Exam (elaborations)
Sample Written Exam Question
Sample Written Exam Question
[Show more]
Content preview
Sample Written Exam QuestionThe method of determining air content of concrete containing lightweight aggregate is
the pressure method.
A. True
B. False - ANS-B. False
Is the following statement true of false?
When making a test cylinder from concrete being used in construction , the field
technician must also measure the slump of the concrete.
A. True
B. False - ANS-A. True
While the technician is checking the slump of the concrete , there is a decided falling
away or shearing off of concrete from one side of the sample. What should the
technician do?
A. Measure the slump directly over the center of the original base of the mold
B. Measure the slump at the average distance above the original center
C. Disregard the test and retest on another portion of the sample
D. None of the above - ANS-C. Disregard the test and retest on another portion of the
sample
Preparation of specimens for transport includes:
A. Determination that at least 8 hour has elapsed since final set
B. Ensuring specimens have not been demolded
C. Allowing the specimen to air dry for at lease 4 hour - ANS-A. Determination that at
least 8 hour has elapsed since final set
If the aggregate correction factor for a given source of fine and coarse aggregate is
found to be 0.2 % in a pressure air meter , and an air content value of 5.0 % is read on
the gage of the same air meter containing concrete with the same aggregate , what is
the correct air content?
A. 3.0 %
, B. 5.2 %
C. 4.8 %
D. 0.4 % - ANS-C. 4.8 %
Strength test specimens transported from the field to the testing laboratory must be:
A. Protection from jarring
B. Protection from moisture loss
C. Protection from freezing
D. A and B only
E. A , B , and C - ANS-E. A , B , and C
Tests for slump and air content must be started within ________ after obtaining the final
portion of the composite sample.
A. 5 min.
B. 10 min.
C. 15 min.
D. 30 min. - ANS-A. 5 min.
The minimum size for sample to be used for strength test is:
A. 14 L ( 1/2 ft³ )
B. 28 L ( 1 ft³ )
C. 57 L ( 2 ft³ )
D. 85 L ( 3 ft³ ) - ANS-B. 28 L ( 1 ft³ )
Is the following statement true or false?
After strike off the measure used to determine density , a small quantity of concrete may
be added to correct a deficiency.
A. True
B. False - ANS-B. False
For normal strength concretes , what temperature range must be maintained for test
cylinders during initial curing?
A. 0 to 16° C [ 32 to 60° F ]
B. 16 to 27° C [ 60 to 80° F ]
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller EXAMQA. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for CA$16.59. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
62890 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now