2/8/2019 Cold In-Place and Full Depth Reclamation Best Practices Jason Wielinski, P.E. Heritage Research Group How might we fix these roads? How might we fix these roads? 1
2/8/2019 How might we fix these roads? Why Pavement Recycling? • Additional tools in the road construction toolbox • FDR: Full Depth Reclamation • CIR: Cold In-Place Recycling • CCPR: Cold Central Plant Recycling • Using less resources, proven construction methods • Engineered process, engineered technology Learning Objectives • Construction Technique Overview • Project Selection Guidance • Project Case Studies 2
2/8/2019 Pavement Recycling Processes Full Depth Reclamation Cold In-place Recycle Cold Central Plant Recycle (FDR) (CIR) (CCPR) Typical Depth: 5 - 12 inches Typical Depth: 3 – 5 inches Typical Depth: 3 - 6 inches Stabilizer: Emulsified/ Foamed Stabilizer: Emulsified/ Foamed Stabilizer: Emulsified/ Foamed Asphalt or Portland Cement Asphalt Asphalt Agency Usage: Agency Usage: Agency Usage: - Alternate to Reconstruction - Alternate to Deeper Mill and - Structural Base Layer Fill Distress Categories • Surface Defects CIR, CCPR – Raveling, Potholing, Bleeding • Non- Load Associated Cracking – Block, Longitudinal, Transverse, Reflective • Load Associated Cracking – Fatigue, Edge • Deformation – Rutting, Shoving Distress Categories • Surface Defects CIR, CCPR – Raveling, Potholing, Bleeding • Non- Load Associated Cracking CIR, CCPR – Block, Longitudinal, Transverse, Reflective • Load Associated Cracking – Fatigue, Edge • Deformation – Rutting, Shoving 3
2/8/2019 Distress Categories • Surface Defects CIR, CCPR – Raveling, Potholing, Bleeding • Non- Load Associated Cracking • CIR, CCPR – Block, Longitudinal, Transverse, Reflective • Load Associated Cracking FDR – Fatigue, Edge • Deformation – Rutting, Shoving Distress Categories • Surface Defects CIR, CCPR – Raveling, Potholing, Bleeding • Non- Load Associated Cracking CIR, CCPR – Block, Longitudinal, Transverse, Reflective • Load Associated Cracking CIR, CCPR – Fatigue, Edge • Deformation FDR, CIR, CCPR – Rutting, Shoving What Is FDR? • Deepest Recycle Treatment (5 - 12 in.) • Uniformly crushed, pulverized and blended with stabilizer • Results in stabilized base course • Requires Wearing Course 4
2/8/2019 Full Depth Reclamation • Three Types of FDR – Mechanical Stabilization • Pulverization • Compaction – Bituminous Stabilization • Emulsified Asphalt • Foamed Asphalt – Chemical Stabilization • Cement 13 Full-Depth Reclamation Aggregate Base Subgrade Subgrade Bituminous Stabilized FDR Chemical Stabilized FDR 5
2/8/2019 Completed FDR Emulsion FDR Mat Cement FDR Mat Samaria Road • Original Construction in 1964 – Length of roadway 10.3 miles – Non Reinforced 8” concrete pavement – 18” dowel bars on center joint at 24” spacing – Designed as “floating” concrete pavement • MDOT turned roadway over to the County – With no funding to maintain • Severe deterioration for last 20 Years • Fall 2013 Michigan Legislature sets aside $5 million for reconstruction How to reconstruct for $5 Million? • “Normal” construction techniques would exceed budget • Project needed to be completed in phases • Access to residents and businesses to be maintained • Profile could not be raised • Project Completion date set for November 6
2/8/2019 How to reconstruct for $5 Million? • Contractors had excess amounts of RAP stockpiled • County to use removed concrete as aggregate for other road projects • Buy-in from the County Road Commission to use recycled materials for the new construction • Contractors bids ranged from $5.8 million to $4.5 million Construction: Concrete Removal Existing Aggregate Base 7
2/8/2019 Placement of RAP RAP Compaction 8” FDR with Emulsified Asphalt 8
2/8/2019 Asphalt Overlay – 2” Level 1 ½” Surface Finished Pavement Samaria Rd Fall 2018 9
2/8/2019 Start to Finish Cold In-place Recycling CIR Existing HMA 3 0 What Is Cold In-place Recycling? 10
