In place density of 3/4 Crushed stone
· Nuclear density determination on gravel with no fines is not particularly accurate whether you use backster or direct transmission. For determination of inplace density, use a direct volume replacement method such as the rubber ballon method (hard to find these days. You can also use the sandcone method, but you'll have to isolate the voids in the gravel by using Saran wrap to line the ...