3M All Weather Paint User Manual

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Transportation Safety Division

3M™ All Weather Paint

Product Bulletin AWP April 2020

Replaces Product Bulletin All Weather Paint Dated January 2010

1 Description

3M™ All Weather Paint (“AWP”) is a traffic paint system consisting of high-build waterborne paint, 3M Connected Roads All Weather Elements (“Elements”) and second drop glass beads. AWP incorporates an optical technology intended for use on high-build waterborne traffic marking paint and utilizes second drop glass beads to produce pavement markings. Designed for use as maintenance markings on secondary highways, AWP provides the highest level of wet reflective performance for a drop-on bead system.

1.1 3M Connected Roads All Weather Elements

Elements consist of an outer layer of microcrystalline ceramic beads partially embedded into composite cores to provide optimal performance under dry and/or wet conditions. Elements are specifically treated for application onto the high-build paint, as the first drop of a double-drop system. Elements are visible when dry, during rainfall, and after rainfall, providing marking visibility for motorists under all weather conditions.

1.2 Paint

The paint component of AWP is manufactured with a high build polymer emulsion. All weather visibility, ease of clean-up, enhanced worker safety, and reduced disposal costs are inherent features of AWP.

AWP is an ideal pavement marking system for situations where waterborne paint equipment is already available.

1.3 Second Drop Glass Beads

A second drop of glass beads is used to improve the durability of the finished marking and provide increased visibility during dry conditions. Improved dry reflectivity can be expected as the size and quality of the second drop bead is increased.

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2 Specifications

2.1 Retroreflectivity

Average initial coefficient of retroreflected luminance values are shown in Table 1. Some variance should be expected across applications, and all values represent initial properties unless otherwise noted.

Table 1. Typical average initial coefficients of retroreflected luminance

Property/test method

Retroreflectivity, Dry Average ASTM E1710

Retroreflectivity, Wet Recovery Average ASTM E2177

Retroreflectivity, Wet Continuous Average ASTM E2832

a. Typical retroreflectivity results represent average performance for smooth pavement surfaces. Results may vary due to differences in pavement type and surface roughness. Increased Elements drop rate may be necessary to compensate for increased surface area characteristic of rough pavement surfaces. Wet retroreflectivity testing of markings applied in grooved or recessed surfaces is difficult since water pools in recesses. In such cases, consider installing sections of pavement markings for testing on either a smooth section of the pavement surface, or on rigid panels (50 mil aluminum). If markings are applied to panels, allow them to cure, then move them carefully for retroreflectivity testing - make sure to protect the optics when transporting.

Series Dry, Dry E, Dry M

White: 1250 Yellow: 900

N/A

Series 50, 50E, 50M

White: 700 Yellow: 525

White: 275 Yellow: 225

White: 200 Yellow: 150

[mcd/m2/lx].

Series 90, 70E, 70M

White: 500 Yellow: 375

White: 375 Yellow: 300

White: 275 Yellow: 225

Series Wet, Wet E, Wet M

N/A

White: 400 Yellow: 325

White: 300 Yellow: 250

Initial retroreflective performance of AWP pavement markings shall be measured within 7 days of application.

3 Installation

The installer of the markings is required to comply with the following installation conditions and procedures.

3.1 Weather and Pavement Conditions

AWP should be applied within guidelines and application criteria established in 3M Information Folder 5.22. For smooth dense pavement surfaces optimal performance is achieved when the paint is applied at a wet thickness of 25 mils (635 micron).

3.2 Equipment

AWP must be installed using a double-drop bead system. Elements are installed as the first drop of the twodrop system. Elements must be installed at a truck speed of 8 mph or less to prevent rolling and paint pick-up by the Element. Contact your 3M Application Engineer for additional information regarding equipment modifications.

