Wet Reflective Marking Field Trials Interim Report Spring 2006 updated 3/14/2006

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Wet Reflective Pavement MarkingsFall 2005
Field Trials
Maggi Chalkline, P.E. Mn/DOT Pavement Marking
Engineer Office of Traffic, Security and
Operations
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TH 610 between US 169 and MN 252
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Participating Products

• 3M
• 380WR-ES Wet Reflective Tape
• Epoplex
• Glomarc 90 Dual Component Liquid
• Standard epoxy with special bead configuration
• Degussa/Ennis
• Pathfinder Methacrylate

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3M Tape380 WR-ES Wet Reflective

• Standard Installation
• Same price as standard 380 IES (on Qualified
  Products List)
• 5-12 year expected life if grooved in

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3M Tape380 WR-ES Wet Reflective

• 80 /- 10 mil groove or inlay on hot mat
• No primer unless extended season
• Finish with weighted roller
• Tape should be slightly lower than flush with
  pavement surface

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degussa/EnnisPathfinder

• methacrylate
• Static tube modified striping equipment
• In the tape price range
• 10-12 year expected life if grooved

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degussa/EnnisPathfinder

• 90 /- 10 mil deep groove
• Methacrylate very hard plastic
• Cost similar to tape
• 5-6 year expected life if not grooved
• Texture varies from 0 to 90 mil thick

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EpoplexGlomarc 90

• Anticipated install for Fall 2005
• LS 90 Polyurea base is on the Qualified
  Products List
• 90 /- 10 mil deep
• In the tape price range
• Competes with tape for price and durability if
  grooved

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EpoplexGlomarc 90

• Large beads special bead clusters
• Static tube modified striping equipment

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Polycarb Contrast Epoxynot wet reflective

• Previous installation
• Grooved in white epoxy on top of black epoxy
• 5-6 year expected life

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Notes

• Total costs approximately 39,000
• Materials and grooving
• Plus cost of Mn/DOT personnel
• Lighted Urban areas are probably not the most
  effective place to use this product.

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Additional Locations

• Ramsey County, CR 96
• Contact John Zdrazil, 651-248-0026,
  john.zdrazil_at_co.ramsey.mn.us
• 380 WR-ES and Glomarc 90
• Between Greenhaven and Rice
• Every other skip
• 500 East of Rice to McMenemy
• Every 3rd skip
• Mn/DOT Fall 2005
• 380 WR-ES Every 3rd skip
• I94 Eastbound Lane Line RP 71.4 to RP 83

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Pavement Marking Layout
380 WR-ES Tape
380 WR-ES Tape
380 WR-ES Tape
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TH 610 Test Segment List
For updates see http//www.dot.state.mn.us/traf
ficeng/pavement/2005WetReflectiveMarkingsFieldDemo
_files/frame.html
Material Direction Locations Installed
380 WR-ES East West 5.2-5.9, 8.2-8.9 8 groove lane drop 8.4-5.7 7 contrast groove skip 9/16/2005
Pathfinder East 8.2-9.5 4 groove skip 8.9-9.5 not grooved right edge 9/16/2005
Glomarc 90 East West 5.5-8.2 4 skip 8.7-8.1 8 groove lane drop 10/24/2005
Polycarb Epoxy East West 9.5-8.4 7 contrast groove skip Fall 2004
Standard Epoxy Both All other lines restriped with standard modified polyurethane epoxy 10/30/2005
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Data Observations

• 380 I ES
• Middle mobile retroreflectivity MCD
• Glomarc 90
• Highest mobile retroreflectivity MCD
• Largest spread between data points
• Pathfinder
• Lowest mobile retroreflectivity MCD
• Most tightly grouped

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Retroreflective Data (MCD)380 WR-ES 8 Lane Drop
1
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Retroreflective Data (MCD) 380 WR-ES 8 Lane
Drop 2
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Retroreflective Data (MCD) 380 WR-ES 7 Lane
Line Contrast
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Retroreflective Data (MCD) Glomarc 90 8 Lane
Drop
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Retroreflective Data (MCD) Glomarc 90 4 Lane
Line
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Retroreflective Data (MCD) Pathfinder 4 Lane
Line
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Retroreflective Data (MCD) Pathfinder 4 Not
Grooved Edge Line
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Retroreflective Data (MCD) Side by Side
Comparison
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Visual Observations

• Dry day observation
• 380 I ES not as white (slightly gray) as standard
  epoxy
• Pathfinder slightly whiter as standard epoxy
• Appears solid ahead of vehicle path Looks
  slightly worn out side windows
• Has taken some visible snow plow damage lt5
• Glomarc 90 about as white as standard epoxy

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Visual Observations

• Dry night observation
• 380 I ES not as bright as standard epoxy
• Glomarc 90 brighter than standard epoxy
• Pathfinder as bright as standard epoxy

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Dry Shots 1
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Dry Shots 2
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Dry Shots 3
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Dry Shots4
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Visual Observations

• Wet night observation
• 380 WR ES three times as bright
• Glomarc 90 1.5 times as bright
• Pathfinder least bright but brighter than
  standard epoxy

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Damp Shots 1
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Damp Shots 2
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Damp Shots 3
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Damp Shots 4
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Wet Shots 1
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Wet Shots 2
Wet Shots 2
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Wet Shots 3
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Wet Shots 4
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Future Plans

• Durability
• Surface application
• Grooved in
• Locations
• Cost? Ease of Installation? Quality control?
• Updates