Method of replacing a longitudinal joint

Abstract

Systems and methods for performing repairs to a longitudinal joint are disclosed. In certain methods, a pavement surface having a longitudinal joint formed by two adjacent pavement passes is disclosed. Milling out a section of a substrate that comprises the longitudinal joint is also disclosed. Also disclosed is applying a void reducing asphalt membrane to the surface of the milling slot. Hot mix asphalt may be used to fill milling slot with void reducing asphalt membrane applied.

1 . A method of replacing a longitudinal joint, comprising:
 identifying a substrate having a longitudinal joint formed by two adjacent pavement passes;   milling out a section of the substrate that comprises the longitudinal joint to a depth of at least 1 inch and a width of at least 6 inches to create a milling slot having a surface; and   applying a void reducing asphalt membrane to the surface of the milling slot.   
     
     
         2 . The method of  claim 1 , further comprising filling the milling slot with a hot mix asphalt material, wherein the hot mix asphalt material contains a volume of air voids. 
     
     
         3 . The method of  claim 2 , further comprising compacting the hot mix asphalt, whereby the void reducing asphalt membrane migrates upward to reduce the volume of air voids. 
     
     
         4 . The method of any of  claim 1 , wherein the void reducing asphalt membrane comprises at least one asphaltic binder, at least one elastomeric polymer, at least one thickener, and at least one additive to reduce tackiness. 
     
     
         5 . The method of  claim 4 , wherein the at least one thickener comprises a wax. 
     
     
         6 . The method of  claim 4 , wherein the at least one additive comprises fumed silica or fumed alumina. 
     
     
         7 . The method of  claim 4 , wherein the at least one elastomeric polymer comprises a styrene-butadiene-styrene polymer. 
     
     
         8 . The method of  claim 1 , wherein the pavement surface is milled at a depth of about 1.5 to about 6 inches. 
     
     
         9 . The method of  claim 1 , wherein the pavement surface is milled at a depth of about 2 to about 4 inches. 
     
     
         10 . The method of  claim 1 , wherein the pavement surface is milled at a width of about 8 to about 40 inches. 
     
     
         11 . The method of  claim 1 , wherein the pavement surface is milled at a depth of about 12 to about 30 inches. 
     
     
         12 . The method of  claim 1 , wherein the void filling asphalt membrane is applied at a rate of about 0.1 gallon/square yard (gal/yd 2 ) to about 1 gal/yd 2 . 
     
     
         13 . The method of  claim 1 , wherein the void filling asphalt membrane is applied at a rate of about 0.15 gal/yd 2  to about 0.25 gal/yd 2 . 
     
     
         14 . The method of  claim 1 , wherein the void filling is applied by spraying, brooming, or dragging. 
     
     
         15 . A method of replacing a longitudinal joint, comprising:
 identifying a section of a substrate having a longitudinal joint formed by two adjacent paving passes, wherein at least a portion of the longitudinal joint comprises a milling slot having a surface, wherein the milling slot has a depth of at least 1 inch and a width of at least 6 inches; and   applying a void reducing asphalt membrane to the surface of the milling slot.   
     
     
         16 . The method of  claim 1 , wherein the substrate comprises a roadway, a parking lot, or a runway. 
     
     
         17 . The method of  claim 1 , wherein the substrate comprises an asphalt concrete or a cement concrete. 
     
     
         18 . The method of any of  claim 3 , further comprising applying a penetrating asphalt emulsion over at least a portion of the substrate and the compacted hot mix asphalt.