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<br />02741 - 1/2 <br />SECTION 02741 PRIME AND TACK COATS <br />PART 1 - GENERAL <br />1.01 SCOPE OF WORK <br />The work specified in this Section consists of the application of bituminous material on <br />previously prepared base in accordance with these specifications and in conformity with <br />the line, grades, dimensions and notes shown on the Drawings. <br />PART 2 - PRODUCTS <br />2.01 MATERIALS <br />A. Liquid Asphalt for Prime Coat shall be Asphalt Emulsion Prime (AEP) meeting the <br />requirements of D.O.T. Specifications Section 916-4 and Section 300. <br />B. Liquid Asphalt for Tack Coat shall be Asphalt Emulsion Prime (AEP), conforming to <br />the requirements of D.O.T. Specification Section 916-4 and Section 300. <br />2.02 EQUIPMENT <br />A. The pressure distributor used for placing the tack or prime coat shall be equipped <br />with pneumatic tires having sufficient width of rubber in contact with the road surface <br />to avoid breaking the bond of or forming a rut in the surface. The distance between <br />the centers of openings of the outside nozzles of the spray bar shall be equal to the <br />width of the application required, within an allowable variation of 2-inches. The <br />outside nozzle at each end of the spray bar shall have an area of opening of not less <br />than 25 percent, nor more than 75 percent in excess of the other nozzles which shall <br />have uniform openings. When the application covers less than the full width, the <br />normal opening of the end nozzle at the junction line may remain the same as those <br />of the interior nozzle. <br />B. Application of prime or tack coat shall be done with a distributor approved by the <br />Engineer of Record. <br />PART 3 - EXECUTION <br />3.01 PREPARATION <br />A. Before applying any bituminous material, all loose material, dust, dirt, and foreign <br />material, which might prevent proper bond with the existing surface, shall be <br />removed. Particular care shall be taken to clean the outer edges of the strip to be <br />treated in order to insure that the prime or tack coat will adhere. <br />B. When the prime or tack coat is applied adjacent to curb and gutter, or any other <br />concrete surface (except where they are to be covered with a bituminous wearing <br />course) such concrete surfaces shall be protected by heavy paper or other protective <br />material while the prime or tack coat is being applied. Any bituminous material <br />deposited on such concrete surfaces shall be removed immediately. <br />3.02 WEATHER LIMITATIONS <br />No bituminous material shall be applied when the air temperature is less than 50 ºF in the <br />shade, or when the weather conditions or the condition of the existing surface is <br />unsuitable. In no case shall bituminous material be applied while rain is falling or when <br />there is water on the surface to be covered.