FIELD DENSITY TEST METHOD
FIELD DENSITY TEST METHOD
(OP)
Which is a better method to get degree of compaction of soil? Sand-cone method or Nuclear density method?
Thanks.
Thanks.
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FIELD DENSITY TEST METHOD
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RE: FIELD DENSITY TEST METHOD
RE: FIELD DENSITY TEST METHOD
RE: FIELD DENSITY TEST METHOD
RE: FIELD DENSITY TEST METHOD
I can make a case for & against each method.
For either method -- proper equipment, proper calibrations & proper operator technique will produce good results. An experienced operator will recognize oddball soil & site conditions.
The sand cone method has a lot of steps & computations ... mostly simple but potential sources of error, especially if the operator doesn't run the test often.
The nuclear gauge is comparatively simple and yet many operators I've seen tend to be VERY cavalier and thus, sloppy.
RE: FIELD DENSITY TEST METHOD
Military bases in my area can't seem to get away from the sand cone. Personally I believe the sand cone is more accurate, if performed properly. You can turn the nuke gauge 45 degrees and yield a different density.
RE: FIELD DENSITY TEST METHOD
I prefer the sand cone or the rubber balloon method - but, as pointed out, you will need to do drying in an oven (min 18h or standard 24 h) or a microwave (speedy moisture is also used but it should also be "checked" and isn't wholly reliable on all types of soils). In clays, you might consider using the drive tube sample (min 100 mm diameter).
My single caution - regardless of what test you use: ALWAYS and I mean ALWAYS check to ensure that the test result is on the correct side of the zero air voids line. If the manure hits the fan, you will be glad you did.
RE: FIELD DENSITY TEST METHOD