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Terms in this set (56)
Follow ________ safety guidelines at quarries.
Follow ________ safety guidelines inside the TDOT Lab.
Standard aggregate sizes range from #____ to #_______.
#1 aggregate is more _______ than #10 aggregate.
#10 aggregate is more _______ than #1 aggregate.
__________ of aggregate is the smallest sieve opening through which the entire amount of aggregate is required to pass.
_____________ of aggregate is the smallest sieve opening through which the entire amount of the aggregate is permitted to pass.
Nominal maximum size
Coarse aggregate is typically __________ on the No. 4 sieve.
Fine aggregate ________ the No. 4 sieve.
_________ is equally important as the testing of the aggregate.
Sampling conducted with a Flowing Aggregate Stream is done in _______ increments.
Sampling conducted with a Conveyor Belt is done in ________ increments.
Production must be __________ while sampling from a conveyor belt.
Stockpiles have a tendency to _______ during their construction.
When sampling stockpiles with power equipment, the loader must enter the stockpile with its bucket approximately ______ inches above ground level.
After scooping a load from the larger stockpile, the loader must raise the bucket __________ to the ground.
After dumping the material into a smaller stockpile, the loader is used to __________ it one time.
After the smaller stockpile has been backbladed by the loader, it is to be divided into ________ quadrants.
Avoid sampling a stockpile within ______ feet of the sample pad edge.
If power equipment is not available, the large stockpile is visually divided into _______ even sections.
After the large stockpile has been visually divided into 3 sections, portions are obtained from each section at least ______ inches below the surface.
Sampling tubes are used for ______ aggregate only.
When using sampling tubes, the samples should be taken at a minimum height of _______ feet from the surrounding grade.
When using sampling tubes, at least ______ randomly spaced tube insertions should be made across the stockpile.
Sampling tubes should have minimum depth of ______ feet, and a minimum width of _______ inches.
__________ and _________ are used to determine the necessary sample reduction method.
The Mechanical Splitter used for coarse and combined aggregates must have at least _____ chutes.
The Mechanical Splitter used for fine aggregates must have at least ____ chutes.
When using the cone and quarter method, you must turn the sample over _____ times before placing it into a cone.
After coning the sample, you must ______ the cone to a uniform thickness with a diameter of ______ to ______ times the thickness.
After quartering the flattened sample, you must remove ______ diagonal quarters and mix them together.
Sample reduction by means of the miniature stockpile should have ____ increments at _____ locations taken from it.
When determining sample mass for drying, weigh the sample to the nearest whole ______.
Dry the aggregate to a constant mass in an over at _______ degrees.
Moisture Content % = ( ______ - ______ ) / _______ x 100
Use a wetting agent when washing aggregate containing _______ particles.
Percent < No. 200 = ( _________ - ________ ) / ___________ x 100
When using a mechanical shaker, agitating the aggregate for more than _____ minutes can degrade the sample.
AASHTO Loss must be less than or equal to ______ %
AASHTO Loss = ( _________ - _________) / __________ x 100
Cumulative % Retained = __________ / ________ x 100
Cumulative Weight Retained
Cumulative % Passing = 100 - _________
Cumulative % Retained
_______ is the ratio of aggregate weight to the weight of an equal volume of water.
When dealing with specific gravity, it is always true that _________ > ______> _______.
The ______________ is the numerical value to indicate fineness of aggregate.
The higher the fineness modulus, the more ______ the material is.
The ______ ________ _______ test simulates weathering under exposed applications such as asphalt, concrete, or base.
Sodium Sulfate Soundness
_____________ is the measure of a coarse aggregate's resistance to degradation after under going a combination of abrasion, grinding, and impact.
During the L.A. Abrasion process, the aggregate is separated into specific sizes and placed into a drum with:
_________ is a very hard mineral that resists polishing under traffic and TDOT requires a minimum amount.
____________ is the primary mineral in limestone and tends to polish under traffic.
The British Wheel and Pendulum simulates:
Test strips are required for Type _____ , _____ , & _____ surface aggregate.
Surface aggregate test strips have a minimum test time of ____ years.
Surface aggregate test strips must be approximately ______ miles in both direction with a speed of at least ______ mph.
Base stone protects the:
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