The Contractor shall undertake all work between the dates of May 1, 2024 and June 30, 2024 inclusive. Traffic Control for all linear markings on public streets and highways shall consist of an escort vehicle with a rotating amber beacon stationed to the rear of the crack filling equipment. The stationing distance shall be commensurate with the speed limit in force on the respective street or highway. Where necessary, the Contractor shall supply flag persons or barricades to protect Workers and the Work. Where traffic must be diverted temporarily to allow for asphalt filler cooling and set up, a traffic management plan shall be provided. The liquid Asphalt to be applied must included in the Alberta Transportation Products List for Crack Sealing. Liquid Asphalt shall be designed for the temperature ranges encountered in Northwestern Alberta. The Proposal Submission shall include the product name as well as the supplier and manufacturer.
Blotting Material may be sand, lime, limestone chips, potash, or cement powder. Surface Preparation shall include the drying, cleaning and removal of all vegetation, dirt, and debris from cracks. A hot air lance shall be used to ensure that the existing pavement temperature is a minimum of 40°C when applying the sealant. Unless the Manufacturer’s Specifications indicate otherwise, liquid asphalt shall be applied at a temperature at 190 – 210°C. The correct wand tip for the crack size shall be used to enable filling the crack from the bottom up. Sealant placed into and over the crack shall be shaped using a squeegee to create a band less than 3mm thickness and maximum 100mm wide over the crack and existing pavement. Blotting agents may not be applied until the liquid asphalt has sufficiently cooled to avoid inclusion of the blotting agent into the sealant.
Cracks having a width exceeding 35mm shall not be included in crack filling.
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