408Joint and Crack Sealant

Joint and Crack Sealant

Description

408.01This work consists of furnishing and placing an approved hot poured joint and crack

sealant from the Department’s Approved Products List in properly prepared cracks in asphalt pavements. Cracks with a width greater than 1/8 inch and less than 1 inch are to be filled with this material.

Materials

408.02Materials for hot poured joint and crack sealant shall meet the requirements of

subsection 702.04.

Using a mixture of different manufacturers’ brands or different types of sealant is prohibited.

Construction Requirements

408.03Immediately before applying hot poured joint and crack sealant, the cracks shall be

cleaned of loose and foreign matter to a depth approximately twice the crack width. Cleaning shall be performed using a hot compressed air lance. This lance shall be used to dry and warm the adjacent asphalt immediately before sealing. Direct flame dryers shall not be used.

These Cracks shall be filled with hot poured joint and crack sealant flush with the pavement surface. Immediately following the filling of the crack, excess sealant shall be leveled off at the wearing surface by squeegee, a shoe attached to the applicator wand, or other suitable means approved by the Engineer. The squeegeed material shall be centered on the cracks and shall not exceed 3 inches in width or 1/16 inch in depth.

The sealant material shall be heated and applied according to the manufacturer’s recommendations. The equipment for heating the material shall be an indirect heating type double boiler using oil or other heat transfer medium and shall be capable of constant agitation. The heating equipment shall be capable of controlling the sealant material temperature within the manufacturer’s recommended temperature range and shall be equipped with a calibrated thermometer capable of plus or minus 5 °F accuracy from 200 to 600 °F. This thermometer shall be located so the Engineer can safely check the temperature of the sealant material. Overheating of the sealant material will not be permitted.

The face of the crack shall be surface dry, and the air and pavement temperatures shall both be at least 40 °F and rising at the time of sealant application.

Sealant material picked up or pulled out after being placed shall be replaced at the Contractor’s expense. The Contractor shall have blotter material available on the project in the event it is required to prevent tracking or pulling. If required, blotter material shall be approved by the Engineer and placed at the Contractor’s expense.

408.04

Method of Measurement

408.04Hot poured joint and crack sealant will be measured by the ton of material used

The Engineer may require the weighing of equipment for determination of actual quantities of material used.

Basis of Payment

408.05The accepted quantities will be paid for at the contract unit price per ton

Payment will be made under:

Pay Item Pay Unit Hot Poured Joint and Crack Sealant Ton All materials, equipment, and costs incidental to the preparation of the surface before application of the hot poured joint and crack sealant will not be paid for separately but shall be included in the work.

409.01