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ACI Concrete Testing - Grade 1 with complete verified solutions 2025(already passed).
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ACI Concrete Testing - Grade 1 with complete verified solutions 2025(already passed).
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ACI Concrete Testing -Grade 1 with complete
verified solutions
2025(already passed)
Performance Checklist for Temperature Step 1: - answer Submerge
Temp measuring device 3in
Performance Checklist for Temperature Step 2: - answer Press
concrete around Temp measuring device
Performance Checklist for Temperature Step 3: - answer Leave the
Temp measuring device for at least 2 min., but less than 5min.
Performance Checklist for Temperature Step 4: - answer Read and
record temp to the nearest .5degrees Celsius or 1 degree F, do not
remove Temp measuring device
Performance Checklist for Temperature Step 5: - answer Report
measured temp
What must occur before a sample of concrete can be taken from a
revolving drum mixer? (Sampling) - answer All water and
admixture must be added to the mixer
, When sampling from a stationary or revolving drum mixer, what is
collected and when is it taken during discharge? (Sampling) -
answer - In two or more portions of concrete
- At regularly spaced intervals
- From the middle of the batch
How are the sample portions obtained from the discharge stream of
a stationary or revolving drum mixer? (Sampling) - answer -
Repeatedly pass a receptacle through the entire discharge stream
- Completely divert the discharge stream into a sample container
Describe the procedure for collecting a sample from a paving mixer
(Sampling) - answer - Discharge the contents of the paving mixer
- Obtain samples from at least five different portions of the pile
Sample container must always be??? - answer Dampened
What is the minimum size for a sample when strength test
specimens are to be molded? (Sampling) - answer 28 L
What is the maximum allowable time between obtaining the first
and final portions of the composite sample? (Sampling) - answer 15
Min.
What action is required after the individual concrete samples have
been transported to the place where tests are to be performed?
(Sampling) - answer Combine and remix the samples with a shovel
What should be done if the concrete contains aggregate larger than
is appropriate for the size of the molds or equipment being used?
(Sampling) - answer Wet Sieving
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