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colored demarcation
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Section 39-x.xx. High Friction Surface Treatment (HFST)
NEW PRODUCT under evaluation.
- Robert Peterson, Division of Traffic Operations.
USE WITH 2010 STANDARDS.
- Review the requirements for Pilot Program documentation or similar.
- Pavement markers and delineation are to be removed before placing HFST, and replaced after HFST operations are completed. Provide temporary or permanent pavement markers when lanes are open to public traffic. Confirm if this is a separate contract item.
TREATMENT SPECIFICATION (Colorized Lane Demarcation)
GENERAL
1*. Edit for Portland cement concrete pavement if needed.
Summary
Specification for placing a colored demarcation onto an asphalt and or concrete pavement.
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The colored demarcation consists of a polymer resin binder with a 100% Recycled Pigmented glass aggregate topping.
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Submittals
Submit a colored demarcation Quality Control Plan (QCP)
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The colored demarcation QCP must include:
1. Schedule for the trial work and the production work colored demarcation
2. Description of equipment for placing colored demarcation
3. Description of equipment for measuring, mixing, placing, and finishing colored demarcation
4. Method for protecting areas not to receive colored demarcation
5. Cure time estimates for colored demarcation
6. Storage and handling of colored demarcation components
7. Disposal of excess colored demarcation and containers
8. Contingency plan for possible failure during the colored demarcation application
9. Name of the certified independent testing laboratory for the material components
10. An inspection of the automated application equipment prior to the award of the project
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Submit a material safety data sheet (SDS) for each shipment of colored demarcation components before use.
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Submit a certificate of compliance for the polymer resin binder and the 100% recycled pigmented glass aggregate topping.
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Have the polymer resin binder and the 100% recycled pigmented glass aggregate topping tested at a certified independent testing laboratory and then furnish the verifications to the Engineer that the materials meet all requirements listed in these specifications.
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Allow 2 working days for the Engineer to review each SDS submittal, certificate of compliance, the mix design and certified independent testing laboratory test results.
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Do not begin a trial colored demarcation until authorized by the Engineer in writing.
10*. Edit for Portland cement concrete pavement if needed. Edit the trial location information if needed.
Quality Control and Assurance
Complete a trial of colored demarcation on asphalt concrete pavement before starting colored demarcation production work and the inspection of the automated application equipment to the meet the specification prior to the commencement of the project.
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The trial colored demarcation must:
1. Be at least 12 feet wide by 20 feet long (or a width to suit the project parameters)
2. Be constructed using the same equipment as the production work.
3. Replicate field conditions, including ambient and surface temperatures, anticipated for the production work.
4. Demonstrate surface preparation requirements.
5. Remove pavement markers and delineation within the area to receive colored demarcation, for the lane and length involved, prior to placing polymer resin binder.
6. Document the settings on the applicator equipment, initial quantities of resin and aggregate topping, and unused quantities of resin and the 100% recycled pigmented aggregate topping remaining in the applicator equipment after applying the colored demarcation
7. Determine the initial set time for polymer resin binder in colored demarcation
8. Have temporary or permanent delineation in place when lanes are open to public traffic
9. Determine that work can be completed within time permitted in lane requirement charts as provided elsewhere in these special provisions.
10. Have a coefficient of friction of at least 0.65 when tested in conformance BS / BPN Tester
11. Demonstrate colored demarcation removal methods by removing the trial colored demarcation
12. Dispose of removed material.
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Do not begin production colored demarcation until authorized by the Engineer in writing after successful completion of the trial colored demarcation.
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If the coefficient of friction testing is below 0.65, the installer must correct or remove and replace the trial colored demarcation to meet or exceed the specified value of 0.65.
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MATERIALS
Polymer Resin Binder
Provide a polymer resin binder which holds the aggregate topping firmly in place, and which meets the following requirements.
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Polymer Resin Binder Requirements
Property / Requirement / Test MethodUltimate Tensile Strength / 2650 psi min. / ASTM D638
Elongation at break point / 30% min. / ASTM D638
Compressive Strength / 1600 psi min. / ASTM D695
Water Absorption / 1.0 % max. / ASTM D570
Shore D Hardness, min. 77ºF / 65-75 / ASTM D2240
Viscosity / 1000-3000 mPa / ASTM D2393
Gel Time, minutes / 15-45 min. / ASTM C881
Cure Rate / 3 hrs. max. / ASTM D1640, 0.2” thickness
Mixing Ratio / As recommended by manufacturer / N/A
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Aggregate Topping
Furnish a post 100% recycled pigmented glass aggregate. The aggregate topping is to be clean, dry, and free from deleterious matter. The aggregate topping must meet the following requirements and must be certified by the manufacturer as being completely post recycled with a three year fade free warranty.
Aggregate Topping Requirements: (100% recycled pigmented glass aggregate)
Technical Data
Characteristic: / 100% Recycled Pigmented Glass AggregateSpecific Gravity:
Bulk Density:
Volume/Ton:
Softening Point:
Shape:
Hardness:
Physical Composition:
Chemical Composition:
Aluminum / Other Oxides: / 2.5
.
