The period of time that the PMA blend is mixed should be sufficient to ensure an effective dispersion and subsequent integration of the cross linking agent and {HEAD ~ polymer} to form {TAIL ~ a polymer network} within the asphalt, thus forming the PMA 
to form
The period of time that the PMA blend is mixed should be sufficient to ensure an effective dispersion and subsequent integration of the cross linking agent and { HEAD ~ polymer } to form { TAIL ~ a polymer network } within the asphalt , thus forming the PMA
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH