Presentation is loading. Please wait.

Presentation is loading. Please wait.

Russian Engineers Training March 2011

Published byKaren Hall Modified over 8 years ago

Similar presentations

Presentation on theme: "Russian Engineers Training March 2011"— Presentation transcript:

1 Russian Engineers Training March 2011
Pavement Maintenance & Rehabilitation Dr. Michael Heitzman, PE Pavement Maintenance & Rehabilitation 1

2 Russian Engineers Training March 2011
Overview Part 1 Pavement Management Pavement Distress Routine Maintenance Minor Rehabilitation Major Rehabilitation Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

3 Russian Engineers Training March 2011
Overview Part 2 Hot In-place Recycling Cold Recycling Full Depth Reclamation Rubblization Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

4 Russian Engineers Training March 2011
Part 1 Pavement Management Pavement Distress Routine Maintenance Minor Rehabilitation Major Rehabilitation Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

5 Russian Engineers Training March 2011
Pavement Management Why is Pavement Management Important Pavements deteriorate with time Roads in good condition cost less Assure good pavement serviceability to the traveling public Good PM strategies using maintenance and rehabilitation are cost-effective How do you manage your car - routine OR wait until it breaks down? Which costs more? More on this 2nd Wednesday AM Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

6 Pavement Management System
Russian Engineers Training March 2011 Pavement Management System Database of the pavement networks Database of pavement conditions (updated) Tools & procedures for pavement condition prediction Production of maintenance and rehabilitation strategies Maintenance cost estimate Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation 6

7 Russian Engineers Training March 2011
Pavement Deterioration Small % of pavement life EXCELLENT GOOD FAIR POOR VERY POOR FAILED Slow decreasing in condition Significant drop 75% OF LIFE $1.00 for rehabilitation here will cost $4.00 to $5.00 here TIME (years) Critical value Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation 7

8 Russian Engineers Training March 2011
Pavement Management With treatment Extend pavement life Good 75% OF LIFE Without treatment Poor TIME (years) Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

9 Russian Engineers Training March 2011
Pavement Management (Monitor Performance) Pavement condition assessment Pavement condition assessment Pavement condition assessment Maint./Rehab activities required Maint./Rehab activities required Pavement Data Collection Pavement Data Collection Pavement Data Collection Life – cycle costs Non-monetary factors Select preferred alternatives Construction Construction Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

10 Russian Engineers Training March 2011
Cost Considerations Fog seal $0.30 / m² Sand seal $0.70 / m² Crack Sealant $1.20 / m² Slurry seal $1.70 / m² Chip seal $1.80 / m² Db. chip seal $2.30 / m² Micro-surfacing $2.60 / m² Cape seal $3.40 / m² Mill and Inlay $11.60 / m² Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

11 Russian Engineers Training March 2011
Cost Analysis Repair cost % Area repaired Overlay cost % Area repaired Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

12 Russian Engineers Training March 2011
Part 1 Pavement Management Pavement Distress Routine Maintenance Minor Rehabilitation Major Rehabilitation Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

13 Russian Engineers Training March 2011
Pavement Distress HMA Distress Rutting, Friction, Fatigue, Thermal Cracking, Aging PCC Distress Faulting, Cracking, Fatigue Premature vs Normal Distress Covered Tueday AM Match Distress with Maintenance/Rehab Techniques Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

14 How Should These Pavements be Rehabilitated?
Russian Engineers Training March 2011 How Should These Pavements be Rehabilitated? Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

15 Russian Engineers Training March 2011
Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

16 Russian Engineers Training March 2011
Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

17 Russian Engineers Training March 2011
Severe Longitudinal Cracking Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

18 Russian Engineers Training March 2011
Severe Transverse Cracking Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

19 Russian Engineers Training March 2011
Rutting Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

20 Russian Engineers Training March 2011
Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

21 Russian Engineers Training March 2011
Part 1 Pavement Management Pavement Distress Routine Maintenance Minor Rehabilitation Major Rehabilitation Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

22 Russian Engineers Training March 2011
Routine Maintenance Preventative or stop-gap keep pavements in operational / safe condition applied on pavements above the condition limit slowing the rate of deterioration does not add structural capacity Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

