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Define C117 The determination of the amount of material finer than a 75-um (No.200) sieve
What is the significance of C136? -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 Procedure A
specified in c117?
What is an appropriate wetting agent to use for sieving Water or any dispersing agent that will promote separation of the fine materials
through a No.200 sieve?
What should the temperature of the oven be when drying 110 °C (+-5)
samples?(C117)
If used, how much wetting agent should be used in Enough to produce a small amount of suds when the sample was agitated
procedure B? C117
Report the amount retained by wash by....?(C117) <10%-report to the .1%
>10%-report to the nearest whole number
How long do you sieve material? C136 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 readable to the nearest .1 Gram or .1%
How accurate shall balances be for course aggregate or readable to the nearest .5 gram or nearest .1%
mixtures? C136
, What is the significance of C117? Accurate determination of material finer than 75-um in mineral aggregate by
washing
What practice is used for sampling aggregate? D75
The investigation of potential sample material should be A responsible, trained and experienced person
performed by....? D75
What should a stockpile be visually inspected of? D75 Discernable Variations
Where shall a sample be obtained where practicable? From the finished product
D75
After a sample is obtained what shall not be done unless Further crushing or manual reduction
required for testing purposes? D75
What shall be done if there are any discernable Variations Corrective action shall be taken to establish homogeneity in the material
in a stockpile? D75
If it is necessary to indicate the degree of variation in a Separate samples shall be drawn from separate areas of the pile
stockpile, what shall be done? D75
What increases when sampling from the beginning or the The potential of obtaining segregated material
final few tons of a conveyor belt? D75
When should method A be used in a standard proctor? When 25% or less material is retained on a No. 4 sieve
D698
When should method B be used for standard proctor? When 25% or less material is retained on a 3/8" sieve
D698
When should method C be used for standard proctor? When 30% or less material is retained on a 3/4" sieve
D698
When should a correction factor be established on a When the test specimen contains more than 5% of oversize fractions
standard proctor? D698
for purposes of comparing measured or calculated The nearest decimal or significant digit
values, what shall the value be rounded to? D698
The procedures in D698 are considered...? industry standard
Define Standard Effort....D698 12,400 ft-Ibf/ft3 compactive effort applied by equipment in D698
Define Standard Optimum Water Content....D698 The molding water content at which soil can be compacted to the maximum dry
unit weight using standard compactive effort
Define oversized fractions...D698 The portion of a sample that does not pass through the required sieve in D698