Bulk Specific Gravity
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1
for core samples, what must be done before you can run a bulk specific gravity?
cores must be oven dried overnight at 2 hour intervals to constant mass
or
Cores can be vacuum dried to constant mass
(Constant mass = % change in mass <= 0.05%)
or
Cores can be vacuum dried to constant mass
(Constant mass = % change in mass <= 0.05%)
2
do lab compacted samples need to be dried out?
no
recently compacted samples not exposed to moisture dont need drying
recently compacted samples not exposed to moisture dont need drying
3
what temperature do core samples need to be dried at?
125F (+/- 5F)
4
when do you take the weight while suspending a core/marshall?
1 when it is dry
2 when it has been submersed in water for 4 minutes
3 after you take it out of the water and dab it with a damp towel
2 when it has been submersed in water for 4 minutes
3 after you take it out of the water and dab it with a damp towel
5
what is considered damp?
when wrung out it is wet but no water leaks out
6
what do you round to when taking mass during the suspension process?
0.1g
7
how long do you submerse the pill in water for?
4 min (+/- 1min)
8
what temp does the water need to be during suspension?
77F (+/- 2F)
9
how long after removing the pill from water do you have to dab water off with a damp towel?
15 seconds
10
what is the Gmb (bulk specific gravity) equation?
11
where do you round to when calculating Gmb (bulk specific gravity)?
0.001
12
how do you calculate % of water absorbed by volume?
13
what do you round to when recording the % of water absorbed?
0.01% (0.0001 if skipping the "x100")