(A) The work consists of the application of a bituminous prime coat on previously prepared bases in accordance with these specifications.
(B) The surface to be primed shall be cleaned of all loose material, dust, dirt, caked clay and other foreign material which might prevent proper bonding and the moisture content of the base shall not exceed 90% of the optimum moisture. The temperature of the prime material shall be between 100° and 150° F. The actual temperature shall be that which will insure uniform distribution. The material shall be applied by means of a pressure distributor. The amount to be applied will be dependent on the character of the surface and shall be sufficient to coat the surface thoroughly and uniformly, with no excess.
(C) For limerock, limerock stabilized, and local rock bases: For these bases, the rate of application shall be no less than 0.10 gallon per square yard. Sand-clay, shell, and shell stabilized bases: The rate of application for these bases shall be no less than 0.15 gallon per square yard.
(D) If required, the base shall be lightly sprinkled with water and rolled with a traffic roller, in advance of the application of the prime.
(E) If warranted by traffic conditions, the application may be made on only one-half the width of the bases at one time, in which case positive means shall be used to secure the correct amount of bituminous material at the joint.
(F) If emulsified asphalt is used for prime coat, the primed base shall be uniformly covered by an application of sand-bituminous hot mix or screenings, at an appropriate rate of ten pounds per square yard. For the sand, meet the requirements as specified in FDOT Standard Specifications Section 902-2 or 902-6, and for the screenings, meet the requirements as specified in Section 902-5. The entire surface of the sand-bituminous hot mix or screenings cover material shall be rolled with a traffic roller as required to produce a reasonable dense mat. If material other than emulsified asphalt is used for prime coat, the primed base shall be covered by a light uniform application of cover material. If considered necessary for proper distribution of spread, the cover material shall be rolled with a traffic roller, for at least ten passes over the entire area.
(G) Do not apply prime and tack coats when the air temperature in the shade and away from artificial heat is less than 40° F. at the location where the application is to be made or when weather conditions or the surface conditions are otherwise unfavorable.
(Ord. 2010-05, passed 4-27-2010) Penalty, see § 10.99