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Table 336A <br /> Asphalt Rubber Binder <br /> Binder Type ARB 5 ARB 12 ARB 20 <br /> Rubber Type TYPE A (or B)( ' ) TYPE(or <br /> TYPE C (z) <br /> (or A) (or B or A) <br /> Viscosity Range(4) 4 . 0 - 6 . 0 Poises 10 . 0 - 15 . 0 Poises 15 . 0 - 20 . 0 Poises <br /> @ 300OF @ 300OF @ 350OF <br /> 1 ) Use of Type B rubber may require an increase in the mix temperature in order to offset higher viscosity values . <br /> 2) Use of finer rubber could result in the reduction of the minimum reaction time. <br /> 3 ) Conversions to standard 60°F are as specified in 300-9 .3 . <br /> 4) FM 5 -548 , Viscosity of Asphalt Rubber by Rotational (Dip-N-Read) Viscometer or AASHTO T 316, Viscosity <br /> Determination of Asphalt Binder Using Rotational Viscometer, <br /> OTE : The Contractor may adjust the minimum reaction time if approved by the Engineer depending upon the temperature, size <br /> f the ground tire rubber and viscosity measurement determined from the asphalt rubber binder material prior to or during <br /> production. Apply the asphalt rubber binder for use in membrane interlayers within a period of six hours, unless some form of <br /> orrective action such as cooling and reheating is approved by the Engineer, <br /> 3364 Equipment. <br /> Use blending equipment that is designed for asphalt rubber binder and capable of <br /> producing a homogeneous mixture of ground tire rubber and asphalt binder meeting the <br /> requirements of Table 336- 1 . Use a batch type or continuous type blending unit that provides for <br /> sampling of the blended and reacted asphalt rubber binder material during normal production and <br /> provides for accurate proportioning of the asphalt binder and ground tire rubber either by weight <br /> or volume . <br /> In order to meet specification requirements , keep the asphalt rubber uniformly blended <br /> while in storage . Equip storage tanks with a sampling device . <br /> 336-5 Testing of Asphalt Rubber Binder : <br /> 336-5 . 1 Quality Control Requirements : Test the asphalt rubber binder for the viscosity <br /> ,y <br /> requirement of Table 336- 1 at the following frequencies and situations : <br /> 1 . One per batch (for batch blending) or two per day (for continuous blending) <br /> during blending at the project site or asphalt plant, or the supplier' s terminal . <br /> 2 . Each load delivered to the project site/asphalt plant when blended at the <br /> supplier ' s terminal . <br /> 3 . Beginning of each day from the storage tank when storing the asphalt rubber <br /> binder at the project site or asphalt plant, or the supplier ' s terminal , obtain the sample for testing <br /> from the discharge piping exiting the storage tank. <br /> Obtain the viscosity testing equipment specified in FM 5 - 548 and make it <br /> available to the Engineer for verification purposes at the project site/asphalt plant and supplier ' s <br /> terminal . <br /> 336-5 . 1 . 1 Action at Project Site or Asphalt Plant : If the asphalt rubber binder <br /> does not meet the minimum viscosity requirement at the project site or asphalt plant, stop use of <br /> the asphalt rubber binder in the Asphalt Concrete Friction Course and Asphalt Rubber <br /> Membrane Interlayer, notify the Engineer, and make the appropriate adjustments as necessary to <br /> meet the requirements of Table 336- 1 in order to : ( 1 ) correct the viscosity of the blended material <br /> and (2) correct the blending operation . In the event that the corrective actions taken fail to correct <br /> the problem, or the material consistently fails to meet the minimum viscosity requirement, do not <br /> - 99 - <br /> FPID ( S ) : 423186 - 1 - 58 - 01 <br /> 6 <br />