Pavement Preservation ODOT Leading the Way

Transcription

1 2016 Ohio Transportation Engineering Conference Pavement Preservation ODOT Leading the Way Tim Herbst Cell :

2 Introductory Video

3 Governmental Agency Challenges Limited knowledge of current solutions and new technologies In school you were taught how to build it, but not how to maintain what has been built. We do what we do because that is the way we have always done it Relationships Politics

4 Governmental Agency Challenges Decreased or Change to Road Budgets Same Amount of Miles if t More, and the Cost of Everything Has Gone Up Going Back to Gravel Bottom of Barrel Funding We ll see how much we have left over after we see how much salt we use

5 Governmental Agency Challenges Asphalt Specifications Range of Acceptability Asphalt Prices $60 - $80 / ton or $130 - $170 / CY Southwest and Central Ohio $80 - $110 / ton or $160 - $220 / CY rtheast, rthwest, Southeast Ohio

6 FHWA Pavement Preservation Guidelines Pavement Preservation A program employing a network level, long-term strategy that enhances pavement performance by using an integrated, cost-effective set of practices that extends pavement life, improves safety and meets motorist expectations."

7 FHWA Pavement Preservation Guidelines Pavement Maintenance A planned strategy of cost-effective treatments to an existing roadway system that preserves the system, retards future deterioration, and maintains or improves the functional condition of the system (without significantly increasing the structural capacity)."

8 FHWA Pavement Preservation Guidelines

9 Crack Seal Proactive and Preparatory Durapatcher Applications Mastic Surface Treatments Chip Seal Surface Treatments w/o Fog Seal Chip Seal Interlayers Micro Surfacing Thin Hot Mix Asphalt Overlays

10 ODOT Pavement Maintenance Studies Crack Sealing Chip Seal Micro Surfacing Thin Hot Mix Overlays

11 Overband Crack Seal ODOT Spec #423

12 Overband Crack Seal PG Type 1 Blocked with 18% Rubber

13 Overband Crack Seal PG Type 2 Liquid with 5% Polyester field mixed Fibers Type 3 Liquid with 7% Polypropylene field mixed Fibers Type 4 Blocked with 2% Polyester Fibers contained within Block

14 Overband Crack Seal PG Polyester and Polypropylene Fibers

15 Overband Crack Seal - Blocked 5,000 lbs. / 7 ft. / lb..

16 Overband Crack Seal - Liquid 7,000 lbs. / 5 ft. / lb..

17 Overband Crack Seal - Bad

18 Overband Crack Seal - Good

19 Overband Crack Seal Spec Details Do t Install Below 45 Degrees What time of year is the best time to seal? Do t Install When There is Visible Moisture Only Seal (¼ 1 ) Wide Cracks Install Between 2-4 Wide Should t Be Thicker than 3/16

20 ODOT Pavement Maintenance Study Crack Seal State Job # Started in 2000 Ended in Items of Interest 1. Do existing Crack Sealing practices enhance pavement performance? 2. Under what are the conditions did Crack Sealing yield enhanced performance? 3. What is the optimum timing for Crack Sealing?

21 ODOT Pavement Maintenance Study Crack Seal State Job # Product Installation Time Period 2000 to test sections, including control sections, were set up across the state Conclusions 1. Average Performance Gain was 2 to 7 PCR points. Overall average about Additional Service Life of up to 3.7 Years (Depending on Pavement Type). 3. Maximum Effectiveness was obtained with PCR values between 66 and 80.

22 ODOT Pavement Maintenance Study Crack Seal State Job # Industry Opinion 1. Historically, optimum performance has been realized when pavements are Crack Sealed somewhere in the first 5 years after the new pavement has been installed. 2. Many studies suggest by Crack Sealing within this timeframe, an additional 5 years of pavement life will be obtained. 3. Crack Sealing at a PCR value of 66, when 1/3 of the pavements life is over, will be economically viable to buy time, but maximum long term performance will be realized with higher pavement PCR values.

