point (SIP) 0
Stripping Inflection Point (SIP)
-2 -4
Rut Depth (mm)
-6 -8 -10 -12 -14
Number of Passes to Stripping Inflection Point (SIP)
-16 -18
Number of Passes Failure, N f
-20 0
2,000
4,000
6,000
8,000
10,000
12,000
14,000
16,000
Number of Passes
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
18,000
20,000
HWTD Results
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Reflective Cracking - Overlay Tester - Test Temperature = 25ºC (77ºF) - Test Termination at 1,200 cycles or 93% Load reduction - Testing in accordance with Tex-248-F
Generally, larger number of cycles to failure indicates better Diagram from: Zhou et al. “Overlay Tester: Simple Performance Test for Fatigue Cracking” Transportation Research Record: Journal of the reflective cracking resistance. Transportation Research Board, No. 2001, Transportation Research Board of the National Academies, Washington, D.C., 2007, pp. 1–8.
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Overlay Tester Results – STOA
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Overlay Tester Results – LTOA
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Intermediate Temperature Cracking Illinois Flexibility Index Test (I-FIT) Using the SCB • I-FIT testing conducted in accordance with standard protocols developed recently at Illinois Center for Transportation study R27-128 • Test temperature of 25ºC (77ºF) • Load applied along the vertical diameter of the specimen at a displacement rate of 50 mm/min • Fracture energy and Flexibility Index (FI) were calculated and recorded for each mixture Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Flexibility Index (FI) 𝐹𝐹𝐹𝐹 = 𝐴𝐴 ×
𝐺𝐺𝑓𝑓
𝑎𝑎𝑎𝑎𝑎𝑎(𝑀𝑀)
Where: Gf = fracture energy in Joules/m2, calculated from Work of Fracture (Wf) M = slope of the post-peak curve at the inflection point in kN/mm A = unit conversion factor and scaling coefficient (0.01).
FI values less than 8.0 were shown to belong to mixtures with poor field and laboratory performance (Al-Qadi, et al. 2015). Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
IFIT Results – STOA
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
IFIT Results – LTOA
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Low Temperature Cracking Disc Shaped Compact Tension DC(T)
• DC(T) testing conducted in accordance with ASTM D7313 • Test temperature of -18ºC which is 10ºC warmer than low temperature PG grade Suggested Minimum Fracture Energy Thresholds: >460 J/m2 - Low & Medium Traffic >690 J/m2 - High Traffic Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
DC(T) Results – STOA
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
DC(T) Results – LTOA
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Mixture Binder Extraction & Recovery - Plant produced mixture binder was extracted and recovered for binder testing and determination of rheological properties.
ASTM D2172 - Standard Test Methods for Quantitative Extraction of Asphalt Binder from Asphalt Mixtures ASTM D7906 - Standard Practice for Recovery of Asphalt from Solution Using Toluene and the Rotary Evaporator
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
MSCR Testing - Testing in accordance with AASHTO T350 “Standard Method of Test for Multiple Stress Creep Recovery (MSCR) Test of Asphalt Binder Using a Dynamic Shear Rheometer (DSR).” - Test temperature of 64°C.
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
MSCR Results
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Rheological Parameters – Black Space Diagram
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Fog Seals for Shoulders – Testing In Progress - Collection of field cores from shoulders (prior & post fog seal application) - Extract and recover binder from cores application - Determine rheological properties - Determine effect of fog seal rejuvenators on binder rate of aging
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Discussion • Performance was similar between UTBO mixtures for the tests conducted. These trends required further field validation as service time increases. • MSCR testing of extracted and recovered mixture binders indicated reduced performance for the UTBO control binder. • The rheological plots indicated that the rate of aging might be similar for the three types of UTBO.
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Innovative Research in Asphalt Pavements
NETC 06-4: Preventive Maintenance and Timing of Applications
Northeast Pavement Preservation Partnership 2017 Annual Meeting Tuesday May 9th, 2017 • Portland, Maine
By: Dr. Walaa S. Mogawer, P.E. Professor of Civil & Environmental Engineering Highway Sustainability Research Center University of Massachusetts Dartmouth
Project Scope To research existing best practices for pavement preventative maintenance strategies and adapt them to the unique variety of road conditions in New England. Outline pavement maintenance techniques and the inter-relationship with the timing of their application in New England. Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Project Objectives Develop a pavement preventive maintenance implementation manual for agencies within the New England states. Identify components of a pavement preventive maintenance program. Evaluate techniques that have been successfully used to costeffectively extend pavement life. Identify and quantify factors that influence the success of preventive maintenance. Determine the approximate cost of preventive maintenance techniques.
