Michigan Department of TransportationPavement Demonstration ProgramMichigan Department of TransportationPavement Demonstration Program
Rep. Rick Olson’s 2012 Best Practices Conferenceon Road and Bridge MaintenanceRep. Rick Olson’s 2012 Best Practices Conferenceon Road and Bridge Maintenance
Curtis BleechCurtis Bleech
Pavement Operations EngineerPavement Operations Engineer
August 16, 2012August 16, 2012
Pavement DemonstrationPavement Demonstration
•LCCA Law•LCCA Law
•Legally Can Not Perform DemonstrationProject•Legally Can Not Perform DemonstrationProject
•No Equivalent Pavement Design•No Equivalent Pavement Design
•No Performance Data•No Performance Data
•Development of Pavement Demonstration Law•Development of Pavement Demonstration Law
•Allows Demonstration Projects WithoutPerforming LCCA•Allows Demonstration Projects WithoutPerforming LCCA
Pavement Demonstration LawPavement Demonstration Law
•Allows four demo projects per year withouthaving to go through life-cycle•Allows four demo projects per year withouthaving to go through life-cycle
•“…to evaluate new construction methods,materials, or design”•“…to evaluate new construction methods,materials, or design”
•“Each demonstration project shall includemeasurable goals and objectives for determiningthe success of that project”•“Each demonstration project shall includemeasurable goals and objectives for determiningthe success of that project”
• “The department shall make a final report foreach demonstration project…that assesses thecost-effectiveness and performance…”• “The department shall make a final report foreach demonstration project…that assesses thecost-effectiveness and performance…”
Pavement Demonstration LawPavement Demonstration Law
•Criteria for selection:•Criteria for selection:
–Designs intended to increase pavement lifeexpectancy–Designs intended to increase pavement lifeexpectancy
–Designs intended to improve performance,including:–Designs intended to improve performance,including:
•Friction•Friction
•Surface stress•Surface stress
•Noise reduction•Noise reduction
•Improved ride quality•Improved ride quality
–Comparisons of performance of various types ofpavement–Comparisons of performance of various types ofpavement
Pavement Demonstration LawPavement Demonstration Law
•Pavement costs for demo projects must balancewithin 20% between the two paving materialsover a two year period•Pavement costs for demo projects must balancewithin 20% between the two paving materialsover a two year period
•Director has to provide an annual report ondemonstration projects to the State House andSenate Transportation Committees•Director has to provide an annual report ondemonstration projects to the State House andSenate Transportation Committees
Pavement DemonstrationPavement Demonstration
•Examples of Project Types•Examples of Project Types
•White-topping (concrete over HMA)•White-topping (concrete over HMA)
•Thin un-bonded concrete overlay (4”)•Thin un-bonded concrete overlay (4”)
•Low-volume concrete reconstruct (6”)•Low-volume concrete reconstruct (6”)
•Perpetual HMA pavement (40 year design)•Perpetual HMA pavement (40 year design)
•Perpetual HMA pavement on rubblizedconcrete (40 year design)•Perpetual HMA pavement on rubblizedconcrete (40 year design)
Demonstration ProjectsDemonstration Projects
Demonstration ProjectsDemonstration Projects
•I-75 near West Branch•I-75 near West Branch
–6” unbonded concrete overlay on NB–6” unbonded concrete overlay on NB
–Rubblize and HMA resurface on SB–Rubblize and HMA resurface on SB
–Both projects constructed concurrently–Both projects constructed concurrently
–Several test sections involving undoweled anddoweled joints, 10’ and 12’ joint spacing, sealed andunsealed joints–Several test sections involving undoweled anddoweled joints, 10’ and 12’ joint spacing, sealed andunsealed joints
•Minor longitudinal cracking•Minor longitudinal cracking
Demonstration ProjectsDemonstration Projects
Demonstration ProjectsDemonstration Projects
Demonstration ProjectsDemonstration Projects
•M-84 between Saginaw and Bay City•M-84 between Saginaw and Bay City
–40 year HMA perpetual pavement design on SB(existing roadbed) 6.5” HMA, 12” agg. base, 14”sand subbase–40 year HMA perpetual pavement design on SB(existing roadbed) 6.5” HMA, 12” agg. base, 14”sand subbase
–Normal 20 year HMA design on NB (new roadbed)–Normal 20 year HMA design on NB (new roadbed)
•6.5” HMA, 6”agg. base, 18” sand subbase•6.5” HMA, 6”agg. base, 18” sand subbase
–Perpetual pavement HMA polymerized–Perpetual pavement HMA polymerized
•Very few distresses on SB•Very few distresses on SB
Demonstration ProjectsDemonstration Projects
Demonstration ProjectsDemonstration Projects
•M-3 (Gratiot Ave.) in Detroit•M-3 (Gratiot Ave.) in Detroit
–Thin unbonded overlay (4”)–Thin unbonded overlay (4”)
–Existing composite, HMA milled down and new 1”separator layer placed–Existing composite, HMA milled down and new 1”separator layer placed
–Four test sections – two separator layers and sealedand unsealed joints–Four test sections – two separator layers and sealedand unsealed joints
–Joint spacing 5’ to 6’–Joint spacing 5’ to 6’
–Potential 15 year fix–Potential 15 year fix
