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<br />----- ------ <br /> <br />..., <br /> <br />- <br /> <br />., <br /> <br />The material, when formed into traffic stripes, must be readily renewable by <br />placing an overlay of new material directly over an old line of the same material. Such new <br />material shall bond itself to the old line in a manner such that no splitting or separation <br />occurs. <br /> <br />. <br /> <br />.., <br /> <br />.., <br /> <br />Overlay stripe thicknesses shall be measured as specified in Section 711 for <br />refurbishing of thermoplastic stripes. <br />971-6.8 Packing and Marking: The thermoplastic material shall be packed 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 <br />50 Ib [23 kg]. The label shall warn the user that the material shall be heated in the range <br />as recommended by the manufacturer. <br /> <br />. <br /> <br />.., <br /> <br />. <br /> <br />. <br /> <br />., <br /> <br />,.., <br /> <br />971-7 Preformed Thermoplastic Materials for Traffic Stripes. <br />971-7.1 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 have the option of formulating the material according to his <br />own specifications. However, the requirements delineated in this Specification and <br />Section 711 shall apply regardless of the type of formulation used. The pigment, glass <br />spheres, and filler shall be well dispersed in the resin. The material shall be free from all <br />skins, dirt and foreign objects. <br />971-7.2 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 />971-7.3 Glass Spheres: White and yellow material shall contain no less than 30% <br />glass spheres by weight. The glass spheres shall meet the requirements of 971-2. <br />971-7.4 Color: Materials shall meet the performance requirements specified in 971- <br />1 and the following additional requirements. The initial luminance factor, Cap Y, shall not <br />be less than 55. The in-service luminance factor at the end of the three year service life <br />shall not be less than the requirements in ASTM D 6628 when measured outside the wheel <br />paths. <br />971-7.5 Physical Requirements: Laboratory samples shall be prepared in accordance <br />with ASTM D 4960 and shall meet the following criteria: <br /> <br />. <br /> <br />r"'1 <br /> <br />. <br /> <br />II <br /> <br />. <br /> <br />II <br /> <br />. <br /> <br />,., <br /> <br />. <br /> <br />.., <br /> <br />. <br /> <br />. <br /> <br />,.., <br /> <br />.., <br /> <br />Property Test Method Minimum Maximum <br />Softening Point ASTM D 36 1950F [900C] - <br />Low Temperature AASHTO T 250 Pass - <br />Stress Resistance <br />Indentation ASTM D 2240 * 40 75 <br />Resistance Shore Durometer, A2 <br />Impact Resistance ASTM D 256, Method A ** 1.0 N'm - <br />*The durometer and panel shall be at 1100F [450C] with a 4.4 Ib [2.0 kg] load applied. <br />Instrument measurement shall be taken after 15 seconds. <br />* *The test specimen for ASTM D 256 shall be 1 in. x 1 in. x 6 in. and shall not be <br />notched. <br /> <br />. <br /> <br />..., <br /> <br />. <br /> <br />. <br /> <br />..., <br />. <br /> <br />..., <br /> <br />- <br /> <br />II <br /> <br />971-7.5.1 Retroreflectivity: The white and yellow pavement markings shall <br />attain an initial retroreflectance of not less than 300 mcd/lx'm2 and not less than 250 <br /> <br />. <br /> <br />09/09 <br /> <br />01000-194 <br /> <br />03-4122.F <br /> <br />..., <br /> <br />. <br />