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Specification No . : RGS0024-87 <br /> PART II - SPECIFIC CONDITIONS <br /> Section 13 -- Asphalt Concrete <br /> Paving <br /> material to penetrate and seal , but not flood the surface . <br /> Cure and dry as long as necessary to attain <br /> penetrationand evaporation of volatiles . <br /> 13 . 8 . 3 Tack Coat : Apply to contact surfaces of previously <br /> constructed asphalt or Portland cement concrete and <br /> surfaces abutting or projecting into asphalt concrete <br /> pavement . Distribute at a rate of 0 . 05 to 0 . 15 gallons <br /> per square yard of surface . Allow to dry until proper <br /> condition to receive paving . <br /> 13 . 9 Mix Placement : <br /> 13 . 9 . 1 General : Place asphalt concrete mixture on prepared <br /> surface , spread and strike -off . Spread mixture at <br /> minimum temperature of 2250F . Place inaccessible and <br /> small areas by hand . Place each course to required <br /> grade , cross-section, and compacted thickness . <br /> 13 . 9 . 2 Paver Placing : Place in strips not less than 10 feet <br /> wide , unless otherwise acceptable to the engineer . After <br /> first strip has been placed and rolled , place succeeding <br /> strips and extend rolling to overlap previous strips . <br /> Complete base course for a section before placing surface <br /> course . <br /> 13 . 9 . 3 Joints : Make joints between old and new pavements , or <br /> between successive days ' work, to ensure continuous bond <br /> between adjoining work . Construct joints to have same <br /> texture , density and smoothness as other sections of <br /> asphalt concrete course . Clean concrete surfaces and <br /> apply tack coat . <br /> 13 . 10 Rolling : <br /> 13 . 10 . 1 General : Begin rolling when mixture will bear roller <br /> weight without excessive displacement . <br /> 13 . 10 . 2 Compact mixture with hot hand tampers or vibrating plate <br /> compactors in areas inaccessible to rollers . <br /> 13 . 10 . 3 Breakdown Rolling : Accomplish breakdown or initial <br /> rolling immediately following rolling of joints and <br /> outside edge . Check surface after breakdown rolling , and <br /> XIII-3 <br />