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<br />TSCIDDA OW ASSO HILLS PLAT 4 <br /> <br />4.5 Plant-Mixed Bituminous Surface (2331) <br /> <br />The final surface shall not be constructed until at least one construction season after <br />base construction is completed. <br /> <br />The plant-mixed bituminous surface shall be constructed 10 accordance with the <br />Provisions of2331, except as modified as follows: <br /> <br />The Contractor shall submit a job mix design utilizing his planned aggregate source. <br />The job mix design shall accomplished by an independent laboratory approved by the <br />Engineer. <br /> <br />The following shall apply to the job mix design: <br /> <br />Trial Mix Tests <br /> <br />Trial Properties <br />~ Non-Wear <br />Min. Max, Min. Max. <br /> <br />Marshall Stability <br />(50 blows-pounds) <br /> <br />500 <br /> <br />3,000 500 <br /> <br />3,000 <br /> <br />* Air Voids in Mix(%) <br /> <br />3 <br /> <br />6 3 <br /> <br />8 <br /> <br />*Cold Water Abrasion <br />Loss (%) <br /> <br />10 <br /> <br />15 <br /> <br />*(Test procedures as defined by the Department of Transportation Materials Engineering <br />Laboratory in St. Paul.) <br /> <br />Asphalt cement content, as determined by the trial mix test procedures and above <br />criteria, shall not exceed 6.5 percent nor be less than 5.8 percent by total weight of <br />mixture for the wearing course. <br /> <br />The Contractor shall take special measures to prevent damage to edges of concrete <br />curb and gutters during paving and rolling operations. Damage to such will result in <br />the removal and replacement of such damaged facilities without compensation. <br /> <br />Bituminous material for mixture shall be AC-1, 85-100 penetration. <br /> <br />-4- <br />