23 Russian Engineers Training March 2011
Routine Maintenance Patching Replace a partial depth or the full depth of the HMA layer and may include replacement of base and subbase layers. Repair structural and material related distresses such as alligator cracking, rutting, corrugation, slippage cracking. Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

24 Russian Engineers Training March 2011
Routine Maintenance Crack Sealing Ceaning and sealing or resealing cracks on the HMA layer. Fill longitudinal cracks, transverse cracks, or joint reflection cracks. Primary purpose: prevent water infiltration (pavement overall in good condition; worthless otherwise). Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

25 Russian Engineers Training March 2011
Part 1 Pavement Management Pavement Distress Routine Maintenance Minor Rehabilitation Major Rehabilitation Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

26 Russian Engineers Training March 2011
Minor Rehabilitation Generally applied to the entire pavement section with the primary goal of slowing the rate of deterioration Applied on pavements above a condition limit Include the following types of treatment: Fog seal Rejuvenators Slurry seal Surface treatment Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

27 Russian Engineers Training March 2011
Minor Rehab FOG SEAL Spraying a light coat of asphalt binder, usually an asphalt emulsion heated up to 150F ( gall/sq.yd.) on the surface of an existing pavement. Prolong the life of an AC pavement, reduce raveling and improve waterproofing. Good for pavements with little or no traffic (includes paved shoulders). Without traffic, AC pavements tend t ravel and harden faster than pavements that support moderate to heavy traffic. Pavements closed to traffic for 12-24hrs to allow the material to cure. Asphalt emulsion: normally 1 part of emulsion to at least 4 parts of water. Also to 10 parts of water. Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

28 Minor Rehab REJUVENATORS
Russian Engineers Training March 2011 Minor Rehab REJUVENATORS Bituminous materials sprayed on the surface of an existing pavement using a distributor ( gal/sq.yd. rate based on the condition of the HMA surface). Seal and waterproof pavement surface Penetrate the HMA surface and soften the asphalt binder. Reduce the rate of asphalt hardening  reduce the severity of temperature cracking. Check on the amount of rejuvenator to apply. If too high rate, some rejuvenator will not penetrate the surface and skid resistance reduced significantly. If excess rejuvenator  sanded and removed form the surface. Not to be applied on pavement surface already treated where there is already a large amount of asphalt (bitumen) near the surface; this will result in a sticky, soft surface. Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

29 Minor Rehab SLURRY SEAL
Russian Engineers Training March 2011 Minor Rehab SLURRY SEAL emulsion + water + well-graded fine aggregate + mineral filler Provide a surface seal or skid-resistant surface to structurally sound pavements Fill small cracks (< 1/8in width); larger cracks need to be repaired prior the treatment. Pavement with low to moderate level of traffic Applied when ambient temperature is above 60F and no danger of rain. Lower temperature and wet weather slow curing time or stop curing. Pavement closed to traffic for about 24hrs. New polymer mixtures allow re-opening section after 45 minutes. Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

30 Slurry Seal – Construction Procedure
Russian Engineers Training March 2011 Aggregate Bin Filler Bin Aggregate Flow Gate Aggregate Conveyor Belt Emulsion Injector Water Injector Slurry Pugmill Spreader Box Pavement Maintenance & Rehabilitation

31 Minor Rehab SURFACE TREATMENT
Russian Engineers Training March 2011 Minor Rehab SURFACE TREATMENT Apply an asphalt binder followed by a layer of aggregate, rolled into the binder  Chip Seal If SAND  Sand Seal Provide a surface seal or skid-resistant surface to structurally sound pavements Single or double treatments applied Pavement with low to moderate traffic One-size aggregate with clean and cubical particles. Elongated particles may result in the submersion of the aggregate into the asphalt and consequent bleeding Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

32 Russian Engineers Training March 2011
Surface Treatment – Construction Procedure Asphalt application 2. Rock application 3. Rolling/compaction 4. Sweeping/brooming 2 1 3 Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