•Some panels have been replaced due to cracking•Some panels have been replaced due to cracking
Demonstration ProjectsDemonstration Projects
Demonstration ProjectsDemonstration Projects
Demonstration ProjectsDemonstration Projects
Demonstration ProjectsDemonstration Projects
•M-13 in Pinconning•M-13 in Pinconning
–Low-volume concrete design–Low-volume concrete design
–Reconstruct with 6” of concrete, 6” of dense-graded agg.base, and 12” of sand subbase–Reconstruct with 6” of concrete, 6” of dense-graded agg.base, and 12” of sand subbase
–5.5’ joint spacing in both directions–5.5’ joint spacing in both directions
–No dowel bars at transverse joints–No dowel bars at transverse joints
–Unsealed joints–Unsealed joints
–15 to 20 year expected life–15 to 20 year expected life
•Performing very well•Performing very well
•New cracks at approach to structure at PinconningRiver•New cracks at approach to structure at PinconningRiver
Demonstration ProjectsDemonstration Projects
Demonstration ProjectsDemonstration Projects
•I-96 WB in Detroit•I-96 WB in Detroit
–40 year perpetual pavement design–40 year perpetual pavement design
•14” HMA, 16” OGDC, 8” sand subbase, 12” limestabilized subgrade•14” HMA, 16” OGDC, 8” sand subbase, 12” limestabilized subgrade
–Normal 20 year JPCP design on EB–Normal 20 year JPCP design on EB
–Not a side by side comparison–Not a side by side comparison
•No distresses in the perpetual pavement•No distresses in the perpetual pavement
Demonstration ProjectsDemonstration Projects
•M-99 in Springport•M-99 in Springport
–Low-volume concrete–Low-volume concrete
–Reconstruct with 6” of concrete, 6” of dense-graded agg.base, and 12” of sand subbase–Reconstruct with 6” of concrete, 6” of dense-graded agg.base, and 12” of sand subbase
–6’ joint spacing in both directions–6’ joint spacing in both directions
–No dowel bars at transverse joints–No dowel bars at transverse joints
–Unsealed joints–Unsealed joints
–15 to 20 year expected life–15 to 20 year expected life
•Early age cracking (possibly late sawing)•Early age cracking (possibly late sawing)
Demonstration ProjectsDemonstration Projects
Demonstration ProjectsDemonstration Projects
•I-75 NB in Cheboygan County•I-75 NB in Cheboygan County
–40 year HMA perpetual pavement design on NBover rubblized concrete 8.0” HMA–40 year HMA perpetual pavement design on NBover rubblized concrete 8.0” HMA
–NB also had concrete reconstruct and unbondedoverlay–NB also had concrete reconstruct and unbondedoverlay
–Unbonded overlay on SB the previous year–Unbonded overlay on SB the previous year
–Not a side by side comparison–Not a side by side comparison
Demonstration ProjectsDemonstration Projects
•M-1 (Woodward Ave.) in Detroit•M-1 (Woodward Ave.) in Detroit
–Thin unbonded overlay (4”)–Thin unbonded overlay (4”)
–Existing composite, HMA milled down and new 1”separator layer placed–Existing composite, HMA milled down and new 1”separator layer placed
–Joint spacing 5’ to 6’ and sealed–Joint spacing 5’ to 6’ and sealed
ResultsResults
•Some observations at early ages•Some observations at early ages
•Sealing of joints appears beneficial to helpprevent water infiltration•Sealing of joints appears beneficial to helpprevent water infiltration
•Perpetual HMA pavement showing less crackingthan comparison section•Perpetual HMA pavement showing less crackingthan comparison section
•For thin un-bonded concrete overlays, drainableHMA interlayer showing less cracking thandense graded interlayer•For thin un-bonded concrete overlays, drainableHMA interlayer showing less cracking thandense graded interlayer
•Low-volume concrete design has little crackingto date•Low-volume concrete design has little crackingto date
Candidate ProcessCandidate Process
•Can be just a portion of a larger project•Can be just a portion of a larger project
•Typically get buy-in from industry groups•Typically get buy-in from industry groups
•Candidate project is submitted to EngineeringOperations Committee with a workplan•Candidate project is submitted to EngineeringOperations Committee with a workplan
–Experimental feature–Experimental feature
–Potential benefits–Potential benefits
–Monitoring plan–Monitoring plan
–Reports to be written–Reports to be written
Candidate ProcessCandidate Process
•If EOC approves, it becomes an officialDemonstration Project•If EOC approves, it becomes an officialDemonstration Project
•Candidate projects must be submitted beforeany life-cycle documents are submitted•Candidate projects must be submitted beforeany life-cycle documents are submitted
•Currently no extra funding for demonstrationprojects•Currently no extra funding for demonstrationprojects
Plan For Future Demo’sPlan For Future Demo’s
•Types of projects:•Types of projects:
–White-topping (regular and ultra-thin)–White-topping (regular and ultra-thin)
–Thin un-bonded overlay–Thin un-bonded overlay
–Low-volume concrete reconstruction–Low-volume concrete reconstruction
–Perpetual pavement on rubblized concrete–Perpetual pavement on rubblized concrete
–Long life concrete reconstruction–Long life concrete reconstruction
–HMA over stabilized base–HMA over stabilized base
–Others?–Others?
Questions?Questions?