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Preventive Maintenance
Relationship between pavement condition and the timing of varies categories of pavement treatments (Peshkin et al. 2011). Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Survey Results: Summary of New England Pavement Management Practices
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Survey Results: Reported strengths and weaknesses of New England PPM programs
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Survey Results: Asphalt and composite pavement treatments used by New England SHAs
Most Common Treatments Used by New England SHAs
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Survey Results: New England SHA Methods for PPM Project Selection
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
OPTime Program • The OPTime tool is a Visual Basic Application (VBA)driven Microsoft® Excel workbook that includes a simple analysis method for choosing the most effective treatment timing based on user-chosen timing scenarios (Peshkin et al. 2004). • Example illustrations of OPTime analysis conducted for two New England PPM projects as part of study.
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Project Status • Second draft of final report currently under review by project technical committee. • Report to be finalized once comments received and incorporated. • Final print copies to be made and supplied to NETC for distribution.
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Thank you!
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
https://www.fhwa.dot.gov/goshrp2/Solutions/
Update on SHRP2 Renewal 26 Pavement Preservation Showcase Project:
Massachusetts Route 3 Northbound
Northeast Pavement Preservation Partnership 2017 Annual Meeting Tuesday May 9th, 2017 • Portland, Maine By:
Dr. Walaa S. Mogawer, P.E. Highway Sustainability Research Center University of Massachusetts Dartmouth
Research Team Name
Institute
Ed Naras
Pavement Management Engineer - MassDOT
Alexander J. Austerman, P.E. Senior Research Engineer - UMass HSRC
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Strategic Highway Research Program 2 (SHRP2) Four (4) Broad Areas of Emphasis 1. Highway Safety 2. Renewal 3. Reliability 4. Capacity
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Strategic Highway Research Program 2 (SHRP2) Renewal Focus Area “Develop design and construction methods that cause minimal disruption to the traveling public and produce long-lived facilities to renew the aging highway infrastructure”
Product Addresses Bridges, nondestructive testing techniques, pavements, project delivery, utilities, and railroads
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
SHRP2 Renewal Product (R26)
The renewal product (R26) developed under SHRP2 was “Preservation Approaches for High Traffic Volume Roadways.”
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
SHRP2 R26 Pavement Preservation For High Volume Roadways HMA Pavement Preservation Treatments/Strategies Crack Filling Crack Sealing Microsurfacing Chip Seals Ultra-thin Bonded Wearing Course (UTBO) x3 Thin HMA Overlay Cold milling and overlay Ultrathin HMA Overlay Hot In Place HMA recycling Cold In Place HMA recycling Profile Milling Ultra-thin Whitetopping
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
SHRP2 R26 Through the Solutions Implementation Assistance Program initiative, MassDOT served as a “lead adopter” by hosting a pilot project to implement some of the strategies identified in Product R26. Strategies consisted of three different Ultrathin Bonded Overlays mixtures (Control, Asphalt Rubber and Polymer Modified Binder) and four fog seals for shoulders (Control, Maltene, Gilsonite and Polymer).
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
MassDOT Pilot Project Route 3 Northbound Burlington - Tyngsboro Ideal Candidate for Pavement Preservation - Minor cracking - Light surface raveling - Recent crack sealing to fill joints - Early signs of block cracking
- UTBO mixtures for travel lanes (1 million SY) - Fog seals for shoulders (400,000 SY) - Paving only the travel lanes reduced the duration of construction and disruption to the travelling public. Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
MassDOT Pilot Project Focus Evaluate the impact of binders used on the performance of the UTBO thin overlay pavement treatments. Evaluate the effectiveness of fog seals on paved shoulders.
