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CITY OF EVERETT SPECIAL PROVISIONS <br /> <br />Beverly Lake Water Quality Retrofit Division 5 – SURFACE TREATMENTS August 2023 <br /> <br />AND PAVEMENTS <br />WO No. – UP3745 SP - 166 <br />to the start of work, including the manufacturer’s recommended heating time <br />and temperatures, allowable storage time and temperatures after initial <br />heating, allowable reheating criteria, and application temperature range. <br />Confine hot poured sealant material within the crack. Clean any overflow of <br />sealant from the pavement surface. If, in the opinion of the Engineer, the <br />Contractor’s method of sealing the cracks with hot poured sealant results in an <br />excessive amount of material on the pavement surface, stop and correct the <br />operation to eliminate the excess material. <br />5-04.3(4)A2 Crack Sealing Areas Prior to Paving <br />In areas where HMA will be placed, use sand slurry to fill the cracks. <br />5-04.3(4)A3 Crack Sealing Areas Not to be Paved <br />In areas where HMA will not be placed, fill the cracks as follows: <br />a. Cracks 1/4 inch to 1 inch in width - fill with hot poured sealant. <br />b. Cracks greater than 1 inch in width – fill with sand slurry. <br />5-04.3(4)B Vacant <br />5-04.3(4)C Vacant <br /> <br />5-04.3(6) Mixing <br />After the required amount of mineral materials, asphalt binder, recycling agent and <br />anti-stripping additives have been introduced into the mixer, mix the HMA until <br />complete and uniform coating of the particles and thorough distribution of the <br />asphalt binder throughout the mineral materials is ensured. <br />Ensure the temperature of the HMA when discharged does not exceed the optimum <br />mixing temperature by more than 25°F as shown on the reference mix design report <br />or as approved by the Engineer. Also, when a WMA additive is included in the <br />manufacture of HMA, ensure the discharge temperature of the HMA does not <br />exceed the maximum recommended by the manufacturer of the WMA additive. A <br />maximum water content of 2 percent in the mix, at discharge, will be allowed <br />providing the water causes no problems with handling, stripping, or flushing. If the <br />water in the HMA causes any of these problems, reduce the moisture content in <br />accordance with Engineer’s directions. <br />Storing or holding of the HMA in approved storage facilities for less than 24 hours <br />will be permitted with Engineer’s approval. Engineer will reject HMA held for more <br />than 24 hours after mixing. Dispose of rejected HMA at no expense to the City. <br />Provide the storage facility having an accessible device, indicating the amount of <br />material in storage, located at the top of the cone or about the third point. Engineer <br />will NOT accept HMA from the storage facility when the HMA in storage is below <br />the top of the cone of the storage facility; except, as the storage facility is being <br />emptied at the end of the working shift. <br />Size recycled asphalt pavement (RAP) utilized in the production of HMA prior to <br />entering the mixer to produce a uniform and thoroughly mixed HMA. If there is <br />evidence of the recycled asphalt pavement not breaking down during the heating <br />and mixing of the HMA, immediately suspend the use of the RAP until Engineer <br />approves changes necessary to provide adequate RAP breakdown and mixing. <br />After introducing the required amount of mineral materials, RAP, new asphalt binder <br />and asphalt rejuvenator into the mixer, mix the HMA until complete and uniform <br />coating of the particles and thorough distribution of the asphalt binder throughout <br />the mineral materials, and RAP is ensured.