33 Minor Rehab OTHER TREATMENTS
Russian Engineers Training March 2011 Minor Rehab OTHER TREATMENTS Cape Seal = Chip seal + Slurry seal Micro-surfacing: Slurry seal with high quality materials, dense graded aggregate, asphalt additives. Used to fill the wheel ruts up to 1.5 inches Provide stable, durable surface Applied when ambient temperature is above 60F and no danger of rain. Lower temperature and wet weather slow curing time or stop curing. Pavement closed to traffic for about 24hrs. New polymer mixtures allow re-opening section after 45 minutes. Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

34 Russian Engineers Training March 2011
Part 1 Pavement Management Pavement Distress Routine Maintenance Minor Rehabilitation Major Rehabilitation Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

35 Russian Engineers Training March 2011
Major Rehabilitation Applied to improve structural and / or functional requirements. Applied to deteriorated pavements, pavements deteriorating at a rapid rate, and pavements subjected to a change in traffic. Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

36 Russian Engineers Training March 2011
Major Rehabilitation Overlays Pre-Overlay Repair Reflective Cracking In-place Recycling Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

37 Russian Engineers Training March 2011
Major Rehab OVERLAYS Usually applied when pavement is in good condition May require minor repairs to the pavement prior to the HMA overlay HMA overlay over PCC pavements Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

38 Overlay – Thickness Design
Russian Engineers Training March 2011 Overlay – Thickness Design Total structural requirement (based on the needed Structural Number (a1), AASHTO, 1993) Limiting deflection approach (proposed by the Asphalt Institute, 1983) Limiting fatigue damage (mechanistic approach) Mechanistic analysis using elastic-layer theory and finite-element numerical methods. Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

39 Overlay – HMA on HMA Pavement
Russian Engineers Training March 2011 Overlay – HMA on HMA Pavement HMA thickness design Combined with other activities such as cold milling, hot recycling, and heater scarification Should perform minor repairs on the existing pavement prior to overlay Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

40 Overlay – HMA on Concrete Pavements
Russian Engineers Training March 2011 Overlay – HMA on Concrete Pavements HMA thickness design Structural condition of the PCC pavement Main issue: propagation of reflective cracks and further deterioration Discomfort generated by the reflective cracks Water infiltration Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

41 Russian Engineers Training March 2011
Major Rehab PRE-OVERLAY REPAIR For PCC slabs Slab stabilization Fractured slabs Slab repair / replacement Load transfer restoration NCHRP synthesis will be published soon Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

42 Russian Engineers Training March 2011
Pre-overlay Treatments of PCC Pavements Crack and Seat Crack size 2 feet max Must have existing good subgrades Concrete slab rubbilization Pavement is broken into pieces ranging from aggregate size to a max of 6-12in Compaction with a 10 ton steel wheel or vibratory roller Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

43 Russian Engineers Training March 2011
Cracking and Seating Overlay Subgrade Soil Subbase Firm Foundation Cracks Short slab length (~2’) Good granular interlock Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

44 Russian Engineers Training March 2011
Rubblization Slabs crashed into smaller pieces Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

45 Russian Engineers Training March 2011
Post-overlay Treatments on HMA Layer Sawing and Sealing Joints Concede appearance of reflection cracking Objective: control rate of deterioration Reduces spalling of reflection cracks Slabs should have well-defined joints Saw cut MUST be directly above the underlying joint NCHRP synthesis will be published soon Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

46 Sawing and Sealing Joints
Russian Engineers Training March 2011 Reflective crack Overlay Old pavement Sealant Initial saw cut 1/3 depth Horizontal opening Joint reservoir Subgrade Vertical differential movement Pavement Maintenance & Rehabilitation

47 Major Rehab REFLECTIVE CRACKING
Russian Engineers Training March 2011 Major Rehab REFLECTIVE CRACKING Shearing stress HMA bending stress HMA overlay Tip of the joint or working crack Void A B C Old PCC pavement Pavement Maintenance & Rehabilitation

48 Russian Engineers Training March 2011
Reflective Cracking – HMA on PCC Prevent reflective cracking: Geo-textiles contribution related to climate Geotextiles or fabrics Stress relieving or stress absorbing membrane interlayers “Band aid” type crack sealants Ineffective Research produced mixed results about effectiveness in Area II Very effective from Rollings, R. (1989), “Design of Airfield Overlays”, 2nd International Symposium on pavement evaluation and overlay design, Rio de Janeiro, Brazil. Pavement Maintenance & Rehabilitation