23 Chip Seal ODOT Spec #422

24 Chip Seal Polymerized Asphalt Emulsion gallons/sy ( is typical) Anionic Neg. (-)Charge RS-2 RS-2P HFRS-2P Cationic Pos. (+) Charge CRS-2 CRS-2P SAM-C

25 Chip Seal Cover Aggregate lbs./sy #9 or ¼ #8 or ½ Crushed Limestone - Porous Slag - Durable Natural Gravel Economical

26 ODOT Pavement Maintenance Study Chip Seal State Job # Chip Seal Jobs Monitored Predominately in 3 of the 12 ODOT Districts 3 Items of Interest 1. Chip Seal Treatment Effectiveness 2. Extension of Pavement Life by Utilizing Chip Seal 3. Optimal Time and Pavement Condition to Chip Seal

27 ODOT Pavement Maintenance Study Chip Seal State Job # Monitored Time Period 1999 to 2006 Measured against previous study on Thin HMA cost benefit ratio Conclusions 1. Cost-effective Maintenance Treatment when used at the right time. 2. Pavement Life Extension averaged 3-5 years, with some lasting 7 years. 3. Maximum Effectiveness was obtained with PCR values between 66 and 80.

28 Micro Surfacing ODOT Spec #421

29 Micro Surfacing Polymerized Asphalt Emulsion Natural Latex - SBR CSS-1hm Limestone Aggregate 3/8 to P200 s Breaking and Setting Additives Chemical Break and Cure Speed Up or Slow Down Portland Cement Cohesiveness

30 Micro Surfacing Truck Mount Unit

31 Micro Surfacing Continuous Unit

32 Micro Surfacing Video

33 Overband Crack Seal and Micro Surfacing

34 Polymerized Chip Interlayer and Micro Surfacing

35 3 Centerline Repair

36 Skid Correction In-Between Lane Lines

37 Wheel Path Rut Fill 5 in width Rut Box Fills Ruts up 1 ½ 2 in depth Followed by Surface Course

38 Micro Surfacing Spec Details Install when Temps are 45 degrees and rising May 1st to September 30th months of application Continuous machine used on projects over 15,500 sy Single Course Application is now 21 to 24 lbs. / sy

39 Micro Surfacing Spec Details Acceptance The pavement is free from excessive scratch marks, tears, rippling and other surface irregularities, longitudinal joints and lane edges coincide with any lane lines and edge lines and transverse joints are uniform, neat and provide a smooth transition.

40 ODOT Pavement Maintenance Study Micro Surfacing State Job # Micro Surfacing Jobs Monitored Jobs were in all 12 ODOT Districts General and Priority Routes Were Differentiated 3 Items of Interest 1. Micro Surfacing Treatment Effectiveness 2. Extension of Pavement Life by Utilizing Micro Surfacing 3. Optimal Time and Pavement Condition to Micro Surfacing

41 ODOT Pavement Maintenance Study Micro Surfacing State Job # General System Routes (Single Course) Measured against previous study on Thin HMA cost benefit ratio Conclusions 1. Cost-effective Maintenance Treatment when used at the right time. 2. Pavement Life Extension of Nine (9) Years. 3. Maximum Effectiveness was obtained with PCR values between Champion Wood County US 6 Micro Surfacing in 1999 and still on the ground

42 ODOT Pavement Maintenance Study Micro Surfacing State Job # Priority System Routes (Double Course) Measured against previous study on Thin HMA cost benefit ratio Conclusions 1. Cost-effective Maintenance Treatment when used at the right time. 2. Pavement Life Extension of Eight (8) Years. 3. Maximum Effectiveness was obtained with PCR values between Champion Franklin County SR 161 Micro Surfacing in 2004 and was just paved

43 ODOT Pavement Maintenance Study Thin Hot Mix Asphalt Overlay (Prior to 2006) $66,358 / lane mile Pavement Life Expectancy 9 Years Conclusions 1. Micro Surfacing (Priority / Double Course) - $26,350 / lane mile and PLE 8 Years 2. Micro Surfacing (General / Single Course) - $17,450 / lane mile and PLE 9 Years 3. Chip Seal - $11,500 / lane mile and PLE 3 to 5 Years up to 7 Years