2/8/2019 CIR Equipment Types CIR Operation IL SR 130: Philo Rd • Composite Pavement • 8 in JRCP • ~4” HMA • 6k – 7k ADT • Less than 3% Trucks • Solution: • 4.0 inch CIR • Multiple Lift HMA Overlay • 1.25” Leveling • 1.5” Surface CIR cost equivalent to 1.25 inches of leveling binder 11
2/8/2019 IDOT SR 130 IDOT SR 130 IDOT SR 130 Construction Issues • CIR Processing Occurred Late May – early June • Then it started to rain • CIR Material Set Up • Moisture remained in the CIR • Bath tub Effect with Shoulders – High moisture made paving HMA Difficult to Compact • Drains Installed September • CIR Carried Traffic for 3 Months • CIR Surfaced with 2 Lifts of HMA 12
2/8/2019 IDOT SR 130 Data and Pictures Provided by Marshall Thompson IDOT SR 130 Pictures Provided by Marshall Thompson IDOT SR 130 Pictures Provided by Marshall Thompson 13
2/8/2019 IDOT SR 130 Information Provided by Marshall Thompson WV DOH – Ravenswood SR 2 • 4 Lane Divided Highway • 65/45 mph zone • Driving Lane impassable • Emergency 1.25 inch inlay • Composite Pavement • 64k sq. yds of CIR WV DOH – Ravenswood SR 2 14
2/8/2019 WV DOH – Ravenswood SR 2 WV DOH – Ravenswood SR 2 WV DOH – Ravenswood SR 2 15
2/8/2019 WVDOH Ravenswood SR 2 IRI Data Fugro Fugro Fugro Fugro WV DOH (ICC) Operator Data Provided by WV DOH Year 2014 2015 2016 2017 2018 Start Milepost Stop Milepost (mile) (mile) Avg IRI (in/mi) Avg IRI (in/mi) Avg IRI (in/mi) Avg IRI (in/mi) Avg IRI (in/mi) 176 1.2 1.3 220.1 71.1 112 114.9 138.2 1.3 1.4 201.1 192.8 54.4 55.5 1.4 1.5 234.9 101.8 57.1 53.7 67.6 1.5 1.6 240.4 171.1 54.3 64.6 55.1 1.6 1.7 236.9 110.9 57 59.3 71.8 Fugro Fugro Fugro Fugro WV DOH (ICC) 1.7 1.8 181 117.4 55.5 60.9 57.8 Operator 1.8 1.9 171.2 112 57.1 59 49.7 Year 2014 2015 2016 2017 2018 115.9 1.9 2 163.8 62.8 52.9 50.9 Start Stop 110.6 2 2.1 217.4 53.4 55.5 47.4 Milepost Milepost Avg IRI Avg IRI Avg IRI Avg IRI 133.4 2.1 2.2 187.9 51.3 61.5 65.5 (mile) (mile) (in/mi) (in/mi) (in/mi) (in/mi) Avg IRI (in/mi) 86.1 2.2 2.3 224 57.2 81.1 43.3 102.7 Average 169.9 115.8 67.4 67.2 62.6 2.3 2.4 234.9 57.2 60.7 51.0 99.9 2.4 2.5 162.2 80.5 56.7 49.0 2.5 2.6 134.6 122.9 55.6 60.7 59.0 2.6 2.7 161.8 101 56.2 58.6 55.8 2.7 2.8 86.7 123.6 59.3 65 57.0 2.8 2.9 107.8 114.8 56.5 75.9 68.2 2.9 3 122.8 71.7 58.1 55.9 66.3 97.5 3 3.1 71.9 70.8 59.1 133.2 3.1 3.2 205.1 62.7 69.5 55.3 95.2 3.2 3.3 143.4 53.2 74.2 53.7 149.5 3.3 3.32 171.6 68.1 125 100.6 78.6 10.86 10.9 105 89.5 64.1 81.0 10.9 11 90.5 81 72.5 Average 169.9 115.8 67.4 67.2 62.6 Cold Central Plant Recycling Stockpile at “Central Plant” You can’t fix what you can’t touch Stockpile and Central Plant Processed RAP Recycling Agent Newly Recycled Recycling Unit Material 16
2/8/2019 Hauling CCPR Material Cold Central Plant Recycling Source • RAP Stockpile • Current Roadway CCPR Placed on • Other Roadway • Aggregate Base • Stabilized Bases • CCPR • Existing Pavement CCPR Case Study: INDOT SR 101 • Project Background • 8 Miles in Length • Major Collector NE of Fort Wayne • HMA over Base over low strength subgrade • Narrow travel lanes • Proposed Solution • Widen Pavement • Increase subgrade strength • Combination of recycling techniques 17
2/8/2019 CCPR Case Study: INDOT SR 101 26’ Width Pave HMA Stockpile Material Pave CCPR ASPHALT Cement FDR 20’ Width CCPR Case Study: INDOT SR 101 How might we fix these roads? 18
2/8/2019 How might we fix these roads? How might we fix these roads? Keys for Successful Projects • Right road, right time, right treatment – Process Selection • Utilize Engineered Process – Project Scoping – Stabilizer Selection – Mix Design – Quality Control 19
2/8/2019 Thank you! • Questions? • Comments? • Jason Wielinski, P.E. • Heritage Research Group • Jason.Wielinski@hrglab.com Thank You Session Evaluations/PDH’s See you again at: • Complete session feedback in • CONEXPO-CON/AGG 2020 mobile app, your comments – March 10-14, 2020 appreciated. – Las Vegas, NV – 140+ education sessions • World of Asphalt 2021 • Professional Development Hours logged in session – March 16-18, 2021 – Atlanta, GA feedback. – 120+ education sessions #WorldofAsphalt 20
Recommend
More recommend
