Exam (elaborations) NICET Soils level 1

NICET Soils
level 1

, Define C117 - CORRECT ANSWERS-The determination of the amount of material finer
than a 75-um (No.200) sieve

What is the significance of C136? - CORRECT ANSWERS--To determine the grading of
materials,
-compliance of particle size distribution,
-provide data for control of production of various aggregate
-developing relationships concerning porosity and packing

What procedure should always be used unless otherwise specified in c117? -
CORRECT ANSWERS-Procedure A

What is an appropriate wetting agent to use for sieving through a No.200 sieve? -
CORRECT ANSWERS-Water or any dispersing agent that will promote separation of
the fine materials

What should the temperature of the oven be when drying samples?(C117) - CORRECT
ANSWERS-110 °C (+-5)

If used, how much wetting agent should be used in procedure B? C117 - CORRECT
ANSWERS-Enough to produce a small amount of suds when the sample was agitated

Report the amount retained by wash by....?(C117) - CORRECT ANSWERS-<10%-
report to the .1%
>10%-report to the nearest whole number

How long do you sieve material? C136 - CORRECT ANSWERS-so that not more than
1% of material retained on any sieve will pass during 1 minute of hand sieving

How accurate shall balances be fo fine aggregate? C136 - CORRECT ANSWERS-
readable to the nearest .1 Gram or .1%

How accurate shall balances be for course aggregate or mixtures? C136 - CORRECT
ANSWERS-readable to the nearest .5 gram or nearest .1%

What is the significance of C117? - CORRECT ANSWERS-Accurate determination of
material finer than 75-um in mineral aggregate by washing

What practice is used for sampling aggregate? - CORRECT ANSWERS-D75

The investigation of potential sample material should be performed by....? D75 -
CORRECT ANSWERS-A responsible, trained and experienced person