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B. Additions: <br />1.Equipment: <br />a.Pavement Restoration Vehicle (PRV): PRV shall be a truck mounted, self-contained pavement <br />maintenance heating system equipped with a fuel system and a heated chamber capable of <br />maintaining the fresh asphalt at a temperature of 300 degrees or higher. <br />b. The adjustable height infrared heating unit may be a truck mounted (preferred) or trailer <br />mounted to the PRV. The unit shall be equipped with a chamber or chambers capable of heating <br />the existing bituminous pavement to a workable condition without oxidation or burning. There <br />shall be no flame in direct contact with the existing bituminous surface. <br />c. Compaction shall be achieved with a self-propelled steel drum vibratory roller of sufficient size <br />to provide complete compaction to the full heated depth of the patched area (3000 psi to a depth <br />of 10 inches). <br />d. Contractor shall not place old, removed material into the container on the PRV holding new <br />bituminous material, or into any other container holding new bituminous material. <br />2. Materials: <br />a. New bituminous material for patching shall be HMA Surface No. 11, PG 64-22, with no recycled <br />shingles (RS) materials and incorporating only limestone aggregate, or equal as approved by the <br />Engineer. <br />b. New material shall be added to all patched areas. <br />c. Rejuvenating agent shall be an asphaltene/maltene restorative agent such as Reclamite <br />Asphalt Rejuvenating Agent or equal as approved by the Engineer. <br />3. Construction: <br />a. Area shall be swept clean prior to setting infrared heating unit. <br />b. Work shall only be performed when the ambient and surface temperatures are 45°F or above. <br />c. The infrared heating unit shall be lowered to within six to nine inches of the existing pavement. <br />The heated area must extend at least six inches outside of the area of repair. Apply heat to <br />the area continuously until the surface is heated to a depth of approximately two inches. When <br />the existing bituminous surface can be worked with a rake, proper heat penetration has been <br />achieved. <br />d. Under windy conditions, metal shields will be placed on three sides to block the wind and <br />provide for an even heated surface. <br />e. Etch an outline of the repair area with the back of a rake at least three inches beyond the edges <br />of the repair area. Scarify the existing bituminous surface within the repair area to the full <br />heated depth. Ensure that a vertical surface around the edge of the repair area is achieved by <br />rake. <br />f. Remove existing bituminous material (as required by adjacent grades) to allow for the <br />placement of new bituminous mix within the area of the patch. Rejuvenating agent shall be <br />applied at a rate of 0.10 to 0.20 gal / syd prior to placement of new bituminous material. <br />g. Reshape patched area by hand with rake and lute to match grade of existing adjacent <br />pavement. After reshaping, reapply rejuvenating agent at a rate of 0.10 to 0.20 gal / syd. <br />h. Outside perimeter shall be compacted as soon as possible to ensure thermal bonding. <br />Compact new paving with the specified roller to the full depth of the heated patch. Compacted <br />surface shall be smooth in texture and shall have positive drainage matching the slope of the <br />existing adjacent pavement. <br />i. Any potholes within the patched area shall be cleaned, sides dressed to vertical, overfilled with <br />new bituminous material, and compacted to match existing surface prior to application of <br />infrared heat. <br />4. Method of Measurement & Basis of Payment: <br />a. Payment for infrared patching shall be made at the unit price set forth in the proposal for the <br />specified depth of patch. <br />b. Quantities for this item are estimated at 5% of the total patches. Actual quantities purchased <br />may be greater or less than the quantity in the proposal. <br />5. The item will be paid for as specified in the proposal as follows: <br />Patch, Infrared, 5 ft. by 7 ft. by <br /> <br /> <br /> <br />Version 4/2/2019 Page - 8 Public Works Quote <br /> <br />