49 Reflective Crack Control Measures
Russian Engineers Training March 2011 Reflective Crack Control Measures Interlayer systems Stress-relieving interlayer Crack-arresting interlayer Pre-overlay treatments (Crack & seat, rubbilizing) Pre-overlay repairs (slab repair, stabilization) Post-overlay treatments (saw cut and seal joints) Increased overlay thickness Some methods to prevent reflection cracking include also: Sand Asphalt; Geotextile; Geomembrane/Geocomposite Grid/ Steel Netting Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

50 Russian Engineers Training March 2011
Interlayer Systems Reinforcement: - Stiff materials to compensate for lack of HMA tensile strength Strain tolerant (Stress relief): - Soft materials to dissipate strain energy by deforming itself Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

51 Stress-Absorbing Interlayers
Russian Engineers Training March 2011 Stress-Absorbing Interlayers Old pavement Vertical differential Movement Stress concentration Membrane Subgrade Soil Horizontal opening Overlay Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

52 Russian Engineers Training March 2011
Interlayer System: an Example at Louisiana DOT Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation 52

53 Russian Engineers Training March 2011
Interlayer System: an Example at Louisiana DOT - Conclusions Stone Interlayer showed about 1/2 of the conventional cracking after 10 years of service. • Stone Interlayer had almost 4 times the performance life of conventional soil cement. • Stone interlayer systems are more economical. • Structural capacity, ride, and rutting are similar. • RAP is an effective alternative for stone. TR News Issue Number: 233 (2004) Publisher: Transportation Research Board Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation 53

54 Russian Engineers Training March 2011
Interlayer System: Examples Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation 54

55 Russian Engineers Training March 2011
Interlayer System: Examples Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation 55

56 Reduction in Reflection Cracking
Russian Engineers Training March 2011 Reduction in Reflection Cracking Material Trans. Long. Polyguard 665 35 % 0.3 % Royston #108 90 % 0 % Royston #10AR 35 % 0 % PavePrep 5 % 2 % POLYGUARD PAVEMENT MEMBRANES are rubberized asphalt waterproofing adhesive, laminated to polypropylene fabric backings. The laminated membrane is wound onto a disposable silicone treated release sheet to prevent the membrane from sticking onto itself while in the roll. Royston: membrane and adhesive coat Roadglas is a woven glass fiber roving fabric. It has a tensile strength of about 800 lbs per inch. A polymer-modified asphalt binder called Roadbond was used with the Roadglas system. Bituthene: Self-adhesive rubber/bitumen polyethylene waterproof membrane for basements and sub-structures. Petrotac: stress absorbing membrane Roadglas 29 % 0 % Bituthene H.D. 50 % 0 % Petrotac 30 % 0 % Pavement Maintenance & Rehabilitation

57 Increased Overlay Thickness
Russian Engineers Training March 2011 Increased Overlay Thickness Delays the occurrence of reflective cracks Cracks propagate about 25 mm per year Reduces temperature fluctuations in underlying pavement Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

58 Major Rehab IN-PLACE RECYCLING
Russian Engineers Training March 2011 Major Rehab IN-PLACE RECYCLING Hot In-place Recycling Cold In-place Recycling Full Depth Reclamation Rubblization Covered 2nd Tuesday Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

59 Russian Engineers Training March 2011
Questions? Part 1 Pavement Management Pavement Distress Routine Maintenance Minor Rehabilitation Major Rehabilitation Pavement Maintenance & Rehabilitation Pavement Maintenance & Rehabilitation

Download ppt "Russian Engineers Training March 2011"

Similar presentations

Rigid Pavement Concrete. Transverse Cracking Rigid Pavement Transverse Cracking Causes:  Slab longer than 15’ Slab Curl Curing.

