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<br />Fulton Street Pedestrian Bicycle Corridor PAGE 82 OF 114 CONTRACT <br />FEDERAL AID # TAP-0420(026) <br />WO #3785 September 6, 2024 <br /> <br /> 1 <br />Joint sealant shall be used for transverse joints in paving. 2 <br /> 3 <br />Cleaning: Ensure that cracks are thoroughly clean, dry and free of all loose and foreign 4 <br />material when filling with crack sealant material. Use a hot compressed air lance to dry 5 <br />and warm the pavement surfaces within the crack immediately prior to filling a crack with 6 <br />the sealant material. Do not overheat pavement. Do not use direct flame dryers. Routing 7 <br />cracks is not required. 8 <br /> 9 <br />Sand Slurry: For cracks that are to be filled with sand slurry, thoroughly mix the 10 <br />components and pour the mixture into the cracks until full. Add additional CSS -1 cationic 11 <br />emulsified asphalt to the sand slurry as needed for workability to ensure the mixture will 12 <br />completely fill the cracks. Strike off the sand slurry flush with the existing pavement 13 <br />surface and allow the mixture to cure. Top off cracks that were not completely filled with 14 <br />additional sand slurry. Do not place the HMA overlay until the slurry has fully cured. 15 <br /> 16 <br />The sand slurry shall consist of approximately 20 percent CSS -1 emulsified asphalt, 17 <br />approximately 2 percent portland cement, water (if required), and the remainder clean 18 <br />Class 1 or 2 fine aggregate per section 9 -03.1(2). The components shall be thoroughly 19 <br />mixed and then poured into the cracks and joints until full. The following day, any cracks 20 <br />or joints that are not completely filled shall be topped off with additional sand slurry. After 21 <br />the sand slurry is placed, the filler shall be struck off flush with the existing pavement 22 <br />surface and allowed to cure. The HMA overlay shall not be placed until the slurry has 23 <br />fully cured. The requirements of Section 1 -06 will not apply to the portland cement and 24 <br />sand used in the sand slurry. 25 <br /> 26 <br />In areas where HMA will be placed, use sand slurry to fill the cracks. 27 <br /> 28 <br />In areas where HMA will not be placed, fill the cracks as follows: 29 <br /> 30 <br />1. Cracks ¼ inch to 1 inch in width - fill with hot poured sealant. 31 <br />2. Cracks greater than 1 inch in width – fill with sand slurry. 32 <br /> 33 <br />Hot Poured Sealant: For cracks that are to be filled with hot poured sealant, apply the 34 <br />material in accordance with these requirements and the manufacturer’s 35 <br />recommendations. Furnish a Type 1 Working Drawing of the manufacturer’s product 36 <br />information and recommendations to the Engineer prior to the start of work, including the 37 <br />manufacturer’s recommended heating time and temperatures, allowable storage time 38 <br />and temperatures after initial heating, allowable reheating criteria, and application 39 <br />temperature range. Confine hot poured sealant material within the crack. Clean any 40 <br />overflow of sealant from the pavement surface. If, in the opinion of the Engineer, the 41 <br />Contractor’s method of sealing the cracks with hot poured sealant results in an excessive 42 <br />amount of material on the pavement surface, stop and correct the operation to eliminate 43 <br />the excess material. 44 <br /> 45 <br />5-04.3(4)A2 Crack Sealing Areas Prior to Paving 46 <br />In areas where HMA will be placed, use sand slurry to fill the cracks. 47