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Synthetic Colored Road Surfacing
FDOT Material Specification # 0523-0010 Patterned/ Textured Pavement |
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1. Surface Treatment Composition
1.1 Omnigrip CST – Colored Surface Treatments for Highways shall consists of a film of tinted binder applied to a sound substrate and covered with Synthetic recycled and colored aggregate to provide a coloured, textured and durable matrix of skid resistance.
1.2 Proposed treatments shall provide a minimum skid resistance value of 35 FN 40 R when tested with a locked wheel friction tester according to ASTM : E274 “Standard Test Method for Skid Resistance of Paved Surfaces Using a full-scale Tire”.
1.3 Installation certifications will only be provided to licensed installers with prior approval and valid certification from ATLANTIC PAVING CO., INC. of Miami, FL. ( Ph: (305) 513 8632 / atlanticpaving.com ).
1.4 Brick patterns can be applied to the surface thru the use of paper or plastic stencils these can be made in a variety patterns and depending on the design chosen the use of plastic may be preferred over paper.
2. Resin Binder
2.1 The applied resin binder shall be OMNIGRIP EP 176 as supplied by ATLANTIC PAVING CO., INC. (Phone:- (305) 513 8632 / atlanticpaving.com ) being comprised of an thermosetting modified epoxy compound suitable for both concrete & asphalt substrates or approved equivalent in accordance with Clause 2.2.
2.2 Any proposed equivalent binders shall:
2.2.1 be of an amine epoxy base
2.2.2 be comprised of a 2 component epoxy resin certified by the manufacturer to be suitable for color pigmenting to meet the specified AS Color as required to obtain a depth of colour in coloured applications
2.2.3 upon mixing and application to the pavement surface have a maximum in service time of 4 hours @ an ambient surface temperature of 70° F.
2.2.4 demonstrate the technical property requirements in Table 1
Table 1: Test Parameters
Test |
Parameter |
Test Method |
Requirement |
Binder Elongation At Break |
7 days @ 23° Celsius |
BS 2782 |
>= 30% |
Binder Tensile Strength |
7 days @ 23° Celsius |
BS 2782 |
>= 10.5 N/mm² |
Binder Tensile Adhesion |
Stress at –10+/- 20C |
TRL 176 Appendix J |
>= 1.0 (Nmm-2) |
Binder Tensile Adhesion |
Stress at 20+/- 20C |
TRL 176 Appendix J |
>= 0.5 (Nmm-2) |
2.3 The contractor shall supply to the superintendent written evidentiary documentation for any proposed alternative in accordance with Clause 2.2
3. Aggregate
3.1 The preferred coloured aggregate dressing shall be Synthite coloured aggregate, as supplied by( ATLANTIC PAVING CO., INC. Ph: (305) 513 8632/ atlanticpaving.com ) or approved equivalent in accordance with Clause 3.2.
3.2 Proposed aggregate alternatives submitted for approval shall:-
3.2.1 be clean and free from foreign matter
3.2.2 be of synthetic construction manufactured with a translucent crystalline internal matrix.
3.2.3 have been colour treated with a UV stable pigmentation process to provide a depth of colour consistent with the owners/ project Specifications
3.2.4 be of a nominal sieve grading of 1- 3 mm
3.2.5 have a certified PSV (Polished Stone Value) or PAFV (Polished Aggregate Friction Value) ≥ 60
3.2.6 have a certified AAV (Aggregate Abrasion Value) ≤ 10
3.2.7 have been subjected to CSIRO independent accelerated Xenon Arc weathering testing in accordance with SAE J1960-04 and obtained a certified Gray Scale Colour Change Assessment of no less than 4.
3.2 The contractor shall supply to the superintendent evidentiary documentation for any proposed alternative in accordance with Clause 3.2.
3.3 Production of an original Synthite batch number compliance certificate as issued by ATLANTIC PAVING CO., INC. shall be considered as full documentary compliance with Clause 3.2.
3.4 Traditional quarried stone aggregates which have been artificially colored or otherwise shall not be permitted.
4. Surface Preparation
4.1 CONCRETE
4.1.1 New concrete should be water cured for at least 28 days, well compacted and finished, preferably by power floating or trowelling to give a dense smooth finish.
4.1.2 Old concrete must be structurally sound, all loose and deteriorated areas shall be replaced, spalled areas repaired and any existing coatings must be removed.
4.1.3 The concrete substrate must have a moisture content no greater than 5% by volume and the surface must be clean, free from dust, oil, grease or other contaminates that may impair the adhesion of the system.
4.1.4 All surface laitance must be removed by captive shot blasting, diamond grinding, hydro blasting or other approved methods.
4.1.5 Concrete surfaces shall be suitably primed in accordance with manufacturer’s instructions.
4.2 ASPHALT
4.2.1 Asphalt surfaces shall be vigorously treated to remove dust laitance and other loose material. The treatment shall consist of the application of Hot Compressed Air or dry surface abrasive blasting as determined by a site inspection.
4.2.2 Unless otherwise directed by the engineer any newly laid asphalt surface shall be trafficked for a period of 6 weeks prior to surface binder application.
4.3 Any visible oil not removed during the process described in clause 4.1 / 4.2 shall be removed by washing and scrubbing the surface with a mild detergent solution and flushing with clean water. The surface shall then be allowed to dry prior to surface application of the binder.
4.4 Unless otherwise directed by the engineer all existing road markings, rpm’s etc.. Shall be suitably masked.
5. Hand Applied Batch Mixing of Binder
5.1 Binder components shall be batched and mixed in accordance with the manufacturer’s instructions. Components shall be accurately proportioned by weight or volume and thoroughly mixed using a mechanical mixer.
6. Application
6.1 The binder shall be applied by squeegee onto a dry surface at a minimum rate of (20- 23 sq ft per gallon) which will vary according to the surface texture and porosity. On a smooth closed textured surface the amount of binder shall not be less than the manufacturers requirements as required to hold the aggregate permanently in position.
6.2 The temperature of binder components heated to facilitate mixing or spray application shall be measured using a temperature gauge accurate to ± 2° and shall not exceed the maximum temperature recommended by the resin manufacturer. Heated binders shall be allowed to cool prior to the application of aggregate.
6.3 Following binder application, aggregate shall be broadcast to cover the binder uniformly and to excess, in accordance to the manufacture's instructions. Rolling of aggregate shall not be permitted under any circumstances.
6.4 No encapsulation of the aggregate shall be permitted and no colour coating or sealer shall be applied to the aggregate after application.
6.5 Immediately following application any masking material shall be removed together with any binder or aggregate adhering to same. During the cure period no disturbance or trafficking shall be permitted.
6.6 Upon initial curing all excess aggregate shall be removed by a vacuum sweeper or equivalent means.
7.0 Material delivery, Storage and Handling
Omnigrip CST products shall be delivered to the site in clearly labelled, sealed 5- gallon units or 250 gallon IBC’s
Synthite aggregate to be delivered in clearly labelled 50 lb bags or 2,200 lb super sacks.
Materials to be kept dry and stored at room temperature, out of direct sunlight.
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