2011-226B.1 - Laserfiche WebLink

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330- 10 . 1 . 2 Rolling Procedures : Utilize procedures that will uniformly compact the pavement layer to the desired density level . Roll across the mat, overlapping the adjacent pass by at least 6 inches . Roll slowly enough to avoid displacement of the mixture , and correct any displacement at once by the use of rakes and the addition of fresh mixture if required . Continue final rolling to eliminate all roller marks . 330- 10 . 1 .3 Compaction of Areas Inaccessible to Rollers : Use hand tamps or other satisfactory means to compact areas which are inaccessible to a roller, such as areas adjacent to curbs , gutters , bridges , manholes , etc . 33040 . 1 .4 Rolling Patching and Leveling Courses : Use pneumatic-tired rollers to roll all patching and leveling courses . When placing the initial leveling course over broken concrete pavement, use a pneumatic-tired roller that weighs at least 15 tons . 33040 . 1 . 5 Correcting Defects : Do not allow the rollers to deposit gasoline , oil , or grease onto the pavement. Remove and replace any areas damaged by such deposits as directed by the Engineer. While rolling is in progress , test the surface continuously, and correct all discrepancies to comply with the surface requirements . Remove and replace all drippings , fat or lean areas , and defective construction of any description . Remedy depressions that develop before completing the rolling by loosening the mixture and adding new mixture to bring the depressions to a true surface . Should any depression remain after obtaining the final compaction, remove the full depth of the mixture , and replace it with sufficient new mixture to form a true and even surface . Correct all high spots , high joints , and honeycombing as directed by the Engineer. Remove and replace any mixture remaining unbonded after rolling . Correct all defects prior to laying the subsequent course . 330- 10 . 1 .6 Use of Traffic Roller on First Overbuild Course : Use a pneumatic- tired roller on the first overbuild course . Compact the pavement with a minimum of five coverages . 330-10 . 1 .7 Use of Traffic Roller or Vibratory Roller on First Structural Layer Placed on an Asphalt Rubber Membrane Interlayer (ARMI) : Use a pneumatic -tired roller or a vibratory roller on the first structural layer placed on an ARMI . 33040 . 1 . 8 Compaction at Bridge Structures : Compact asphalt mixtures placed over bridge decks and approach slabs using static compaction only. Utilize the standard rolling procedure described in 330- 10 . 1 . 1 or an alternative procedure approved by the Engineer. 33041 Joints . 33041 . 1 Transverse Joints : Place the mixture as continuously as possible . Do not pass t the roller over the unprotected end of the freshly laid mixture except when discontinuing the laying operation long enough to permit the mixture to become chilled. When thus interrupting the laying operation, construct a transverse joint by cutting back on the previous run to expose the full depth of the mat. 33041 . 2 Longitudinal Joints : For all layers of pavement except the leveling course , place each layer so that longitudinal construction joints are offset 6 to 12 inches laterally between successive layers . Plan offsets in advance so that longitudinal joints of the friction course are not in wheel path areas . The longitudinal joints for friction course layers should be within 6 inches of the lane edge or at the center of the lane . The Engineer may waive this requirement where offsetting is not feasible due to the sequence of construction . - 75 - FPID ( S ) : 42318641 58 - 01 4 gx