{TAIL ~ The mix} is poured over {HEAD ~ existing concrete}, wood, asphalt, etc. typically at anywhere from of an inch up to 2 inches thick 
{ TAIL ~ The mix } is poured over { HEAD ~ existing concrete } , wood , asphalt , etc . typically at anywhere from of an inch up to 2 inches thick
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH