ACI Aggregate Testing Technician - Level 1 - Section 1.

ACI Aggregate Testing Technician - Level 1 - Section 1 .
AASHTO T 2 / ASTM D75
Four purposes for which aggregates are sampled.
a) for the acceptance or rejection of materials.
b) for the control of operations at the site of use.
c) for preliminary investigation of the potential source of supply.
d) for the control of the product at the source of supply
AASHTO T 2 / ASTM D75
Sampling should be done very carefully because it is as important as _____.
Testing
AASHTO T 2 / ASTM D75
A variety of people involved in the use of the aggregate samples are responsible for obtaining the
samples.
True
AASHTO T 2 / ASTM D75
The _____ or _____ should obtain samples related to the control of production at the source or related to the control of the work at the site.
Manufacturers, contractors
AASHTO T 2 / ASTM D75
The purchaser is responsible for obtaining samples for preliminary investigation tests.
False; purchaser is responsible for obtaining samples used in acceptance or rejection decisions
AASHTO T 2 / ASTM D75
Samples to be tested for quality should, when possible, be obtained from the _____.
Finished product
AASHTO T 2 / ASTM D75
Appropriate equipment for inspection and sampling should be provided by _____.
the seller
AASHTO T 2 / ASTM D75
Use a ____ method for selecting samples from conveyor belts.
Random
AASHTO T 2 / ASTM D75
The four sources from which field samples can be obtained include:
1) flowing aggregate streams;
2) ______
3) ______ or / and
4) _____
Conveyor belts, stockpiles or transportation units, roadway bases