Laserfiche WebLink
L <br /> C . Tack Coat shall be applied on all prepared bases and existing pavement immediately prior <br /> to surfacing. Tack coat material shall be Asphalt Grade RA-500 or Emulsified Asphalt <br /> Grades Rs- 1 or RS-2, conforming to the Florida D . O .T. Standard Specifications for Road <br /> and Bridge Construction, 2006 Edition, Section 916-2. <br /> 2 . 02 SUPERPAVE ASPHALT CONCRETE <br /> A. Asphalt used for structural, leveling or patching courses shall be Type SP- 12 . 5, <br /> conforming to the Florida D.O.T . Standard Specifications for Road and Bridge <br /> Construction, 2006 Edition, Section 334. Asphalt gradation shall be fine or course <br /> depending on planned thickness. <br /> B . Asphalt used for final surface course shall be Type SP-9 . 5 , conforming to the Florida <br /> D.O.T. Standard Specifications for Road and Bridge Construction, 2006 Edition, Section <br /> 334. Asphalt gradation shall be fine or course depending on planned thickness. <br /> PART 3 - EXECUTION OF WORK <br /> 3 . 01 CLEANING SURFACES <br /> Prior to the laying of any surface courses, the surface of the pavement or base to be covered shall <br /> be cleaned of all loose and deleterious material by the use of power brooming or hand brooming <br /> where necessary. All such material shall be collected and disposed of by the Contractor. <br /> 3 . 02 APPLICATION OF PRIME AND TACK COATS <br /> A. Prime Coat material shall be heated to a suitable temperature and applied to the base in a <br /> thin, uniform layer at a rate of between 0. 1 and 0. 15 gallons per square yard, as determined <br /> by the Engineer. The prime coat shall be applied using a pressure distributor. Uniformly <br /> cover the primed surface with a light application of cover material. Roll the covered prime <br /> coat with a traffic roller to provide a dense mat. <br /> B . Where primed base courses have become dirty or lost their bonding effect and on all <br /> underlying asphalt courses, a tack coat shall be required. Tack coat material shall be heated <br /> to a suitable temperature and applied in a thin, uniform layer at a rate of between 0 .02 and <br /> 0.08 gallons per square yard. The tack coat shall be applied sufficiently in advance of the <br /> surface course installation to permit drying but not so far in advance as to lose its <br /> adhesiveness as a result of being covered with dust. The tack coat shall be kept free from <br /> traffic until the surface course has been laid. <br /> 3 . 03 PREPARATION OF ASPHALT CONCRETE <br /> The batching of aggregates, fillers and asphalt binder as well as the mixing and heating of the <br /> mixture shall conform to the Florida D.O.T. Standard Specifications for Road and Bridge <br /> Construction, 2006 Edition, Section 330. The "Master Temperature Range" for all mix designs <br /> shall be the accepted mix design temperature t 30 degrees Fahrenheit ff). Any load or portion <br /> of a load measured by the Engineer' s Representative which is outside the "Master Temperature <br /> Range" shall be rejected prior to installation. <br /> 3 .04 TRANSPORTATION OF ASPHALT CONCRETE <br /> 02741 - Asphaltic Concrete Surface Course <br /> 027414 <br />