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2026 Pavement Maintenance Overlay Special Provisions <br />PW# 3860 SP - 58 March 5, 2026 <br />1 shall be removed from stockpile(s) in a manner to ensure minimal segregation when <br />2 being moved to the HMA plant for processing into the final mixture. Different aggregate <br />3 sizes shall be kept separated until they have been delivered to the HMA plant. <br />4 <br />5 5-04.3(5)A Vacant <br />6 <br />7 5-04.3(6) Mixing <br />8 After the required amount of mineral materials, asphalt binder, recycling agent and anti- <br />9 stripping additives have been introduced into the mixer the HMA shall be mixed until <br />10 complete and uniform coating of the particles and thorough distribution of the asphalt <br />11 binder throughout the mineral materials is ensured. <br />12 <br />13 When discharged, the temperature of the HMA shall not exceed the optimum mixing <br />14 temperature by more than 25F as shown on the reference mix design report or as <br />15 approved by the Engineer. Also, when a WMA additive is included in the manufacture of <br />16 HMA, the discharge temperature of the HMA shall not exceed the maximum <br />17 recommended by the manufacturer of the WMA additive. A maximum water content of 2 <br />18 percent in the mix, at discharge, will be allowed providing the water causes no problems <br />19 with handling, stripping, or flushing. If the water in the HMA causes any of these <br />20 problems, the moisture content shall be reduced as directed by the Engineer. <br />21 <br />22 Storing or holding of the HMA in approved storage facilities will be permitted with approval <br />23 of the Engineer, but in no event shall the HMA be held for more than 24 hours. HMA held <br />24 for more than 24 hours after mixing shall be rejected. Rejected HMA shall be disposed of <br />25 by the Contractor at no expense to the Contracting Agency. The storage facility shall have <br />26 an accessible device located at the top of the cone or about the third point. The device <br />27 shall indicate the amount of material in storage. No HMA shall be accepted from the <br />28 storage facility when the HMA in storage is below the top of the cone of the storage <br />29 facility, except as the storage facility is being emptied at the end of the working shift. <br />30 <br />31 Recycled asphalt pavement (RAP) utilized in the production of HMA shall be sized prior to <br />32 entering the mixer so that a uniform and thoroughly mixed HMA is produced. If there is <br />33 evidence of the recycled asphalt pavement not breaking down during the heating and <br />34 mixing of the HMA, the Contractor shall immediately suspend the use of the RAP until <br />35 changes have been approved by the Engineer. After the required amount of mineral <br />36 materials, RAP, new asphalt binder and asphalt rejuvenator have been introduced into the <br />37 mixer the HMA shall be mixed until complete and uniform coating of the particles and <br />38 thorough distribution of the asphalt binder throughout the mineral materials, and RAP is <br />39 ensured. <br />40 <br />41 5-04.3(7) Spreading and Finishing <br />42 The mixture shall be placed upon an approved surface, spread, and struck off to the <br />43 grade and elevation established. HMA pavers complying with Section 5-04.3(3) shall be <br />44 used to distribute the mixture. Unless otherwise directed by the Engineer, the nominal <br />45 compacted depth of any layer of any course shall not exceed the following: <br />46 <br />47 HMA Class 1 0.35 feet