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6-39.01 General Asphalt concrete shall be Type B and shall <br />conform to these Special Provisions and the following sections of <br />the Standard Specifications: <br />39-1 General <br />39-2 Materials <br />39-3 Storing, Proportioning and <br />Mixing Materials <br />39-4.01 Subgrade <br />39-4.02 Prime Coat and Paint Binder <br />All bituminous binder shall be viscosity grade AR -4000 liquid <br />asphalt except AR -8000 liquid asphabt shall be used when the <br />ambient temperature is over 90 to 95 F. Asphalt shall conform <br />to those applicable parts of Section 92 "Asphalt" of the Standard <br />Specifications. <br />The mineral aggregate shall be 3/4 -inch maximum size for base <br />courses when such work constitutes 100 or more tons, and shall be <br />as specified on the plans for the finish course. <br />Medium gradations shall be used. For base course work less than <br />100 tons, the aggregate size may be the same as the finish <br />course. Asphalt concrete work required at manholes, water valves, <br />feathering, and other miscellaneous facilities shall be 3/8 -inch <br />maximum size. <br />Asphalt concrete shall not be placed until the subgrade has been <br />approved by the Engineer. Unstable subgrade shall not be paved. <br />A prime coat is not required. <br />SS -1 asphaltic emulsion shall be applied to existing pavements, <br />lower courses of new pavements (unless upper course is being <br />applied in the same day and the lower course is clean), and <br />vertical edges of new or existing pavements, prior to paving. If <br />recommended by the manufacturer, the emulsion may be diluted up to <br />1:1. Immediately before applying the emulsion, the surface shall <br />be cleaned of all dirt and loose material. Asphaltic emulsion and <br />application shall conform to the applicable parts of Sections 94 <br />"Asphaltic Emulsions" and 39-4.02 "Prime Coat and Paint Binder" of <br />the Standard Specifications. <br />6-39.02 (deleted <br />6-39.03 (deleted <br />6-39.04 Trench Replacement and Shoulder Paving Trench <br />replacement and shoulder paving consists of spreading and <br />compacting asphalt concrete in the following locations: <br />a) trenches <br />b) shoulders less than 8 feet wide adjacent to concrete curb and <br />gutter <br />c) asphalt sidewalks and ramps <br />TANK6/TXTW.02M <br />