44 ODOT Decision Trees General System Decision Tree Office of Pavement Engineering All General System Bin G131 Pavements Activity 60 (2)JRCP or PCR>=70 (1)CRC? Low Volume Pavements ADT<2500 and ADTT<250 Bin G130 Do thing PCR>=80 Bin G100 Do thing Version E LEGEND Severity Levels L Low M Medium H High Extent Levels O Occasional F Frequent E Extensive Urban System Decision Tree Office of Pavement Engineering All Urban System Pavements LEGEND Severity Levels L Low M Medium H High Pavement Type (4) Composite Pavements Bin G113 Activity 30, 31, 38 or 50 Distress Check C (1)Raveling=MF,ME,HF,HE or (2)Bleeding=HF,HE or (3)Patching=LF,LE,MF,ME,HF,HE or (4)Surface Debond=LF,LE,MO,MF,ME,HO,HF,HE or (5)Rutting=ME,HF,HE or (9)Trans. Crk (Unjointed)=MF,ME,HF,HE or (10)Joint Refl. Crk=MF,ME,HF,HE or (11)Intermediate Crk=MF,ME,HF,HE (16)Corner Breaks=MO,MF,ME,HO,HF,HE or (17)Punchouts=MO,MF,ME,HO,HF,HE PCR<55 Bin G104 Pavement Type (3)Flexible or Activity 60 Str.Ded.>=20 (4)Composite PCR<55 Bin G101 or Activity 60 Bin G105 Str.Ded.>=20 PCR<65 Activity 60 Distress Check B Bin G102 PCR<65 Activity 60 (1)Raveling=HF,HE or (2)Bleeding=MF,ME,HF,HE or (3)Patching=ME,HF,HE or (4)Surface Debond=LF,LE,MF,ME,HF,HE or (6)Rutting=MF,ME,HF,HE or (15)Potholes=LF,LE,MF,ME,HF,HE or Distress Check A (9)Wheel Track Crk=ME,HF,HE or (10)Block & Trans Crk=HE or (1)Raveling=HF,HE or (12)Edge Cracking=ME,HE or (2)Bleeding=MF, ME,HF,HE or (14)Thermal Cracking=ME,HF,HE (3)Patching=ME,HF,HE or (4)Surface Debond=LF,LE,MF,ME,HF,HE or (5)Rutting=MF,ME,HF,HE or (6)Pumping=F,E or (7)Shattered Slab=ME,HF,HE or (9)Trans Crk (Unjointed)=HF,HE or Bin G106 (10)Joint Rfl Crk=HF.HE or Str.Ded.>=15 Activity 38 or 50 (11)Intermediate Crk=HF,HE or (16)Corner Breaks=HF,HE or (17)Punchouts=HF,HE Bin G107 Bin G103 Activity 25 Activity 25 (3)Flexible (4)Composite Bin G120 Bin G110 PCR>=80 PCR>=80 Do thing Do thing PCR<55 PCR<55 Bin G111 Bin G121 or or Activity 60 Activity 60 Str.Ded.>=20 Str.Ded.>=20 ADT>=5000 ADT >=5000 PCR>=65 or or PCR>=65 ADTT>=750 ADTT>=750 Activity Codes 20 Crack Sealing 25 Chip Seal 30 Microsurfacing 31 Double Micro 35 Ultrathin Bonded AC 38 Fine Graded Polymer AC 40 CPR 45 Intermediate Course Recycled AC 50 AC Overlay w/o Repairs 52 AC Inlay 55 Double Chip Seal 60 AC Overlay w/repairs 70 Crack and Seat 73 Break and Seat 77 Rubblize and Roll 80 Whitetopping 90 Unbonded Concrete Overlay 95 Unbonded Composite Overlay 100 New Flexible Pavement 110 New Rigid Pavement 120 New Composite Pavement (3) Flexible Pavements Bin G123 Activity 30, 