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334-3.2.2.1 Mixture Gradation Classification: Plot the combined <br />mixture gradation on an FHWA 0.45 Power Gradation Chart. Include the Control Points from <br />AASHTO M323-12, Table -3, as well as the Primary Control Sieve (PCS) Control Point from <br />AASHTO M323-12, Table 4. Fine mixes are defined as having a gradation that passes above or <br />through the primary control sieve control point. <br />334-3.2.3 Gyratory Compaction: Compact the design mixture in accordance <br />with AASHTO T312-12, with the following exceptions: use the number of gyrations at Ndesign as <br />designed in Table 334-3. <br />Gyratory <br />Table 334-3 <br />Com action Requirements <br />Traffic Level <br />Ndesign Number of Gyrations <br />A <br />50 <br />B <br />65 <br />C <br />75 <br />334-3.2.4 Design Criteria: Meet the requirements for nominal maximum <br />aggregate size as defined in AASHTO M323-12, as well as for relative density, VMA, VIA, and <br />dust -to -binder ratio as specified in AASHTO M323-12, Table 6. Ninitiat and Nmaximum <br />requirements are not applicable. <br />334-3.2.5 Moisture Susceptibility: Test 4 inch specimens in accordance with <br />FDOT Test Method FM 1-T 283. Provide a mixture having a retained tensile strength ratio of at <br />least 0.80 and a minimum tensile strength (unconditioned) of 100 pounds per square inch. If <br />necessary, add a liquid anti -stripping agent from the FDOT's APL or hydrated lime in order to <br />meet these criteria. <br />In lieu of moisture susceptibility testing, add a liquid anti -stripping agent <br />from the FDOT's APL. Add 0.5% liquid anti -stripping agent by weight of asphalt binder. <br />334-3.2.6 Additional Information: In addition to the requirements listed above, <br />provide the following information on each mix design: <br />1. The design traffic level and the design number of gyrations (Ndesign). <br />2. The source and description of the materials to be used. <br />3. The FDOT source number and the FDOT product code of the aggregate <br />components furnished from an FDOT approved source (if required). <br />4. The gradation and proportions of the raw materials as intended to be <br />combined in the paving mixture. The gradation of the component materials shall be <br />representative of the material at the time of use. Compensate for any change in aggregate <br />gradation caused by handling and processing as necessary. <br />5. A single percentage of the combined mineral aggregate passing each <br />specified sieve. Degradation of the aggregate due to processing (particularly material passing the <br />No. 200 sieve) should be accounted for and identified. <br />6. The bulk specific gravity (Gsb) value for each individual aggregate and <br />RAP component. <br />7. A single percentage of asphalt binder by weight of total mix intended to <br />be incorporated in the completed mixture, shown to the nearest 0.1 %. <br />8. A target temperature for the mixture at the plant (mixing temperature) <br />and a target temperature for the mixture at the roadway (compaction temperature). Do not exceed <br />a target temperature of 330°F for PG 76-22 (PMA) and PG 76-22 (ARB) asphalt binders, and <br />315°F for unmodified asphalt binders. <br />01025-30 Technical Specifications <br />F:\Public Works\ENGINEERING DIVISION PROJECTS\1503-43rd Ave Swk_Airport Dr to 41st St\1-Admin\Bids\Bid <br />Documents\Master Contract Documents\Technical Specifications.doc <br />