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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 />64 <br />1 When the Proposal includes a pay item for crack sealing, seal all cracks … inch in width <br />2 and greater. <br />3 <br />4 Joint sealant shall be used for transverse joints in paving. <br />5 <br />6 Cleaning: Ensure that cracks are thoroughly clean, dry and free of all loose and foreign <br />7 material when filling with crack sealant material. Use a hot compressed air lance to dry <br />8 and warm the pavement surfaces within the crack immediately prior to filling a crack with <br />9 the sealant material. Do not overheat pavement. Do not use direct flame dryers. Routing <br />10 cracks is not required. <br />11 <br />12 Sand Slurry: For cracks that are to be filled with sand slurry, thoroughly mix the <br />13 components and pour the mixture into the cracks until full. Add additional CSS-1 cationic <br />14 emulsified asphalt to the sand slurry as needed for workability to ensure the mixture will <br />15 completely fill the cracks. Strike off the sand slurry flush with the existing pavement <br />16 surface and allow the mixture to cure. Top off cracks that were not completely filled with <br />17 additional sand slurry. Do not place the HMA overlay until the slurry has fully cured. <br />18 <br />19 The sand slurry shall consist of approximately 20 percent CSS-1 emulsified asphalt, <br />20 approximately 2 percent portland cement, water (if required), and the remainder clean <br />21 Class 1 or 2 fine aggregate per section 9-03.1(2). The components shall be thoroughly <br />22 mixed and then poured into the cracks and joints until full. The following day, any cracks <br />23 or joints that are not completely filled shall be topped off with additional sand slurry. After <br />24 the sand slurry is placed, the filler shall be struck off flush with the existing pavement <br />25 surface and allowed to cure. The HMA overlay shall not be placed until the slurry has fully <br />26 cured. The requirements of Section 1-06 will not apply to the portland cement and sand <br />27 used in the sand slurry. <br />28 <br />29 In areas where HMA will be placed, use sand slurry to fill the cracks. <br />30 <br />31 In areas where HMA will not be placed, fill the cracks as follows: <br />32 <br />33 1. Cracks … inch to 1 inch in width - fill with hot poured sealant. <br />34 2. Cracks greater than 1 inch in width fill with sand slurry. <br />35 <br />36 Hot Poured Sealant: For cracks that are to be filled with hot poured sealant, apply the <br />37 material in accordance with these requirements and the manufacturers <br />38 recommendations. Furnish a Type 1 Working Drawing of the manufacturers product <br />39 information and recommendations to the Engineer prior to the start of work, including the <br />40 manufacturers recommended heating time and temperatures, allowable storage time and <br />41 temperatures after initial heating, allowable reheating criteria, and application temperature <br />42 range. Confine hot poured sealant material within the crack. Clean any overflow of sealant <br />43 from the pavement surface. If, in the opinion of the Engineer, the Contractors method of <br />44 sealing the cracks with hot poured sealant results in an excessive amount of material on <br />45 the pavement surface, stop and correct the operation to eliminate the excess material. <br />46 <br />47 5-04.3(4)A2 Crack Sealing Areas Prior to Paving