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Tools for Pavement Preservation
The document discusses the pavement management strategies used by the City of Lakeland's Public Works Construction & Maintenance Division. It provides details on the division's budget, staffing, equipment, and software used. It also summarizes the various pavement preservation techniques utilized over the past 30 years, including surface treatments, slurry seal, microsurfacing, cape seal, and full depth reclamation. Case studies are presented on projects where microsurfacing was used as a "band aid" and on resurfacing runways at Joker Marchant Stadium. Ongoing efforts to improve practices and adopt new preservation methods are also outlined.
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Tools for Pavement Preservation
- 1. Troy McCain RandyShane Pavement Coordinator Technical Marketing Manager City of Lakeland Asphalt Paving Systems
- 2. Pavement Management • APWAdefinition in 1983 • Pavement management is a systematic method for routinely collecting, storing, and retrieving the kind of decision-making information needed to make maximum use of limited maintenance (and construction) dollars.
- 3. FY 2014TOTAL 2.1 MILLION Expenses for personnel and equipment and material averages $450,000 390 centerline miles Building A Vibrant Future Through Transportation Enhancements CITY OF LAKELAND PUBLIC WORKS CONSTRUCTION & MAINTENANCE DIVISION
- 4. Personnel (Tableof Organization) MicroPaver Software Reverse calls (Century 21) prior to paving GIS (ARCMAP)GPS, ADA, Striping Pavement Strategies (Preservation) CITY OF LAKELAND PUBLIC WORKS CONSTRUCTION & MAINTENANCE DIVISION
- 5. 2-Asphalt Patch Trucks 1-Striping Crew • Asphalt trucks perform routine maintenance along with utility cuts from various divisions • Patch roads prior to microsurfacing • Striping Crew performs routine maintenance as well as new construction • Do have a contractor on hand for some work.
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- 7. Began Utilizing1999 with 632 lane miles Continue to use along with ArcMap current 741 lane miles of streets CITY OF LAKELAND PUBLIC WORKS CONSTRUCTION & MAINTENANCE DIVISION
- 8. 1. InventoryDefinition 2. Pavement Inspection (19 different pavement distresses) 3. Condition Assessment 4. Condition Prediction 5. Condition Analysis 6. Work Planning CITY OF LAKELAND PUBLIC WORKS CONSTRUCTION & MAINTENANCE DIVISION
- 9. Rating System • Thepavement condition index (PCI) survey is an example of a detailed survey method. It was developed by the U.S. Army Corps of Engineers, adopted by the American Public Works Association and ASTM International (formerly the American Society for Testing and Materials), and documented in ASTM D6433, Standard Test Method for Roads and Parking Lots Pavement Condition Index Surveys (ASTM 2009). • The PCI methodology is a rating system that measures the pavement integrity and surface operational condition based on a 100-point rating scale. • According to this methodology, the pavement network is first divided into branches (e.g., individual road), sections (e.g., segments with consistent work history), and sample units.
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- 12. PRIOR TO RESURFACING •Access addresses utilizing GIS • Use addresses to retrieve phone numbers from billing system • Send out 1-2 weeks prior. • Have contractor place a second notice 24-48 hrs. of actual work. • Cost of 50 residents is around $15.00 • .30 per number.
- 13. Capturing Number ofRamps Future Resurfacing
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- 18. Pavement Management StrategiesUsed • #1 Surface Treatment (1991) • Cost Approximately $1.50 per sq. • Expectant life service of seven (7) years. • This is the application of one to three courses of carrying size aggregate to the existing pavement. We have found this to be a very good surface maintenance product in the past. We discontinued using it in 1991 not because it wasn’t doing the job but due to citizen complaints about the loose aggregate and rough texture on the streets. Between 1985 and 1991, 88.5 lane miles were maintained using this method
- 19. Pavement Strategies • #2Slurry Seal • A mixture of an approved emulsified asphalt, mineral aggregate, water and specified additives applied approximately 1/8” to 1/4” thick. • Cost Approximately $1.20 per sq. yd. • Expectant life service of six (6) years. • The city of Lakeland used exclusively from 1971 to 1988. This was proven to be very effective while it was being used. We quit using this product after 1988. The major drawback to this product is the length of time residents were required to keep their vehicles off the street which as an average of eight (8) to nine (9) hours • Due to ADA stipulations we are again looking at this product.
- 20. Strategies • #3 Micro-Surfacing •“A blend of select crushed aggregate and sophisticated chemical formulation of asphalt cement, cationic emulsifiers, adhesives and latex applied approximately 3/8” thick.” • “The City of Lakeland has used this pavement maintenance strategy for the since 1981 • Cost $1.22 (1986) per sq. yd. single surface (2013-- $2.07) • $1.77 (1986) per sq. yd. double surface (2013-- $3.25) • Expectant life surface of seven (7) years. • “We have found this product to be very effective both cost wise as well as for public relations. Required to keep their vehicles off the street for a period of 1-2hours. • Single surface is recommended for residential streets and double surface for collectors.” • Double surfaces we have been averaging 10 years.
- 21. Projects Utilizing Microsurface •We have in past used Micro as a “Band Aid” on areas where we submitted for CIP (Capital Improvement) • Buena Vista St. (Preservation vs Mill/Pave) • Joker Marchant Stadium. Resurfacing of old concrete runways.
- 23. Pavement Strategies Used ActualWork Performed BUENA VISTA 4111 SQ YDS YEAR COST Surface Treatment 1983 $1,603 Double Micro 1996 $5,015 Cape Seal/Double Micro 2003 $13,607 Double Micro 2013 $12,086 30YRS $ 32,311
- 24. Estimated Cost toMill and Overlay same street 2 times over 30 years BUENA VISTA 4111 SQ YDS YEAR COST 1983 $ ------ 1996 $23,638 2003 $-------- 2013 $41,808 30YRS $65,446 VS 32,311 (Preservation) Saving of $33,135 for single street
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- 27. Concrete from Runways PerformedCape Seal 1996
- 28. After Cape SealPrior to Project.
- 29. Area prior toMicro
- 30. Same area aftermicro
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- 33. 1. Startedrequiring a three year guarantee verses the one year that we received in past. 2. Also be more proactive in calibration and testing of products. 3. 6% Polymer in Micro 4.Introduce some type of rejuvenator. Fog seal/Reclamite 5. Look at Slurry product again along with scrub seal/cape seal. CITY OF LAKELAND PUBLIC WORKS CONSTRUCTION & MAINTENANCE DIVISION PROPER PAVEMENT PRESERVATION IS AN ONGOING PROCESS
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- 35. 3. Utilizing 6%Polymer (Left)
- 36. 3. Tire Mark(6% on right.) 6% polymer DoubleMicro Double Microsurface
- 37. 4. Rejuvenator (cemetery) Somelight cracking present After treatment
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- 39. Review newADA issues and how that will impact budget. Increased cost for material decrease in available funds. CITY OF LAKELAND PUBLIC WORKS CONSTRUCTION & MAINTENANCE DIVISION
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- 42. CITY OF LAKELANDPUBLIC WORKS CONSTRUCTION & MAINTENANCE DIVISION
Editor's Notes
- #4 Each year we average 1.6 million on our resurfacing program. We have 92.6 centerline mile of collector streets and 252.4 centerline residential streets to maintain in the city.
- #8 Lakeland’s pavement management program manages over 741 lanes miles of roadways. We utilize software to record history of work done as well as utilize the pavement plans that can be run in program.