3728.1SCOPE
Provide cold applied, mineral filled, joint sealing compound for joints of bell and spigot or tongue and groove, concrete or clay Culvert, sewer, or drain pipe.
3728.2REQUIREMENTS
Provide a bituminous mastic joint sealer consisting of refined petroleum asphalt meeting the requirements of ASTM D4586, Standard Specification for Asphalt Roof Cement, Asbestos-Free, except for the following modifications: Table 3728.2-1 ASTM D4586 Modifications Test Requirement Grease cone penetration (unworked) 150 grams, 77°F, 5 seconds, ASTM D217* 175 dmm – 300 dmm Density ≥ 8.75 pounds per gal Non-volatile content ≥ 65 percent Ash content, by ignition 25 – 45 percent Cure Evaluation at 77°F Tough, plastic coating, free of blisters * ASTM D217, Standard Test Methods for Cone Penetration of Lubricating Grease
Do not use coal tar products. Provide Material exhibiting 100 percent adhesion and cohesion when applied to metal, concrete, or vitrified clay surfaces.
3728.3SAMPLING AND TESTING
Submit to the Engineer a manufacturer’s Certificate of Compliance.
Apply the bituminous mastic joint sealer in a layer 1/16 inch to 1/8 inch thick on a tinned metal panel. Cure the joint sealer at 77°F for 24 hours. An acceptable bituminous mastic joint sealer will set to a tough, plastic coating, free of blisters.
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