A cement overlay is {TAIL ~ a slurry type mixture} of {HEAD ~ cement}, sand and polymers 
A cement overlay is { TAIL ~ a slurry type mixture } of { HEAD ~ cement } , sand and polymers
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH