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971 -5 . 5 . 2 Retroreflectivity : The white and yellow pavement markings shall attain an <br /> initial retroreflectance of not less than 450 mcd/lx • m2 and not less than 350 mcd/lx , m2 , <br /> respectively. The retroreflectance of the white and yellow pavement markings at the end of the <br /> three year service life shall not be less than 150 mcd/lxOm2 . <br /> 971 -5 . 5 .3 Durability : Durability is the measured percent of thermoplastic material <br /> completely removed from the pavement . The thermoplastic material line loss must not exceed <br /> 5 . 0 % at the end of the service life . <br /> 971 -5 . 6 Application Properties : Application properties shall meet the requirements of <br /> Section 711 . <br /> 971 -5 . 7 Packing and Labeling : The thermoplastic material shall be packaged in suitable <br /> biodegradable or thermo- degradable containers which will not adhere to the product during <br /> shipment and storage . The container of thermoplastic material shall weigh approximately 50 lb . <br /> The label shall warn the user that the material shall be heated in the range as recommended by <br /> the manufacturer . <br /> 971 -6 Preformed Thermoplastic Materials for Traffic Stripes . <br /> 971 -6 . 1 General : Upon cooling to normal pavement temperature , these materials shall <br /> produce an adherent, reflective pavement marking capable of resisting deformation by traffic . { <br /> The manufacturer shall have the option of formulating the material according to his own <br /> specifications . However, the requirements delineated in this Specification and Section 711 shall <br /> apply regardless of the type of formulation used. The pigment, glass spheres , and filler shall be <br /> well dispersed in the resin . The material shall be free from all skins , dirt and foreign objects . <br /> 971 -6 . 2 Composition : The preformed thermoplastic shall consist of high quality <br /> materials , pigments and glass spheres or other reflective material uniformly distributed <br /> throughout their cross - sectional area, with a reflective layer of spheres or other reflective <br /> material embedded in the top surface . <br /> 971 -6 .3 Glass Spheres . Material shall contain no less than 30 % glass spheres by weight . <br /> 971 -6 .4 Color : Materials shall meet the performance requirements specified in 971 - 1 and <br /> the following additional requirements . The initial luminance factor, Cap Y , shall not be less i <br /> than 55 . The in- service luminance factor at the end of the three year service life shall not be less <br /> than 35 when measured outside the wheel paths . <br /> 971 -6 . 5 Physical Requirements : Laboratory samples shall be prepared in accordance <br /> with ASTM D 4960 and shall meet the following criteria : <br /> Property Test Method Minimum Maximum <br /> G <br /> Softening Point ASTM D 36 195 °F - <br /> Low Temperature AASHTO T 250 Pass - <br /> Stress Resistance <br /> Indentation Resistance ASTM D 2240 * 40 75 <br /> Shore Durometer, A2 <br /> Impact Resistance ASTM D 256 , Method A * * 1 . 0 N • m - <br /> *The durometer and panel shall be at 110°F with a 4 .4 lb load applied. Instrument measurement shall be taken after 15 seconds <br />. <br /> * * The testspecimen for ASTM D 256 shall be 1 in. x 1 in. x 6 in . and shall not be notched. <br /> 971 -6 . 5 . 1 Retroreflectivity : The white and yellow pavement markings shall <br /> attain an initial retroreflectance of not less than 300 mcd/lx - m2 . The retroreflectance of the white <br /> pavement markings at the end of the three year service life shall not be less than 150 mcd/lx • m2 . <br /> -229 - <br /> FPID ( S ) : 423186 - 1 - 58 - 01 <br />