Constituent of concrete (9)
I believe the answer is:
aggregate
(Other definitions for aggregate that I've seen before include "Combine into a whole" , "Solid rock" , "Get garage to do sum" , "Sum total" , "Accumulation" .)
I believe the answer is:
aggregate
(Other definitions for aggregate that I've seen before include "Combine into a whole" , "Solid rock" , "Get garage to do sum" , "Sum total" , "Accumulation" .)