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
MassDOT Pilot Project Treatments/Strategies Ultrathin Bonded Overlays (UTBO) UTBO with PG 64-28 Binder (Control) UTBO with PG 58-28 Asphalt Rubber Binder (Rec.) UTBO with PG 64V-28 Binder (Polymer Modified) Maltene Rejuvenator Seal (Breakdown Lane) Asphalt fog seal compared to rejuvenating seals “Green Chemistry” Rejuvenator Fog Seal Delta S, a “Green Chemistry Rejuvenator” Fog Seals (High Speed Shoulder Only) CRS-2 (Unmodified Emulsified Binder) Gilsonite Emulsion CRS-2Pd (Polymer Modified Emulsified Binder) Texture added to breakdown lane & shoulders Skidabrader and Boiler Slag “aka Black Beauty” Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
6/2/2017
| Leading the Nation in Transportation Excellence | www.mass.gov/massdot
Ultrathin Bonded Overlays (UTBO) SHRP 2 R26 Definition “Also known as an ultra-thin friction course, an ultra-thin bonded wearing course may be used as an alternative treatment to chip seals, microsurfacing, or thin HMA overlays. It consists of a gap-graded, polymer modified HMA layer (0.4 to 0.8 inch thick) placed on a tack coat (heavy, polymer-modified emulsified asphalt). It is effective at treating minor surface distresses and increasing surface friction.”
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
UTBO: “Spray Paver”
Placement of a heavy application (0.18 to 0.25 gal/sq.yd) of polymer modified emulsion immediately followed by a 5/8 to ¾-in gap-graded hot mix overlay. Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Laboratory Evaluation of Each UTBO Mixture Plant Produced Mixture - Rutting & Moisture Susceptibility - Reflective Cracking - Intermediate Temperature Cracking - Low Temperature Cracking - Properties After Extended Aging (Short vs Long Term) Extracted & Recovered Binder from Plant Produced Mixture - Rutting - Rheological Properties (Black Space Diagrams)
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
UTBO Mixture Design & Specification Sieve Size 3/4" 1/2" 3/8" No. 4 No. 8 No. 16 No. 30 No. 50 No. 100 No. 200
MassDOT Sieve JMF Specification Size 19.0 mm 100 100 12.5 mm 96 92-100 9.5 mm 69 55-90 4.75 mm 37 24-41 2.36 mm 26 21-33 1.18 mm 18 15-26 0.600 mm 13 11-20 0.300 mm 10 8-16 0.150 mm 7 5-10 0.075 mm 3.5 4-7
Binder Content UTBO Control & UTBO PM = 4.8% (Spec. 4.8-5.2%) Binder Content UTBO AR = 5.8% (Spec. 5.8-6.2%) Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Mixture Aging Procedures Short-Term Oven Aging (STOA) Plant produced mixture utilized. Mixture was brought to compaction temperature with no additional aging. Long-Term Oven Aging (LTOA) LTOA was conducted as outlined in a study by Braham et al. (2009) which determined it better simulated field aging. Specimens of each plant produced mixture were aged at 135°C (275°F) for 24 hours in a loose state.
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Rutting/Moisture Susceptibility Hamburg Wheel Tracking Device (HWTD) • HWTD testing conducted in accordance with AASHTO T324
• Water temperature of 50ºC (122ºF) • Test duration of 20,000 passes
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Stripping Inflection Point (SIP) 0
Stripping Inflection Point (SIP)
-2 -4
Rut Depth (mm)
-6 -8 -10 -12 -14
Number of Passes to Stripping Inflection Point (SIP)
-16 -18
Number of Passes Failure, N f
-20 0
2,000
4,000
6,000
8,000
10,000
12,000
14,000
16,000
Number of Passes
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
18,000
20,000
HWTD Results
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Reflective Cracking - Overlay Tester - Test Temperature = 25ºC (77ºF) - Test Termination at 1,200 cycles or 93% Load reduction - Testing in accordance with Tex-248-F
Generally, larger number of cycles to failure indicates better Diagram from: Zhou et al. “Overlay Tester: Simple Performance Test for Fatigue Cracking” Transportation Research Record: Journal of the reflective cracking resistance. Transportation Research Board, No. 2001, Transportation Research Board of the National Academies, Washington, D.C., 2007, pp. 1–8.