Rigid Pavement Concrete. Transverse Cracking Rigid Pavement Transverse Cracking Causes:  Slab longer than 15’ Slab Curl Curing.
Design and Construction Guidelines for Thermally Insulated Concrete Pavements Lev Khazanovich, UM John Harvey, UCD Joe Mahoney, UW September 12, 2007.

Design and Construction Guidelines for Thermally Insulated Concrete Pavements Lev Khazanovich, UM John Harvey, UCD Joe Mahoney, UW September 12, 2007.
1 Preserving Municipality Roadways. 2 3 4 Federal = 3% State = 20% Local = 77% 94% of paved roads have an Asphalt surface FHWA Source: Stephen R. Mueller,

1 Preserving Municipality Roadways Federal = 3% State = 20% Local = 77% 94% of paved roads have an Asphalt surface FHWA Source: Stephen R. Mueller,
Highway Engineering Pavement Types

Highway Engineering Pavement Types
Module 4-2 : Joint Sealing

Module 4-2 : Joint Sealing
Pavements. Concrete –Rigid pavement Used where strength is an issue Runways, interstates and major roads –Continuous reinforcing Must have a good base.

Pavements. Concrete –Rigid pavement Used where strength is an issue Runways, interstates and major roads –Continuous reinforcing Must have a good base.
Chapter 6 Chip Seals From… Maintenance Technical Advisory Guide (MTAG)

Chapter 6 Chip Seals From… Maintenance Technical Advisory Guide (MTAG)
Asphalt-Rubber Systems Types and Uses. Types SAM Stress Absorbing Membrane SAMI Stress Absorbing Membrane Interlayer ARC - DG Asphalt Rubber Concrete.

Asphalt-Rubber Systems Types and Uses. Types SAM Stress Absorbing Membrane SAMI Stress Absorbing Membrane Interlayer ARC - DG Asphalt Rubber Concrete.
Properties of Asphalt Important properties of asphalt include: Adhesion Consistency Specific Gravity Durability Rate of curing Ductility Aging and.

Properties of Asphalt Important properties of asphalt include: Adhesion Consistency Specific Gravity Durability Rate of curing Ductility Aging and.
Perpetual Pavements Concept and History Iowa Open House

Perpetual Pavements Concept and History Iowa Open House
TOPIC OF THE DAY Flexible Pavement Distresses/Failure Of Structure.

TOPIC OF THE DAY Flexible Pavement Distresses/Failure Of Structure.
HIGHWAY ENGINEERING AND TRAFFIC ENGINEERING CENG 95.

HIGHWAY ENGINEERING AND TRAFFIC ENGINEERING CENG 95.
PAVEMENT REHABILITATION

PAVEMENT REHABILITATION
Full-Depth Reclamation Using a Cement Slurry Spreader Attached to a Ready Mixed Concrete Truck W. Spencer Guthrie, Ph.D., Associate Professor Charles A.

Full-Depth Reclamation Using a Cement Slurry Spreader Attached to a Ready Mixed Concrete Truck W. Spencer Guthrie, Ph.D., Associate Professor Charles A.
No. 18 of 19 Geosynthetics in Asphalt Pavements by Prof. S.F. Brown FEng University of Nottingham The information presented in this document has been reviewed.

No. 18 of 19 Geosynthetics in Asphalt Pavements by Prof. S.F. Brown FEng University of Nottingham The information presented in this document has been reviewed.
City of Auburn Hills Road Asset Management Program February 21, 2014 SEMCOG University.

City of Auburn Hills Road Asset Management Program February 21, 2014 SEMCOG University.
Pavement Design CE 453 Lecture 28.

Pavement Design CE 453 Lecture 28.
The Rehabilitation Solution for Alabama’s Concrete Pavements

The Rehabilitation Solution for Alabama’s Concrete Pavements
Pavement Design Terms and Concepts

Pavement Design Terms and Concepts
Bituminous Street Recertification Initiatives. Initiative Items n Stone Matrix Asphalt (SMA) n Longitudinal Joint Spec and other methods for longitudinal.

Bituminous Street Recertification Initiatives. Initiative Items n Stone Matrix Asphalt (SMA) n Longitudinal Joint Spec and other methods for longitudinal.

Similar presentations

Ads by Google