The asphalt cross linking agent blend comprises a second asphalt and {HEAD ~ at least one cross} linking {TAIL ~ agent} 
linking
The asphalt cross linking agent blend comprises a second asphalt and { HEAD ~ at least one cross } linking { TAIL ~ agent }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL