Mixing of {HEAD ~ the PMA blend} is performed without {TAIL ~ substantial delay} following blending of the polymer asphalt master batch with the asphalt cross linking agent blend 
is performed without
Mixing of { HEAD ~ the PMA blend } is performed without { TAIL ~ substantial delay } following blending of the polymer asphalt master batch with the asphalt cross linking agent blend
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH