408SEALING OR FILLING CRACKS AND JOINTS

408.01Description

This work shall consist of sealing or filling longitudinal and transverse cracks and joints in existing asphalt pavement in accordance with 105.03.

Full lane width transverse cracks and longitudinal joints shall be routed and sealed. All other cracks shall be filled.

MATERIALS 10

408.02Materials

Materials shall be in acco rdance with the following:

Asphalt Binder, PG 64-22* ......................................... 902.01(a) 407.04

Asphalt Emulsion for Crack Filling, AE-90S .............. 902.01(b) Fine Aggregates, No. 23 or No. 24 .............................. 904.02 Joint Sealing Materials ................................................ 906.02(a)2 * A PG 64-22 asphalt binder shall be used to fill cracks on a surface that is milled in accordance with 306, and 20 polypropylene fibers shall be used only in conjunction with warranted micro-surfacing.

CONSTRUCTION REQUIREMENTS

408.03Equipment

A distributor in accordance with 409.03 shall be used when crack filling with asphalt emulsion or an indirect-heat double boiler kettle with mechanical agitator shall be used when filling with hot poured material. An indirect-heat double boiler kettle with mechanical agitator shall be used when routing and sealing. Air compressors shall 30 be capable of producing a minimum air pressure of 100 psi.

408.04Weather Limitations

Sealing or filling operations shall not be conducted on a wet surface, when the ambient temperature is below 40°F, or when other unsuitable conditions exist, unless approved by the Engineer.

408.05Routing and Sealing Cracks and Joints

Cracks and joints, 1/2 in. or less in width, shall be routed with a routing machine capable of cutting a uniform shape to form a reservoir not exceeding 3/4 in. wide with 40 a minimum depth of 3/4 in. Cracks and joints shall be cleaned by blowing with compressed air or by other suitable means. The operation shall be coordinated such that routed materials do not encroach on pavement lanes carrying traffic and all routed materials are disposed of in accordance with 104.07. Cracks and joints shall be sealed with hot poured joint sealant to within 1/4 in. below the surface in accordance with the manufacturer’s recommendations.

408.06Filling Cracks

Cracks shall be cleaned by blowing with compressed air or by other suitable means. Asphalt material shall be placed utilizing a “V” shaped wand tip, to allow the 50 penetration of the materials into the cracks. The cracks shall be completely filled or overbanded not to exceed 5 in., or as requi red. All excess asphalt material shall be removed from the pavement. The filled cracks shall be covered with sufficient fine aggregate or other suitable material to prevent tracking of the asphalt materials. All excess cover material shall be removed from the pavement within 24 h, when directed.

Application of asphalt materials shall be completed without covering existing pavement markings. When traffic is to be maintained within the limits of the section, temporary traffic control measures in accordance with 801 shall be used. Treated areas shall not be opened to traffic until the asphalt material has been absorbed. 60

408.06

408.07Method of Measurement

Sealing and filling of cracks and joints in asphalt pavements will be measured by the ton of material used. Routing of cracks and joints will not be measured.

Temporary traffic control measures will be measured in accordance with 801.17.

408.08Basis of Payment

Sealing and filling of cracks and joints in asphalt pavements will be paid for by the ton of material used for the type specified. 70

Temporary traffic control measures will be paid for in accordance with 801.18.

Payment will be made under:

Pay Item Pay Unit Symbol

Cracks and Joints in Asphalt Pavement, Rout and Seal ............ TON Cracks in Asphalt Pavement, Fill .............................................. TON

The cost of all materials, cover aggregat e, cleaning, and all necessary incidentals shall be included in the cost of the pay items in this section.