3.3 Paint Application Rates

Paint should be applied at a wet thickness of 25 mils (635 micron) and one gallon of paint will cover a distance of 190 feet (58 meters) with a four inch (100 mm) line on a smooth surface. It may be necessary to increase paint usage rate for rough or open pavement surfaces.

3.4 Marking Dimensions

Marking dimensions shall conform to the Manual on Uniform Traffic Control Devices and project specifications.

3.5 Placement of Elements and Beads

Elements and beads must be dropped into waterborne paint such that the Elements and beads do not roll, thus ensuring that their exposed portions are free of paint material.

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3.6 Elements Application

Minimum Elements application rates for smooth or densely-packed pavement surfaces are presented in Table 2. The stated application rates provide good initial retroreflectivity and match the longevity, or restripe frequency, of pavement marking paint. More heavily traveled roads will require greater quantities of Elements to achieve similar longevities.

Rough pavement surfaces (open-graded mixes, large stone mixes, etc.) can have up to 50% more surface area than smooth surfaces. As a result, rough pavement surfaces require greater quantities of marking materials (paint, Elements, and second-drop beads) than smooth surfaces to achieve similar coverages.

Table 2. 3M Connected Roads All Weather Elements application rates for high build paint.

Minimum for Initial Performance

Units

Pounds per 4-inch lineal foot 0.009 0.018 Pounds per mile, 4-inch width 46.5 93 Grams per 4-inch lineal foot 4 8 Grams per square foot 12 24 Grams per square meter 130 260 Pounds per gallon - 25 mils ~190 ft/gal 1.7 3.4 Pounds/100 Sq ft 2.6 5.2

or Temporary Markings on

Smooth Surface

Minimum for More Durable

Markings on Smooth Surface

3.7 Second Drop Glass Beads

A second drop of glass beads is necessary to improve physical characteristics, durabilities of finished markings, and assure expected track-free times. Glass beads usually provide some measure of increased visibility during dry conditions as well.

Many different glass bead gradations are currently used for pavement markings. Table 3 presents glass bead gradations appropriate for AWP applications.

Table 3. Typical gradations of second drop glass beads.

Common bead types with liquid pavement markings

Bead gradations - mass percent passing (ASTM D1214)

Missouri

US Mesh Microns

12 1700 14 1410 16 1180 18 1000 65–80 20 850 90–97 25 710 30 600 60–87 0–30 40 425 50 300 0–15 0–5 70 212 0–5 80 180 100 150

a. A minimum of 15% of the total weight shall be from direct melt glass. All +30 US mesh beads shall be 85% minimum rounds and have a minimum crush strength of 30 lbs. in accordance with ASTM D1213.

Specification

Type P

18/50 (Utah) Performance Specification

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Typical glass bead application rate ranges are shown in Table 4.

Table 4. Typical glass bead application rates.

High Build

Binder Type Units

Pounds per 4" lineal foot 0.026–0.053 Grams per 4" lineal foot 12–24 Pounds per gallon - 25 mils

~190 ft/gal Pounds/100 Sq ft 7.94–15.87

Preferred bead type

Waterborne Paint

5.1–10.2

Missouri Type P

or 18/50 (Utah)

3.8 Quality of Second Drop Glass Beads

The required glass beads shall have an index of refraction of 1.5 when tested by the immersion method at 25 ºC (77 ºF). The glass beads shall be surface treated for optimal performance with the liquid binder traffic marking. The glass beads shall have a minimum of 70% rounds as measured according to ASTM D1155. The surfaces of the glass beads shall be free of pits and scratches. The glass beads retained on a #40 U.S. mesh sieve (425 microns) shall have a minimum crush strength of 30 pounds, in accordance with ASTM D1213.

4Storage

Store AWP components in a cool, dry, well ventilated area indoors. Use within one year of receipt. Follow glass bead manufacturer and paint manufacturer recommendations for storage. Paint must not be allowed to freeze.

