Term
|
Definition
| Standard Practice for Sampling Aggregates |
|
|
Term
|
Definition
| Standard Practice for Sampling Aggregates |
|
|
Term
| Standard Practice for Sampling Aggregates |
|
Definition
|
|
Term
| Definition of Maximum size of aggregate |
|
Definition
| The smallest sieve opening through which the entire amount of aggregate is REQUIRED to pass. |
|
|
Term
| Definition of Maximum aggregate size (superpave) |
|
Definition
| one size larger than the nominal maximum aggregate size. |
|
|
Term
| Definition of Nominal maximum aggregate size (of aggregate) |
|
Definition
| The smallest sieve opening through which the entire amount of the aggregate is PERMITTED to pass. |
|
|
Term
| Definition of Nominal maximum aggregate size (superpave) |
|
Definition
| One size larger than the first sieve that retains more than 10% aggregate. |
|
|
Term
| When obtaining samples for testing the sampler shall... |
|
Definition
| Use every precaution to obtain samples that will show the nature and condition of the materials which they represent. |
|
|
Term
| ASTM - Who is responsible for obtaining the samples for preliminary investigation test? |
|
Definition
| The party responsible for development of the potential source. |
|
|
Term
| ASTM - Who is responsible for obtaining the samples for control of the production? |
|
Definition
| The manufacturer, contractor or other parties responsible for accomplishing the work. |
|
|
Term
| ASTM - Who is responsible for obtaining the samples for test to be used in acceptance or rejection decisions by the purchaser? |
|
Definition
| The purchaser or their authorized representative. |
|
|
Term
| AASHTO - Who is responsible for obtaining all aggregate samples except verification samples? |
|
Definition
|
|
Term
| Where practicable, samples to be tested for quality shall be obtained from... |
|
Definition
|
|
Term
| The material shall be inspected to determine discernible _______ |
|
Definition
|
|
Term
| When sampling from a flowing aggregate stream three things to remember are... |
|
Definition
1-Obtain at least three approximately equal increments.
2-The total sample mass equals or exceeds the minimum recommended in table 5.4.2
3-Take each increments from the entire cross section of the material. |
|
|
Term
| What is the process of sampling from a conveyor belt? |
|
Definition
1-Stop the conveyor belt.
2-Insert tow templates, with shape that conforms to the shape of the belt.
3-Carefully scoop all material between the templates.
4-Collect the fines on the belt with a brush and dust pan |
|
|
Term
| You should avoid sampling coarse aggregate or mixed coarse and fine aggregate from stockpiles, True or False? |
|
Definition
|
|
Term
| When sampling from stockpiles you should, |
|
Definition
| design a sampling plan for the specific case under consideration. |
|
|
Term
| What is the process for sampling from roadways |
|
Definition
1-Obtain at least three approximately equal increments.
2-Combined mass shall equal or exceed the minimum recommended in 5.4.2
3-Take all increments from the roadway for the full depth of material.
4-Clearly make the specific areas from which each increment is to be removed, a metal template placed over the area is a definite aid in securing approximately equal increment weights. |
|
|
Term
| How many field samples should be taken? |
|
Definition
| The number required depends on the criticality or, and variation in, the properties to be measured, and should be sufficient to give the desired confidence in test results. |
|
|
Term
| Two common keys to obtaining samples, regardless of method are... |
|
Definition
1-Obtain at least three approximately equal increments.
2-Combined sample mass equals or exceeds the minimum recommended in 5.4.2 |
|
|
Term
| When shipping samples they should be in... |
|
Definition
| bags or containers so constructed as to preclude loss or contamination. |
|
|
Term
| Sample containers shall have... |
|
Definition
| Suitable individual identification attached and enclosed so that field reporting, laboratory logging, and test reporting may be facilitated. |
|
|
Term
| Sample mass for fine aggregate |
|
Definition
|
|
Term
| Suggested method for sampling from stockpile and power equipment is available... |
|
Definition
| develop a separate small sampling pile composed of materials drawn from various levels and locations in the main pile. Take several increments of the sampling pile to compose the field sample. |
|
|
Term
| Suggested method for sampling from stockpile and power equipment is NOT available... |
|
Definition
| Samples from stockpiles should be made up of a least three increments taken from the top third, mid-point and bottom third of the volume of the pile. A board shoved vertically into the pile just above the sampling point aids in preventing further segregation. |
|
|
Term
| Suggested method to sample from transportation units... |
|
Definition
| Excavate three or more trenches across the unit. The trench bottom should be approximately level at least 0.3m in width and in depth below the surface. A minimum of three increments from equally spaced points along each trench should be taken by pushing a shovel downward into the material. |
|
|
Term
| Method for sampling from quarries or ledges... |
|
Definition
1-Inspect the quarry face for discernible variations or strata.
2-Gather 25kg form each stratum.
3-One or more pieces in each sample should be at least 150 by 150 by 100mm in size with the bedding plane plainly marked.
4-Record approximate quantity available; quantity and character of overburden; boundaries and location of material represented by each sample. |
|
|
Term
| What is the size of sample tubes for fine aggregates? |
|
Definition
| 30mm(1-1/4") diameter by 2m(6ft) long. |
|
|
