Crack Leveling

2026-11-03

I . DESCRIPTION This work consists of repairing recessed joints in asphalt concrete pavement with a specified sealant material without milling or routing . II . MATERIALS Asphalt repair mastic will be composed of quality - selected asphalt and / or resins , select aggregates with structural integrity , synthetic rubber polymers , antioxidants , naturally occurring and man - made reinforcing material , and other modifiers . Asphalt repair mastic will be Deery Level and Go Repair Mastic , Crafco Mastic One , Maxwell GAP MOD 201 , or SAMIscreed meeting the appropriate specifications below or an approved equal . A . Deery Level and Go Repair Mastic PROPERTIES OF MASTIC BINDER Test Method Specification Penetration @ 77  F ( 25  C ), 150 g , 5 sec ASTM D5329 100 dmm Max . Penetration @ 122  F ( 50  C ), 150 g , 5 sec ASTM D5329 150 dmm Max . Flow @ 140 ˚ F ( 60 ˚ C ), 75 ˚ angle , 5 hours ASTM D5329 3 mm Max . Softening Point ( R & B ) ASTM D36 190  F ( 88  C ) Min . Flexibility @ 32 ˚ F ( 0 ˚ C ) 0 . 25 ” mandrel , 90 ˚ bend , 10 sec ASTM D3111 Modified Bend Without Cracking CONSTRUCTION REQUIREMENTS A . Surface Preparation : All surfaces will be dry and free of all dirt , dust , grease , and loose material prior to application of the mastic . All surfaces will be cleaned by the use of compressed air produced from an air - compressor with the capability of producing a minimum of 125 cfm ( 0 . 06 cubic meters per second ) of clean , oilfree compressed air equipped with a maximum of a ¾ inch ( 20mm ) diameter nozzle . The use of “ backpack ” type blowers is not allowed . In the event of surface temperatures falling below 40 ˚ F ( 4 ˚ C ), a compressed air heat lance will be used to thoroughly dry all moisture and heat the surface area as per the manufacturer ’ s recommendations . The compressed air heat lance will produce a minimum temperature of 750 ˚ F ( 399 ˚ C ) at a minimum velocity of 650 feet per second . The compressed air must be produced from an aircompressor with the capability of producing a minimum of 125 cfm ( 0 . 06 cubic meters per second ) of clean , oil - free compressed air . The use of direct flame dryers will not be permitted . Caution will be taken as to not overheat pavement surfaces . When recommended by the mastic manufacturer , a surface conditioner or primer approved by the mastic manufacturer will be applied to the surfaces prior to placement of the asphalt repair mastic to promote increased surface adhesion to the existing pavement . If used , the surface conditioner or primer must thoroughly cover all surface areas where the asphalt repair mastic will be placed . The installation of the asphalt repair mastic will not take place until the surface conditioner or primer has cured to a “ tacky ” consistency .

South Dakota

2026-05-15