1.  Single Component Products TT-P-1952E - Waterborne traffic paint TT-P-1952E - Waterborne traffic paint A-A-2886A - Solvent traffic paint A-A-2886A - Solvent traffic paint Relatively simple application Relatively simple application  Plural Component Products Epoxy Paint Methyl-Methacrylate paint More complicated application More durable than conventional paints Coatings

2. TT-P-1952E (waterborne) is the most commonly used coating in the U.S. industry. Coatings

3. Properties of TT-P-1952E Low VOC (volatile organic compound). Low VOC (volatile organic compound). Durable when applied properly. Durable when applied properly. Simple to clean up with water. Simple to clean up with water. Excellent glass bead retention. Excellent glass bead retention. Highly visible colors. Highly visible colors. Type I – dries in 10-15 minutes under 85% humidity. Type I – dries in 10-15 minutes under 85% humidity. Type II – fast dry (less than 5 minutes). Type II – fast dry (less than 5 minutes). Type III – is a high-build acrylic. Type III – is a high-build acrylic. Non-hazardous and non-flammable. Non-hazardous and non-flammable. Waterborne paint was developed in response to the rising demand for more environmentally friendly pavement marking products. Coatings

4. General Precautions Waterborne paint cannot be used in Waterborne paint cannot be used in galvanized, brass, aluminum, or steel galvanized, brass, aluminum, or steel equipment; stainless steel only. equipment; stainless steel only. Paint must be prevented from freezing Paint must be prevented from freezing and should be stored between 50-90° F. and should be stored between 50-90° F. Paint should not be thinned. Paint should not be thinned. Clean equipment after each use. Clean equipment after each use. Coatings

5. Application Conditions Material coverage varies due to equipment speed, Material coverage varies due to equipment speed, surface porosity, and material viscosity. surface porosity, and material viscosity. Coatings Application temperatures: Application temperatures: - Air temperature should be 45-50° F and rising. - Air temperature should be 45-50° F and rising. - Surface temperature should be greater than 55° F, and 5° higher than the dew point. 5° higher than the dew point. - Relative humidity should be less than 85% (or expect longer dry times. longer dry times. - Heating or painting above 110° F is not recommended. Surface must be visually dry. Surface must be visually dry. Do not paint in windy conditions, unless windscreens Do not paint in windy conditions, unless windscreens are used. are used.

6. Common Problems Paint bonds better to the asphalt than the asphalt does Paint bonds better to the asphalt than the asphalt does to itself, causing premature pavement deterioration. to itself, causing premature pavement deterioration. Coatings Discoloration (iron staining) from iron present in Discoloration (iron staining) from iron present in soil and/or pavement aggregate. soil and/or pavement aggregate. Bleed through of asphalt into white paint makes the Bleed through of asphalt into white paint makes the paint appear brown. A primer coat (200-250 SF/gal) paint appear brown. A primer coat (200-250 SF/gal) seals the oils from the coating. seals the oils from the coating. Flaking and peeling of new coating due to insufficient Flaking and peeling of new coating due to insufficient surface preparation. surface preparation.

7. Curing of Coatings Paint temperature – the higher the temp, the faster the cure. Paint temperature – the higher the temp, the faster the cure. Pavement temperature – the higher the temp, the faster Pavement temperature – the higher the temp, the faster the paint will cure. the paint will cure. Humidity – the higher it is, the slower the cure. Humidity – the higher it is, the slower the cure. Wind speed – the higher the wind speed, the faster the Wind speed – the higher the wind speed, the faster the paint will cure. paint will cure. Paint thickness – the thicker the paint, the slower the cure. Paint thickness – the thicker the paint, the slower the cure. Markings are cured when all the chemical reactions stop. That means all the water and solvents have evaporated. The No-track condition usually comes sooner. Coatings

8. Intercoat Adhesion Intercoat Adhesion of waterborne traffic paints can be a problem if the application parameters and dry time recommendations are not followed. For Fast Dry Waterborne paints, the minimum application temperature is 50°F and rising. For both paints, the temperature must be at least 5°F above the dew point and be maintained during the dry through. For Low Temperature Application Waterborne paints, the minimum application temperature is 35°F and rising. First coat must be completely cured (24 hours) before application of a second coat or new layer.

9. Terminology of Marking Materials  Shelf Life is the usable period when the integrity of the paint is stable. paint is stable.  Solvents transport solid portions of the mixture (pigments, resins, fillers) during manufacture and application. resins, fillers) during manufacture and application.  Pigments are used to provide color, UV stability, wear resistance, and hiding. They are the most expensive ingredient in the paint. and hiding. They are the most expensive ingredient in the paint.  Fillers (or extenders) are relatively inexpensive, and are used to give paint its bulk and increase durability. to give paint its bulk and increase durability.  Additives are used to prevent ingredients from settling and skinning in the container, as well as aid drying, disperse skinning in the container, as well as aid drying, disperse pigments, prevent freezing, adhesion, etc. pigments, prevent freezing, adhesion, etc. Coatings

10. Compatibility of Coatings  New coating must be compatible with existing coating. Coatings