5 Health and Safety Information

Read all health hazard, precautionary, and first aid statements found in the Safety Data Sheets (SDS), Article Information Sheets, and products labels of any materials for important health, safety, and environmental information prior to handling or use. To obtain SDSs and Article Information Sheets for 3M products, go to 3M.com/SDS, contact 3M by mail, or for urgent requests call 1-800-364-3577.

6 Quality Policy and Warranty Information

6.1 3M Basic Product Warranty

3M has no control over application methods or the quality of the surface to which materials are applied. Therefore, 3M's warranty for AWP shall be limited to the quality of materials supplied.

AWP is warranted (“Basic Warranty”) to be free of defects in materials and manufacture at the time of shipment and to meet the specifications stated in this product bulletin. If AWP is proven not to have met the Basic Warranty on the shipment date, then a buyer’s exclusive remedy, and 3M’s sole obligation, at 3M’s option, will be refund or replacement of AWP.

6.2 Disclaimer

THE 3M WARRANTY IS MADE IN LIEU OF ALL OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OR CONDITION OF MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE, OR ANY IMPLIED WARRANTY ARISING OUT OF A COURSE OF DEALING OR OF PERFORMANCE, CUSTOM, OR USAGE OF TRADE.

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6.3 Limitation of Liability

Except for the limited remedy stated above, and except where prohibited by law, 3M will not be liable for any loss or damage arising from the use of or the inability to use the Elements or any 3M product, whether direct, indirect, special, incidental, or consequential damages (including but not limited to lost profits, business, or revenue in any way), regardless of the legal theory asserted including warranty, contract, negligence, or strict liability. Before using, the user shall determine the suitability of Elements for his/her intended use and the user assumes all risk and liability whatsoever in connection therewith.

3M assumes no responsibility for any injury, loss, or damage arising out of the use of a product that is not of our manufacture. Where reference is made in our literature to a commercially available product made by another manufacturer (for example, application equipment), it shall be the user's responsibility to ascertain its effectiveness and to take any precautionary measures required for its use, as outlined by the product's manufacturer.

7 Other Product Information

Always confirm that you have the most current version of the applicable product bulletin, information folder, or other product information from 3M’s Website at http://www.3M.com/roadsafety

8 Literature References

3M IF 5.22 All Weather Paint Application Guidelines for Elements and Glass Beads on a High-Build

Waterborne Traffic Marking Paint

3M IF 5.23

3M PB CR AWE

3M™ Connected Roads All Weather Elements Application Guidelines for 3M Connected Roads All Weather Elements 3M™ Connected Roads All Weather Elements

ASTM Test Methods are available from ASTM International, West Conshohocken, PA.

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For Information or Assistance Call: In Canada 1

Interne

1-800-553-1380

Call:

-800-3M HELPS (1-800-364-3577)

http://www.3M.com/roadsafety

3M, Science. Applied to Life., and Stamark are trademarks of 3M. Used under license in Canada. Simple Green is a registered trademark of Sunshine Makers, Inc. All other trademarks are the property of their respective owners.

3M assumes no responsibility for any injury, loss, or damage arising out of the use of a product that is not of our manufacture. Where reference is made in literature to a commercially available product, made by another manufacturer, it shall be the user’s responsibility to ascertain the precautionary measures for its use outlined by the manufacturer.

Important Notice

All statements, technical information and recommendations contained herein are based on tests we believe to be reliable at the time of this publication, but the accuracy or completeness thereof is not guaranteed, and the following is made in lieu of all warranties, or conditions express or implied. Seller's and manufacturer's only obligation shall be to replace such quantity of the product proved to be defective. Neither seller nor manufacturer shall be liable for any injury, loss or damage, direct, indirect, special, or consequential, arising out of the use of or the inability to use the product. Before using, user shall determine the suitability of the product for his/her intended use, and user assumes all risk and liability whatsoever in connection therewith. Statements or recommendations not contained herein shall have no force or effect unless in an agreement signed by officers of seller and manufacturer.

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