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Overlay Tester Results – STOA
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Overlay Tester Results – LTOA
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Intermediate Temperature Cracking Illinois Flexibility Index Test (I-FIT) Using the SCB • I-FIT testing conducted in accordance with standard protocols developed recently at Illinois Center for Transportation study R27-128 • Test temperature of 25ºC (77ºF) • Load applied along the vertical diameter of the specimen at a displacement rate of 50 mm/min • Fracture energy and Flexibility Index (FI) were calculated and recorded for each mixture Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Flexibility Index (FI) 𝐹𝐹𝐹𝐹 = 𝐴𝐴 ×
𝐺𝐺𝑓𝑓
𝑎𝑎𝑎𝑎𝑎𝑎(𝑀𝑀)
Where: Gf = fracture energy in Joules/m2, calculated from Work of Fracture (Wf) M = slope of the post-peak curve at the inflection point in kN/mm A = unit conversion factor and scaling coefficient (0.01).
FI values less than 8.0 were shown to belong to mixtures with poor field and laboratory performance (Al-Qadi, et al. 2015). Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
IFIT Results – STOA
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
IFIT Results – LTOA
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Low Temperature Cracking Disc Shaped Compact Tension DC(T)
• DC(T) testing conducted in accordance with ASTM D7313 • Test temperature of -18ºC which is 10ºC warmer than low temperature PG grade Suggested Minimum Fracture Energy Thresholds: >460 J/m2 - Low & Medium Traffic >690 J/m2 - High Traffic Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
DC(T) Results – STOA
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
DC(T) Results – LTOA
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Mixture Binder Extraction & Recovery - Plant produced mixture binder was extracted and recovered for binder testing and determination of rheological properties.
ASTM D2172 - Standard Test Methods for Quantitative Extraction of Asphalt Binder from Asphalt Mixtures ASTM D7906 - Standard Practice for Recovery of Asphalt from Solution Using Toluene and the Rotary Evaporator
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
MSCR Testing - Testing in accordance with AASHTO T350 “Standard Method of Test for Multiple Stress Creep Recovery (MSCR) Test of Asphalt Binder Using a Dynamic Shear Rheometer (DSR).” - Test temperature of 64°C.
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
MSCR Results
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Rheological Parameters – Black Space Diagram
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Fog Seals for Shoulders – Testing In Progress - Collection of field cores from shoulders (prior & post fog seal application) - Extract and recover binder from cores application - Determine rheological properties - Determine effect of fog seal rejuvenators on binder rate of aging
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Discussion • Performance was similar between UTBO mixtures for the tests conducted. These trends required further field validation as service time increases. • MSCR testing of extracted and recovered mixture binders indicated reduced performance for the UTBO control binder. • The rheological plots indicated that the rate of aging might be similar for the three types of UTBO.
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Innovative Research in Asphalt Pavements
NETC 06-4: Preventive Maintenance and Timing of Applications
Northeast Pavement Preservation Partnership 2017 Annual Meeting Tuesday May 9th, 2017 • Portland, Maine
By: Dr. Walaa S. Mogawer, P.E. Professor of Civil & Environmental Engineering Highway Sustainability Research Center University of Massachusetts Dartmouth
Project Scope To research existing best practices for pavement preventative maintenance strategies and adapt them to the unique variety of road conditions in New England. Outline pavement maintenance techniques and the inter-relationship with the timing of their application in New England. Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Project Objectives Develop a pavement preventive maintenance implementation manual for agencies within the New England states. Identify components of a pavement preventive maintenance program. Evaluate techniques that have been successfully used to costeffectively extend pavement life. Identify and quantify factors that influence the success of preventive maintenance. Determine the approximate cost of preventive maintenance techniques.
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Preventive Maintenance
Relationship between pavement condition and the timing of varies categories of pavement treatments (Peshkin et al. 2011). Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Survey Results: Summary of New England Pavement Management Practices
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Survey Results: Reported strengths and weaknesses of New England PPM programs
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Survey Results: Asphalt and composite pavement treatments used by New England SHAs
Most Common Treatments Used by New England SHAs
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Survey Results: New England SHA Methods for PPM Project Selection
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
OPTime Program • The OPTime tool is a Visual Basic Application (VBA)driven Microsoft® Excel workbook that includes a simple analysis method for choosing the most effective treatment timing based on user-chosen timing scenarios (Peshkin et al. 2004). • Example illustrations of OPTime analysis conducted for two New England PPM projects as part of study.
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Project Status • Second draft of final report currently under review by project technical committee. • Report to be finalized once comments received and incorporated. • Final print copies to be made and supplied to NETC for distribution.
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
Thank you!
Northeast Pavement Preservation Partnership Portland, ME ♦ May 9th, 2017
https://www.fhwa.dot.gov/goshrp2/Solutions/
