Section 414 — Asphalt Pavement Crack and Joint Sealing and Filling

FILLING

Description

414.01This work consists of sealing and filling cracks and joints in asphalt pavement surfaces.

Material

414.02Conform to the following Subsections: Hot-applied asphalt aggregate-f illed mastic 702.03 Joint sealants and crack fillers 712.01(a)

Construction Requirements

414.03General. Complete crack and joint sealing and filling in a continuous operation. Prevent debris from entering waterways, travel lanes open to public traffic, or areas designated not to be disturbed. Remove dirt, dust, vegetation, and other deleterious material from the crack and joint walls and cavity using a stream of air or other approved methods. Blow or brush dry material off the pavement surface.

414.04Equipment. Provide equipment conforming to the following:

(a)Router. A power rotary impact router or vertical spindle router that can create a reservoir to the required depth and width without damaging adjacent pavement.

(b)Hot air lance. A hot compressed air lance that can provide clean, oil -free compressed air at a volume of 100 cubic feet per minute, a pressure of 120 pounds per square inch, a nd a temperature of 2000 °F.

(c)Application wand. A wand attached to a heated hose attached to a heated material chamber that maintains material temperature within the manufacturer’s tolerances. Provide proper wand tips for desired application.

(d)Heating kettle . An indirect -heating double boiler that can provide constant and effective agitation. Fill the space between the inner and outer shells with oil or other heat transfer medium. Provide an accurate and calibrated thermometer with a range from 200 to 600 °F in 5 °F graduations located so the material temperature can be safely checked.

(e)Squeegee or screed. A hand- held squeegee or screed of appropriate configuration for filling cracks and joints flush with the surface, underfilling cracks and joints to recess below the surface, or overfilling cracks and joints to an overband shape.

(f)Compressor. A compressor that can produce oil- and water -free air at a rate of at least 100 cubic feet per minute with a continuous line pressure of at least 125 pounds per square inch.

414.05Routing. Rout ⅛- to ½- inch wide cracks to produce vertical, intact walls and a flat bottom with a reservoir centered over the crack. Make the reservoir two to three times the width of the crack. Rout cracks to a depth of ½ to ¾ inch. Do not all ow traffic to damage routed cracks.

414.06Sealing and Filling. Do not seal or fill cracks and joints when the pavement surface temperature is below 35 °F or weather conditions include precipitation or fog. Dry the crack and joint surfaces with a hot air lance before sealing or filling. Keep the hot air lance moving to prevent burning the pavement surface. Place and finish the material within 5 minutes after heating the pavement surface with the hot air lance.

(a)Sealing (routed cracks and cracks or joint s averaging ¼ to 1 inch wide). Submit a copy of and follow the manufacturer’s recommendations for heating and applying the hot applied crack material. Heat the material to pouring temperature in a heating kettle and continuously agitate the material. Discard sealant if:

(1)Heated above the safe heating temperature recommended by the manufacturer;

(2)Held at pouring temperature for more than 12 hours;

(3)Reheated more than once;

(4)Not consistent or uniform in appearance; or

(5)Recommended by the manufacturer. Use an appli cation wand to place material in each crack and joint from the bottom up. Insulate the wand to maintain pouring temperature while placing material. Return the wand to the heating kettle immediately after sealing each crack. Use a squeegee or screed to stri ke off the material. Seal joints between the pavement and curb and gutters.

(b)Filling (cracks averaging more than 1 inch wide). Fill each crack with an asphalt mastic according to the manufacturer’s recommendations or asphalt mix according to Section 403, Type II . Use a squeegee, screed, or other suitable equipment to force the mix into the crack. Fill each crack flush with the pavement surface and compact the asphalt mixture. Do not allow traffic on sealed or filled cracks un til the sealant or filler has cured or is treated with an approved debonding material recommended by the manufacturer.

414.07Resealing Cracks and Joints. Reseal cracks and joints exhibiting adhesion failure, damage, incomplete filling, or foreign objects in the sealant.

414.08Acceptance. Material for asphalt pavement crack and joint sealing and filling will be evaluated under Subsections 106.02 and 106.03. Asphalt pavement crack and joint sealing and filling will be evaluated under Subsections 106.02 and 106.04.

Measurement

414.09Measure the Section 414 pay i tems listed in the bid schedule according to Subsection 109.02 .

Payment

414.10The accepted quantities will be paid at the contract price per unit of measurement for the Section 414 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05 .