Laserfiche WebLink
2026 Pavement Maintenance Overlay Special Provisions <br />PW# 3860 SP - 56 March 5, 2026 <br />1 4. Shall mix the HMA sufficiently to obtain a uniform temperature throughout the <br />2 mixture. <br />3 <br />4 5-04.3(3)E Rollers <br />5 Rollers shall be of the steel wheel, vibratory, oscillatory, or pneumatic tire type, in good <br />6 condition and capable of reversing without backlash. Operation of the roller shall be in <br />7 accordance with the manufacturers recommendations. When ordered by the Engineer for <br />8 any roller planned for use on the project, the Contractor shall provide a copy of the <br />9 manufacturers recommendation for the use of that roller for compaction of HMA. The <br />10 number and weight of rollers shall be sufficient to compact the mixture in compliance with <br />11 the requirements of Section 5-04.3(10). The use of equipment that results in crushing of <br />12 the aggregate will not be permitted. Rollers producing pickup, washboard, uneven <br />13 compaction of the surface, displacement of the mixture or other undesirable results shall <br />14 not be used. <br />15 <br />16 5-04.3(4) Preparation of Existing Paved Surfaces <br />17 When the surface of the existing pavement or old base is irregular, the Contractor shall <br />18 bring it to a uniform grade and cross-section as shown on the Plans or approved by the <br />19 Engineer. <br />20 <br />21 Preleveling of uneven or broken surfaces over which HMA is to be placed may be <br />22 accomplished by using an asphalt paver, a motor patrol grader, or by hand raking, as <br />23 approved by the Engineer. <br />24 <br />25 Compaction of preleveling HMA shall be to the satisfaction of the Engineer and may <br />26 require the use of small steel wheel rollers, plate compactors, or pneumatic rollers to <br />27 avoid bridging across preleveled areas by the compaction equipment. Equipment used for <br />28 the compaction of preleveling HMA shall be approved by the Engineer. <br />29 <br />30 Before construction of HMA on an existing paved surface, the entire surface of the <br />31 pavement shall be clean. All fatty asphalt patches, grease drippings, and other <br />32 objectionable matter shall be entirely removed from the existing pavement. All pavements <br />33 or bituminous surfaces shall be thoroughly cleaned of dust, soil, pavement grindings, and <br />34 other foreign matter. All holes and small depressions shall be filled with an appropriate <br />35 class of HMA. The surface of the patched area shall be leveled and compacted <br />36 thoroughly. Prior to the application of tack coat, or paving, the condition of the surface <br />37 shall be approved by the Engineer. <br />38 <br />39 A tack coat of asphalt shall be applied to all paved surfaces on which any course of HMA <br />40 is to be placed or abutted; except that tack coat may be omitted from clean, newly paved <br />41 surfaces at the discretion of the Engineer. Tack coat shall be uniformly applied to cover <br />42 the existing pavement with a thin film of residual asphalt free of streaks and bare spots at <br />43 a rate between 0.02 and 0.10 gallons per square yard of retained asphalt. The rate of <br />44 application shall be approved by the Engineer. A heavy application of tack coat shall be <br />45 applied to all joints. For Roadways open to traffic, the application of tack coat shall be <br />46 limited to surfaces that will be paved during the same working shift. The spreading <br />47 equipment shall be equipped with a thermometer to indicate the temperature of the tack <br />48 coat material. <br />49