Exam (elaborations)
ACI CERTIFICATION- CONCRETE FIELD TESTING TECHNICIAN GRADE 1 CP-1 (12)
- Module
- Institution
ACI CERTIFICATION- CONCRETE FIELD TESTING TECHNICIAN GRADE 1 CP-1 (12)
[Show more]
Seller
Follow
GEEKA
Reviews received
Content preview
ACI CERTIFICATION- CONCRETE FIELD TESTINGTECHNICIAN GRADE 1 CP-1 (12)
ASTM C1064 - Answers -Standard Test Method For Temperature of Freshly Mixed
Hydraulic-Cement Concrete
The sensor of the temperature measuring device shall be submerged a minimum of
______ inches into the freshly mixed concrete. - Answers -3"
The temperature measuring device shall have a capacity of measuring temperature of
freshly mixed concrete to ± ______ °F throughout a range of ____________. - Answers
-1 degree, 30 degrees to 120 degrees
The temperature measuring device shall be calibrated ______ , or whenever there is a
question of ______ . - Answers -Annually, accuracy
The temperature of concrete may be measured in a wheelbarrow. True or False? -
Answers -True
The temperature of concrete may be measured in a wall form. True or False? - Answers
-True
What must be done to the sample container prior to sampling the concrete? - Answers -
Dampen with water
What must be done to the concrete surrounding the temperature measuring device after
the device is submerged in the fresh concrete? - Answers -Close off air voids by gently
pressing the concrete around the device
The molding of strength test specimens shall begin within _____ minutes after
fabricating the composite
sample. - Answers -15
The concrete sample must be protected from contamination and _____. - Answers -
Rapid evaporation
The minimum size sample for making strength test specimens is _____. - Answers -1
cubic foot
When sampling from a stationary mixer, the batch must be sampled at _____ or more
regularly spaced intervals during discharge of the middle portion of the batch. - Answers
-2
The composite sample for a paving mixer must represent a minimum of _____ different
portions of the batch of concrete taken from the pile after discharge. - Answers -5
, When sampling from a revolving drum truck mixer, concrete must be sampled at a
minimum of _____ regularly spaced intervals during discharge of the middle portion of
the batch. - Answers -2
Concrete samples from a truck mixer must be obtained before any water or admixtures
are added to the mixer at the job site. True or False? - Answers -False
The composite sample from a truck mixer must be obtained from the _____ portion of
the batch. - Answers -middle
When the concrete contains aggregate larger than that permitted for a particular test
method, the sample of concrete must be _____ _____ before making the test. -
Answers -wet sieved
What must occur before a sample of concrete can be taken from a revolving drum
mixer? (Oral Exam) - Answers -All of the water must be added to the mixer
Describe the different procedures that can be used to collect a sample of concrete from
a stationary or revolving drum mixer. (Oral Exam) - Answers -Repeatedly pass a
receptacle through the entire discharge stream, Completely divert the discharge stream
into a sample container
What are the required steps for collecting a sample of concrete from a stationary or
revolving drum mixer? (Oral Exam) - Answers -Collect two or more portions of concrete,
Take the portions at regularly spaced intervals, Take the portions from the middle of the
batch
Describe the procedure for collecting a sample of pavement concrete deposited on
grade. (Oral Exam) - Answers -Discharge the contents of the paving mixer, Obtain
samples from at least five different portions of the pile
What is the minimum size for a sample when strength test specimens are to be
molded? (Oral Exam) - Answers -1 cubic foot (28 L)
What is the maximum allowable time between obtaining the first and final portions of the
composite sample? (Oral Exam) - Answers -15 min.
How long must the temperature measuring device remain in the freshly mixed concrete?
- Answers -minimum of two minutes, maximum of five minutes
The temperature of the concrete is reported to the nearest ______ °F - Answers -1
degree
A maximum temperature of freshly mixed concrete is specified in ASTM C1064. True or
False? - Answers -False
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 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 GEEKA. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £10.20. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
76799 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now