Avg 86lb/ft3
Avg 26.5ft3
~1350°F
Sub-Angular, Non-Porous
6.0 Mohs
Amorphus Silica
Sodium Oxide:12-15%
Oxide: 1-2%
Color Retention: / 100%
Recycled Material: / 100%
Color Selection: / Varied, customized
Size Range Available: / 0.4-0.8mm, 0.8-1.2mm, 1.2-3mm, 3-9mm
Environmentally Sound: / 100% green post recycled material
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PRE-CONSTRUCTION
Pre-construction Conference
Schedule a pre-construction conference with the Engineer at a mutually agreed time and place. Make the arrangements for the conference facility. Be prepared to discuss the trial colored demarcation requirements.
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Attendance at the pre-construction conference is mandatory for:
1. Colored demarcation supplier
2. Colored demarcation foreman
3. Colored demarcation project superintendent
CONSTRUCTION
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Attendance during construction activities is mandatory for:
1. Colored demarcation supplier
2. Colored demarcation foreman
3. Colored demarcation project superintendent
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Surfaces must be clean, dry, and free of all dust, oil, debris and any other material that might interfere with the bond between the polymer resin binder material and existing surfaces. Adequate cleaning of all surfaces will be determined by the Engineer.
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Remove pavement markers and delineation within the area to receive colored demarcation, prior to placing polymer resin binder.
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Perform street sweeping before placing pavement markers and delineation.
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Temporary or permanent pavement markers and delineation must be in place before lanes are open to public traffic.
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The colored demarcation must conform to the following:
1. Do not apply colored demarcation to asphalt pavement surfaces that are less than 30 days old, unless sandblasted prior to application.
26.2. Consider beginning of work compared to seasonal weather conditions. Adjust days as needed.
2. Do not apply the polymer resin binder on a wet surface or when the ambient temperature is below 55°F or when the anticipated weather conditions would prevent the proper application of the surface treatment as determined by the Engineer.
3. Surface preparation work, surface temperature, placement of the colored demarcation must be in conformance with the binder supplier's specifications, these special provisions and as approved by the Engineer.
4. The minimum spread rate for polymer resin binder is 0.28-0.32 gal/sq yd.
5. The minimum spread rate of retained aggregate is 13-20 lb/sq yd.
6. Colored demarcation must be allowed to cure for the minimum duration as recommended by the supplier's specifications and during that time the application area must be closed to all vehicle and contractor equipment traffic.
7. The surface texture of the colored demarcation must be uniform and have a coefficient of friction not less than 0.65. Provide a correction plan for colored demarcation that fails to meet the coefficient of friction of 0.65. The correction plan may include correction of existing colored demarcation or remove & replace at the installers expense
26.8*. Use for PCC bridge deck.
Automated Continuous Application
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Automated continuous application shall be performed by an applicator vehicle with a minimum pigmented glass aggregate capacity of 40,000lbs and a minimum of 1200 gallons of the resin binder. The applicator shall continuously mix, meter, monitor and apply the resin binder and high friction aggregate in one continuous application pass.
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The applicator vehicle shall be equipped with an inbuilt data management unit which is capable of producing real time data flow showing the volume of resin, the resin mil thickness on average throughout the application width, the volume of aggregate applied throughout the application width. The automated continuous application vehicle will have continuous pumping and portioning devices that blend the polymer binder within a controlled system. The polymer binder shall be blended and mixed in the ratio per the manufacturer’s specification (+/- 2% by volume); the polymer binder shall be continuously applied once blended. The application vehicle should be capable of applying the minimum polymer binder spread rate.
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The high friction 100% recycled pigmented glass aggregate shall be applied by the same automated continuous application vehicle that applies the resin binder to the pavement section. The automatic aggregate spreader shall be capable of applying up to a continuous 12 foot width application. The high friction recycled pigmented glass aggregate shall be applied within 3 seconds (+/- 1 sec) of the base polymer binder application onto the pavement section, from a maximum height of 12 inches from above the pavement section surface, at the minimum spread rate.
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No exposed wet spots of the polymer binder shall be visible once the recycled red pigmented aggregate is installed. The operations should proceed in such a manner that will not allow the mixed material to separate, cure, dry, be exposed or otherwise harden in such a way as to impair retention and bonding of the high friction surfacing 100% recycled pigmented glass aggregate, walking, standing or any form of contact or contamination with the wet uncured resin will result in that section of resin and pigmented glass aggregate being removed and replaced at the installers expense.
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The excess 100% recycled pigmented glass aggregate can be reused; the aggregate shall be reclaimed by a mechanical sweeper, the recovered aggregate must be clean, uncontaminated and dry.
35*. Delete 2nd sentence if not on highway ramps.
Excess and lose 100% recycled pigmented glass aggregate must be removed from the traveled way and shoulders by street sweeping. Application of colored demarcation requires a second street sweeping 36 hours after application.
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Utilities, drainage structures, curbs, and any other structures within or adjacent to the treatment location must be protected against the application of the colored demarcation materials.
37*. Use if applicable.
38*. Use if applicable.
39*. Delete if no expansion joints or deck drains.
41*. Evaluate if pavement markers and delineation require a separate contract item. If so, add clarification here for that work.
Ruby Lake Glass, LLC ● PO Box 611, Richfield Springs, NY 13439 ● (607) 435-8158