Precast concrete pavement is becoming a favorable option to restore the functional and structural capacity of high-truck-volume traffic pavement. INDOT has a pilot project designed and constructed successfully in 2018. This session introduces the technology to practicing engineers

Brechbill, Jeff

Fox, Gary

Gill, Rob

Nantung, Tommy

English

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Precast Concrete Pavement SystemsTommy Nantung, INDOT Division of Research and DevelopmentGary Fox, INDOT Pavement DivisionJeff Brechbill, First Group Engineering, Inc.Rob Gill, INDOT Project Engineer Short History of the Precast Concrete Pavement• Implemented in runways in some countries, mainly in Russia and Japan.• Highway applications began in the US in 1970s by Michigan and Virginia for pavement repair using reinforced concrete panel.• Rapid Development from 2000 to 2010• FHWA/University of Texas: Pre-stressed Precast Concrete Pavement (PPCP)• Development of proprietary and non-proprietary system• Jointed/dowelled panels for intermittent short repair and replacement of long pavement sections• AASHTO Technical Implementation Group Efforts for PCP• SHRP-2 Rapid Renewal: at least 15 State DOTs received funding• Intermittent Repair (Generic) • Pre-stressed Precast (Generic)Several Available Types of PCP• Illinois Toll Road System (Generic) • Caltrans System (Proprietary)Several Available Types of PCP• Fort Miller System (Proprietary) • Roman Stone (Proprietary)Several Available Types of PCPPrecast Concrete Pavement (PCP) Department Overview• INDOT is testing implementation of PCP as a concrete pavement option.• Cost considerations - First costs for PCP is expected to be higher than conventional PCCP. However, longer service life is anticipated. • Potential advantages:• Improved durability of the concrete is anticipated. This would be attributable to more controlled placement and curing conditions at a precast plant. • Speed of installation may also be improved.  • The US 40, Richmond project is the first INDOT PCP Prototype project. The project was designed to utilize the Fort Miller system. For more information, see the Fort Miller booth and/or visit the INDOT project website. (https://www.in.gov/dot/div/contracts/slab/30397.htmINDOT Vision)• Use of PCP is a tool for improving and increasing the effectiveness of the Department’s pavement operations. The goal is to fully develop INDOT’s in house expertise. Precast Concrete Pavement (PCP) Department Overview• Additional prototype projects are being evaluated by the Department. This will involve further testing and development of PCP systems.• The Department has developed specifications for a generic PCP system that includes PCP for pavement construction, rehabilitation and patching.• Long term goals or future foreseeable applications of PCP:• Determine suitability for use of PCP in urban or other environments. • Expedite concrete pavement repairs on interstates and state roadways. The expected advantage is shorter lane closures and better results with extended pavement life .• Important concepts for US 40, Richmond:• The project’s urban setting is a suitable test location for this experimental feature. The Fort Miller, Inc. Super Slab System with removable panels will facilitate any future utility work or other repairs.• Due to nature of proprietary systems and their patents, we are seeing what appears to be more stringent QC expectations due to strategic risk to a proprietary system.  • FHWA approval was obtained for the proprietary Fort Miller, Inc. Super Slab system.Richmond Project Information• Contract R-30397• Includes• US 40  - Des. No. 0013790 (PCP Pavement)• US 27 – Des. No. 0100701 (HMA Pavement)• City of Richmond, Indiana• INDOT Greenfield District• Letting Date: February 8, 2017• Anticipated Completion Date: Late April/early May, 2019 • Prime Contractor: GradexPrecast Concrete Pavement - US 40 Eastbound (South A Street) from South 3rd Street to South 11th Street, and US 40 (South 11th Street) from South A Street to East Main StreetArea Map: Richmond, IN – U.S. 27 and U.S. 40 Project LimitsU.S. 27 Limits of ProjectLimits of U.S. 40 ProjectU.S. 40 Project Limits U.S .40 Eastbound (South A Street) from South 3rd Street to South 11th Street, and U.S. 40 (South 11th Street) from South A Street to East Main StreetPrecast Concrete Pavement (PCP) Design OverviewPlan Development & Coordination:• Very quickly needed to make the change to Precast Concrete Pavement• Needed to combine and bid with US 27 - designed by another firm• No INDOT Standard Drawings, Pay Items, or Specifications were available• Extensive coordination was required• Utility Considerations were very important• Importance of accurate locations of existing and relocated utilities• No saw cut traffic signal loops – used wireless vehicle detectionPrecast Concrete Pavement (PCP) Design OverviewMaintenance of Traffic Considerations:• Joints between panels need to line up with MOT plan and lane lines• Large brick sewer beneath center of US 40 required lining with CIPP• All underground sewer and utility work required completion before panel placementPublic Outreach – Contractor Presentation before bidding:• Assisted INDOT in preparing and delivering a presentation for Contractors• Local Contractors were unfamiliar with using Precast Concrete PavementPrecast Concrete Pavement (PCP) Precast Panel PlansPrecast Concrete Pavement (PCP) Typical Cross Section• Three Lane Roadway Section• 9.5” Precast Concrete Pavement, Removable• Proprietary Product specified: Super-Slab® Removable and Reusable Urban Pavement System® RUP, Fort Miller Co., Inc.