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CITY OF EVERETT WEST MARINE VIEW DRIVE/ALVERSON AND 41 ST ST/GRAND AVE <br />PEDESTRIAN IMPROVEMENTS <br />STATE FUND# HLP-PB15(032) <br />WO #3630 July 25, 2024 <br />66 <br />1 After the required amount of mineral materials, asphalt binder, recycling agent and anti- <br />2 stripping additives have been introduced into the mixer the HMA shall be mixed until <br />3 complete and uniform coating of the particles and thorough distribution of the asphalt <br />4 binder throughout the mineral materials is ensured. <br />5 <br />6 When discharged, the temperature of the HMA shall not exceed the optimum mixing <br />7 temperature by more than 25F as shown on the reference mix design report or as <br />8 approved by the Engineer. Also, when a WMA additive is included in the manufacture of <br />9 HMA, the discharge temperature of the HMA shall not exceed the maximum <br />10 recommended by the manufacturer of the WMA additive. A maximum water content of 2 <br />11 percent in the mix, at discharge, will be allowed providing the water causes no problems <br />12 with handling, stripping, or flushing. If the water in the HMA causes any of these <br />13 problems, the moisture content shall be reduced as directed by the Engineer. <br />14 <br />15 Storing or holding of the HMA in approved storage facilities will be permitted with approval <br />16 of the Engineer, but in no event shall the HMA be held for more than 24 hours. HMA held <br />17 for more than 24 hours after mixing shall be rejected. Rejected HMA shall be disposed of <br />18 by the Contractor at no expense to the Contracting Agency. The storage facility shall have <br />19 an accessible device located at the top of the cone or about the third point. The device <br />20 shall indicate the amount of material in storage. No HMA shall be accepted from the <br />21 storage facility when the HMA in storage is below the top of the cone of the storage <br />22 facility, except as the storage facility is being emptied at the end of the 01*243>X5.4,+) <br />23 <br />24 Recycled asphalt pavement (RAP) utilized in the production of HMA shall be sized prior to <br />25 entering the mixer so that a uniform and thoroughly mixed HMA is produced. If there is <br />26 evidence of the recycled asphalt pavement not breaking down during the heating and <br />27 mixing of the HMA, the Contractor shall immediately suspend the use of the RAP until <br />28 changes have been approved by the Engineer. After the required amount of mineral <br />29 materials, RAP, new asphalt binder and asphalt rejuvenator have been introduced into the <br />30 mixer the HMA shall be mixed until complete and uniform coating of the particles and <br />31 thorough distribution of the asphalt binder throughout the mineral materials, and RAP is <br />32 ensured. <br />33 <br />34 5-04.3(7) Spreading and Finishing <br />35 The mixture shall be laid upon an approved surface, spread, and struck off to the grade <br />36 and elevation established. HMA pavers complying with Section 5-04.3(3) shall be used to <br />37 distribute the mixture. Unless otherwise directed by the Engineer, the nominal compacted <br />38 depth of any layer of any course shall not exceed the following: <br />39 <br />40 HMA Class 1 0.35 feet <br />41 HMA Class and HMA Class ‰ <br />42 ^^^^^^wearing course 0.30 feet <br />43 ^^^^^^other courses 0.35 feet <br />44 HMA Class _A 0.15 feet <br />45