AASHTO TP 62:07(2009) Standard Method of Test for Determining Dynamic Modulus of Hot Mix Asphalt (HMA).
6.2.3. Loading Platens—Loading platens, sized 104.5 ± 0.5 mm. are required above and below the specimen to transfer the load from the testing machine to the specimen. Generally, these platens should be made of hardened or plated steel, or anodized high-strength aluminum. Softer materials will require more frequent replacement. Materials that have linear elastic modulus properties and hardness properties lower than that of 606 l-T6 aluminum shall not be used.
6.2.4. End Treatment—Friction-reducing end treatments shall be placed between the specimen ends and the loading platens. The end treatments shall consist of two TeflonR sheets or two 0.5-mm (0.02-in.) thick latex membranes separated with silicone grease.
6.3. Superpave Gvratorv Compactor—A gyratory compactor and associated equipment for preparing laboratory specimens in accordance with T 312. The compactor shall be capable of compacting 170-mm (6.7-in.) high specimen.
6.4. Saw—A machine for sawing test specimen ends to the appropriate length is required. The saw shall have a diamond cutting edge and shall be capable of cutting specimens to the prescribed dimensions without excessive heating or shock,
Note 1—A diamond masonry saw greatly facilitates the preparation of test specimens with smooth, parallel ends. Both single- or double-bladed diamond saws should have feed mechanisms and speed controls of sufficient precision to ensure compliance with Sections 9.5 and 9.6 of this method. Adequate blade stiffness is also important to control flexing of the blade during thin cuts.
6.5. Core Drill—A coring machine with cooling system and a diamond bit for cutting nominal
101 .6-mm (4.00-in.) diameter test specimens.
Note 2 —A coring machine with adjustable vertical feed and rotational speed is recommended. The variable feeds and speeds may be controlled by various methods. A vertical feed rate of approximately 0.05 mm/rev (0.002 in./rev) and a rotational speed of approximately 450 RPM has been found to be satisfactory for several Superpave mixtures. Use of a standard electric core drill with a holder for the specimen is also acceptable.AASHTO TP 62 pdf download.