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M <br />01 <br />I <br />N <br />I <br />e <br />ii <br />L <br />be reduced by 1/2 inch [13 mm], and the maximum allowable thickness may be increased <br />1/2 inch [1 3 mm], unless called for differently in the Contract documents. <br />334 -2 Materials. <br />334 -2.1 General Requirements: Meet the material requirements specified in <br />Division III. Specific references are as follows: <br />Superpave PG Asphalt Binder or Recycling Agent 916 -1 , 916 -2 <br />Coarse Aggregate ..................... ........................Section 901 <br />Fine Aggregate .................. ............................... Section 902 <br />334 -2.2 Superpave Asphalt Binder: Unless specified otherwise in the Contract, use <br />a PG 67 -22 asphalt binder with the following exceptions: for Traffic Level D, use a <br />PG 76 -22 asphalt binder in the final structural layer; for Traffic Level E, use a PG 76 -22 <br />asphalt binder in the top two structural layers. In addition, meet the requirements of <br />334 -2.3. <br />334 -2.3 Reclaimed Asphalt Pavement (RAP) Material: <br />334 -2.3.1 General requirements: RAP may be used as a component of the <br />asphalt mixture subject to the following requirements: <br />1. For Traffic Levels A, B and C mixtures, limit the amount of RAP <br />material used in the mix to a maximum of 50 percent by weight of total aggregate. For <br />Traffic Levels D and E mixtures, limit the amount of RAP material used in the mix to a <br />maximum of 30 percent by weight of total aggregate. <br />2. When using a PG 76 -22 Asphalt Binder, limit the amount of RAP <br />material used in the mix to a maximum of 15 percent by weight of total aggregate. <br />3. Assume full responsibility for the design, production and <br />construction of asphalt mixes which incorporate RAP as a component material. <br />4. Use RAP from an FDOT approved stockpile or RAP that has an <br />FDOT furnished Pavement Composition Data Sheet. <br />5. Do not use RAP material in any friction course mixes. <br />6. Provide stockpiled RAP material that is reasonably consistent in <br />characteristics and contains no aggregate particles which are soft or conglomerates of <br />fines. <br />7. Provide RAP material having a minimum average asphalt content of <br />4.0 percent by weight of total mix. The Engineer may sample the stockpile to verify that <br />this requirement is met. <br />334 -2.3.2 Material Characterization: Assume responsibility for establishing <br />the asphalt binder content, gradation, viscosity and bulk specific gravity (Gsb) of the RAP <br />material based on a representative sampling of the material. Obtain the samples by one of <br />the following methods: <br />1. Roadway cores: Cut a minimum number of cores to be <br />representative of the pavement prior to milling. Fill the core holes prior to opening to <br />traffic. Assume responsibility for accounting for the degradation that will occur during the <br />milling operation. <br />2. Milling: Obtain representative samples by milling the existing <br />pavement to the full depth shown on the plans for a minimum length of approximately <br />200 feet [60 m]. If required to maintain traffic, immediately replace the pavement removed <br />with the mix specified in the Contract. This mix will be paid for at the Contract unit price. <br />3. Stockpile sampling: Obtain samples from a stockpile of either <br />milled or processed RAP. Take representative samples at random locations around the <br />March 2007 01000 -54 03- 4122.D r� <br />�'xi l CJ <br />