Section 418 — Asphalt Concrete Pavement Patching
Description
418.01This work consists of repairing distressed areas of asphalt concrete pavement by patching.
Construction Requirements
418.02General. The approximate type, size, and location of asphalt concrete pavement patches are shown in the plans. The final area will be approved. Place and compact asphalt concrete pavement according to S ection 403 so the patched surface matches the same grade as the adjacent surface. Dispose of debris and unsuitable and excess material according to Subsection 203.07.
418.03Asphalt Concrete Pavement Patch, Type 1. Type 1 patching consists of removal and replacement of asphalt concrete pavement, base, and subgrade materials.
(a)Patch areas. Extend the repair area 12 inches beyond the distressed area. If patch limits are within 24 inches of the pavement edge, extend the patch limit to the pavement edge. Make the minimum transverse dimension of the patch one -half of the travel lane width and the minimum longitudinal dimension of the patch 36 inches.
(b)Pavement removal. Mill completely through the pavement or saw cut and remove the pavement. If sawcutting, cut through the existing pavement and around the perimeter of the patch area. Make saw cuts p erpendicular to the roadway surface and at right angles to each other. Remove the pavement, base, and subgrade to the depth shown in the plans.
(c)Patching. If shown in the plans, place geogrid or geotextile according to Secti on 207. Place and compact crushed aggregate according to Section 302. Asphalt millings may be used for crushed aggregate material. Apply an asphalt tack coat to the edges of the patch area according to Section 412. Provide asphalt concrete pavement with a JMF meeting the requirements of Section 403.
418.04Asphalt Concrete Pavement Patch, Type 2. Type 2 patching consists of removal and replacement of asphalt concrete pavement and a portion of the underlying materials. Remove asphalt concrete pavement and underlying materials to the depth shown in the plans.
(a)Patch areas. Extend the repair area 12 inches beyond the distressed area. If patch limits are within 24 inches of the pavement edge, extend the patch limit to the pavement edge. Make the minimum length and width of the patch 36 inches.
(b)Pavement removal. Remove pavement according to Subsection 418.03(b) , except remove the pavement to expose subbase or subgrade as shown in the plans.
(c)Patching. Apply a n asphalt tack coat to the edges of the patch area according to Section 412. Provide asphalt concrete pavement with a JMF meeting the requirements of Section 403.
418.05Asphalt Concrete Pavement Patch, Type 3. Type 3 patching consists of removal and replacement of an asphalt concrete pavement.
(a)Pavement removal. Remove distressed asphalt concrete pavement by approved methods. Clean the patch area by sweeping or other approved methods.
(b)Patching. Apply a n asphalt tack coat to asphalt concrete surfaces within the patch area according to Section 412. Provide asphalt concrete pavement with a JMF meeting the requirements of Section 403. Place the asphalt material either by hand, with a blade, or other approved methods.
418.06Acceptance. Construction of asphalt concrete pavement patching will be evaluated under Subsections 106.02 and 106.04. Asphalt concrete will be evaluated under Section 403. Asphalt tack coat will be evaluated under Section 412. Crushed aggregate will be evaluated under Section 302. Separation and stabilization geotextiles and geogrid will be evaluated under Section 207.
Measurement
418.07Measure the Section 418 pay items listed in the bid schedule according to Subsection 109.02 .
Payment
418.08The a ccepted quantities will be paid at the contract price per unit of measurement for the Section 418 pay items listed in the bid schedule. Payment will be full compensation for the work prescribed in this Section. See Subsection 109.05 . 424 DIVISION 500