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N <br />ill] <br />u <br />r"'I ��t <br />971 -4.4 Application Properties: Application properties shall meet the requirements <br />of Section 710. <br />971 -4.5 Packaging and Labeling: The traffic paint shall be placed in 55 gal <br />[210 liter] open -end steel drums with a re- usable multi -seal sponge gasket. No more than <br />50 gal [190 liters] of material shall be placed in any drum to allow for expansion during <br />transport and storage. <br />971 -5 Thermoplastic Materials for Traffic Stripes. <br />971 -5.1 General: Upon cooling to normal pavement temperature, these materials <br />shall produce an adherent, reflective pavement marking capable of resisting deformation by <br />traffic. The manufacturer shall utilize alkyd based materials only and shall have the option <br />of formulating the material according to his own specifications. However, the requirements <br />delineated in this Specification and Section 711 shall apply regardless of the type of <br />formulation used. The pigment, glass spheres, and filler shall be well dispersed in the resin. <br />The material shall be free from all skins, dirt and foreign objects. <br />971 -5.2 Composition: <br />Component <br />Test Method <br />White <br />Yellow <br />Binder <br />ASTM D 570 <br />20.0% minimum <br />20.0% minimum <br />Ti02, Type II Ructile <br />ASTM D 476 <br />10.0% minimum <br />- <br />Glass Spheres <br />AASHTO T 250 <br />40.0% minimum <br />40.0% minimum <br />Yellow Pigment <br />- <br />minimum per <br />manufacturer <br />Calcium Carbonate and Inert Filler (- <br />200 mesh [ -75 µm] sieve) <br />30.0% maximum <br />37.5% maximum <br />Percentages are by weight. <br />The alkyd /maleic binder must consist of a mixture of synthetic resins (at least one <br />synthetic resin must be solid at room temperature) and high boiling point plasticizers. At <br />least one -half of the binder composition' must be 100% maleic - modified glycerol of rosin <br />and be no less than 15% by weight of the entire material formulation. <br />971 -5.3 Glass Spheres: The glass spheres in the intermix shall consist of 50% Type <br />1 and 501/o Type 3. Glass spheres shall meet the requirements of 971 -2. <br />971 -5.4 Sharp Silica Sand: Sharp silica sand used for bike lane symbols and <br />pedestrian crosswalk lines shall meet the following gradation requirements: <br />Sieve Size % Passing <br />20 1850 [trn] 100 <br />50 [300 µrn] 10 to 10 <br />971 -5.5 Physical Requirements: Laboratory samples shall be prepared in accordance <br />with ASTM D 4960 and shall meet the following criteria: <br />Property <br />Test Method <br />Minimum <br />Maximum <br />Water Absorption <br />ASTM D 570 <br />- <br />0.5% <br />Softening Point <br />ASTM D 36 <br />195 °F [90 °C] <br />- <br />Low Temperature <br />AASHTO T 250 <br />Pass <br />March 2007 01000 -191 03- 4122.D <br />