31, 38 or 50 Distress Check D (1)Raveling=MF,ME,HF,HE or (2)Bleeding=HF,HE or (3)Patching=LF,LE,MF,ME,HF,HE or (4)Surface Debond=LF,LE,MO,MF,ME,HO,HF,HE or (6)Rutting=ME,HF,HE or (15)Potholes=LE,MF,ME,HF,HE or (9)Wheel Track Crk=MF,ME,HF,HE or (10)Block & Trans Crk=ME,HF,HE or (11)Longitudinal Crk=ME,HE or (12)Edge Cracking=LE,MF,ME,HF,HE or (14)Thermal Cracking=MF,ME,HF,HE Bin U302 Activity 50 PCR>65 Bin U303 Activity 50 JCP CRC PCR>80 Pavement Type Flexible Composite PCR>65 Bin U305 Activity 50 Bin U301 Do thing Bin U304 Activity 50 Extent Levels O Occasional F Frequent E Extensive Activity Codes 20 Crack Sealing 25 Chip Seal 30 Microsurfacing 31 Double Micro 35 Ultrathin Bonded AC 38 Fine Graded Polymer AC 40 CPR 45 Intermediate Course Recycled AC 50 AC Overlay w/o Repairs 52 AC Inlay 55 Double Chip Seal 60 AC Overlay w/repairs 70 Crack and Seat 73 Break and Seat 77 Rubblize and Roll 80 Whitetopping 90 Unbonded Concrete Overlay 95 Unbonded Composite Overlay 100 New Flexible Pavement 110 New Rigid Pavement 120 New Composite Pavement Bin G112 Activity 60 Bin G122 Activity 60 Bin G114 Activity 38 or 50 Bin G124 Activity 38 or 50 Bin G116 Activity 30, 31, 38 or 50 Bin G115 Activity 60 Bin G126 Activity 30, 31, 38 or 50 Distress Check C (1)Raveling=MF,ME,HF,HE or (2)Bleeding=HF,HE or (3)Patching=LF,LE,MF,ME,HF,HE or (4)Surface Debond=LF,LE,MO,MF,ME,HO,HF,HE or (5)Rutting=ME,HF,HE or (9)Trans Crk (Unjointed)=MF,ME,HF,HE or (10)Joint Refl. Crk=MF,ME,HF,HE or (11)Intermediate Crk=MF,ME,HF,HE or (16)Corner Breaks=MO,MF,ME,HO,HF,HE or (17)Punchouts=MO,MF,ME,HO,HF,HE Bin G117 Activity 38 or 50 Str.Ded.>=15 PCR>=65 Structural Check A Unjointed Base Bin G118 (9)Transverse Crk=ME,HF,HE Activity 60 Jointed Base (10)Joint Refl. Crk=ME,HF,HE and (11)Intermediate Crk=LF,MF,HF,LE,ME,HE PCR>=65 Structural Check B (9)Wheel Track Crk: MF,ME,HF,HE and (12)Edge Cracking=MF,ME,HF,HE Bin G125 Activity 60 Str.Ded.>=15 Bin G128 Activity 60 Distress Check D (1)Raveling=MF,ME,HF,HE or (2)Bleeding=HF,HE or (3)Patching=LF,LE,MF,ME,HF,HE or (4)Surface Debond=LF,LE,MO,MF,ME,HO,HF,HE or (6)Rutting=ME,HF,HE or (15)Potholes=LE,MF,ME,HF,HE or (9)Wheel Track Crk=MF,ME,HF,HE or (10)Block & Trans Crk=ME,HF,HE or (11)Longitudinal Crk=ME,HE or (12)Edge Cracking=LE,MF,ME,HF,HE or (14)Thermal Cracking=MF,ME,HF,HE Bin G127 Activity 38 or 50 Bin G119 Activity 60 Bin G129 Activity 60

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47 2016 Ohio Transportation Engineering Conference Pavement Preservation ODOT Leading the Way Tim Herbst Cell :