• Precision Grading Fine Aggregate on 4” Comp. Agg. Drainable Subbase• 12,165 SYS of Precast Concrete Pavement (approximately 1,100 panels) • 0.60 miles total length along US 40 - (S. A St.) from 3rd St. to 11th St.Precast Concrete Pavement (PCP) Typical Panel SizesU.S. 40 (S. A St.)Typical Size and Layout ofPrecast Concrete PanelsLarge panel wt. +/-11,000 lbs (5.5 Tons)Small panel wt. +/- 5,700 lbs (2.9 Tons)Precast Concrete Pavement (PCP) Typical Panel SizesU.S. 40 (S. 11th St.)Typical Size and Layout ofPrecast Concrete PanelsPanel wt. +/-11,400 lbs (5.7 Tons)Precast Concrete Pavement (PCP) Details• 2’ Concrete Curb & Gutter – not attached to Precast Concrete Panels• Placed after Precast Concrete Panels are in place• Bituminous Mastic placed between precast panels and gutter to seal the joint• Manholes, Utility castings, and other appurtenances surveyed• Portions of Precast Concrete Pavement omitted• Cast-in-Place Concrete Pavement with Reinforcing Steel requiredPrecast Concrete Pavement (PCP) DetailsPrecast Concrete Pavement (PCP) Construction OverviewProduction:• Fort Miller chosen as proprietary source, had primary responsibility for choice of precast source• Source had to be on Indiana’s pre-approved precast lists• First looked at source in Dayton, had issues with getting AP aggregate source• Finally chose Norwalk Concrete of Norwalk, Ohio.  Their aggregate source already had approved AP aggregatePrecast Concrete Pavement (PCP) Construction OverviewShop Drawings:Precast Concrete Pavement (PCP) Construction OverviewProduction:• First trial batch on October 7th 2017.  Some issues with the theory behind our trial batch methodology, couldn’t complete.  Did inspect production process/sample panels.Precast Concrete Pavement (PCP) Construction OverviewProduction:• Second trial batch on October 16th and 17th 2017.  Ran test on 16th, Brian Walker (Greenfield IA technician) stayed for 17th to do follow up, test passed.• ODOT assisted with spot checks at plant throughout production cycle.• Norwalk handled all shipping to jobsite.  No significant damage to panels, just some scheduling issues.  (over size loads at night, etc.)• Paid 70% stockpile.Precast Concrete Pavement (PCP) Typical MOT• Typical Maintenance of Traffic (Phase):- Maintain access to all adjacent businesses and residences- Do not close two adjacent streets simultaneously- Final MOT phasing and details vary from illustrations- Subgrade preparation completed prior to panel installation - The first Phase of Panel delivery, unloading and placement was completed during daytime hours with brief 20 minute closuresPrecast Concrete Pavement (PCP) Construction OverviewInstallation:• Planned to place panels on typical #53 subgrade + #43 drainage layer.  1/8th inch tolerance instead of usual ½ inch.  Also thin sand layer for placement of panels.Precast Concrete Pavement (PCP) Construction OverviewInstallation:• Gradex prepped #53 layer, E&B handled #43 layer + panels.Precast Concrete Pavement (PCP) Construction OverviewInstallation:• Used GPS on small bobcat for fine grading.  Grade was able to be very precise.  Surveys earlier in contract had to locate all structures to allow panels to be built with proper space, *GENERALLY* successful with only few small issues. (1 manhole off by about 6 inches, one manhole missed, 2 manholes missed due to utility changes not communicated to designer).Precast Concrete Pavement (PCP) Construction OverviewInstallation:• Nails set by survey in finished fine grading for placement control, horizontal and vertical. Panel numbers marked on grade.Precast Concrete Pavement (PCP) Construction OverviewInstallation:• Some unforeseen issues with traffic control.  Couldn’t place at night due to above noted shipping issues, had to create temporary closures on US 40 for placement, which impacted Stellar LPA project schedule due to inability to close a section of Main street.• Placement rate, number of panels placed in a day started in the mid 30’s but ended up in the mid 50’s once the crew was comfortable with practice.  E&B had planned for mid 40’s rate during planning.  Generally able to follow the 20-30 min per truck closure periods, though some issues with late trucks.• Grout placed generally without issues.  Curb placed generally without issue. 2ndset of panels had some issues with grade along centerline, able to field adjust to within grade tolerances. Precast Concrete Pavement (PCP) Construction OverviewPrecast Concrete Pavement (PCP) Construction OverviewPrecast Concrete Pavement (PCP) Construction OverviewInstallation:• Fine milling completed after placement, no significant issues with this.  May have been unnecessary for some applications (rest area parking repairs or the like) but decided on doing in field for both smoothness and to apply texturing to surface for skid resistance.• Pucks substituted for loops for all panels, puck installation currently ongoing with no issues.Precast Concrete Pavement (PCP) Construction OverviewInstallation:• Completed section of roadway with final diamond grind surface completed.For More Information; Visit Contract R-30397 Website:http://www.in.gov/dot/div/contracts/slab/30397.htm

Precast Concrete Pavement Systems

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Precast Concrete Pavement Systems

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