MANUAL REVIEWER 6 Flashcards
What will you do when the aggregate sample material such as base course passed the requirements of quality tests except for Grading?
A. Obtain another set from a different source
B. Reject the material and the source
C. Just accept the material, its just grading only
D. Process again the aggregate material by blending
D
During asphalting work, shat will you do when you found out that bituminous mixture delivered at the project site is 50 deg C lower than the required compaction temperature of the job mix formula
A. Adjust the job-mix formula
B. Reject the material
C. Accept and continue the work
D. Spread and compact the mix at a thin layer
B
Since Philippines is a tropical country (Hot Climate) what penetration grade or hard asphalt will you use?
A. Low Penetration Grade
B. High Penetration Grade
C. Moderate Penetration Grade
D. Depends on the availability
A
As an ME, how can you improve the properties of soil by not spending too much?
A. Doing stabilization on the soil
B. Doing more compaction
C. Minimizing permeability
D. Provide soil chemical additives
A
During testing, it was found that out of 3 PCCP concrete specimens, 1 failed by more than 27% of the specified f’c. As ME of the contractor side, what are you going to do?
A. Pay the laboratory technician
B. Get the average of the 3 test results and if the average is equal or higher than the f’c, conclude that the set passed
C. Conclude that the set failed and conduct coring
C
As ME, where can you obtain the permit for the procurement of the chemicals to be used for laboratory testing such as sodium hexametaphosphate?
A. NBI
B. PDEA
C. LTO
D. BFAD
B
As ME of the contractor handling DPWH projects, are you allowed to perform testing on the LGU Testing Laboratories?
A. Yes, of course!
B. No
C. Yes, I’ll just pay the DPWH team
D. Maybe
B
During spreading and compacting of aggregate base course, only 85% of the density was attained after compaction. What are you going to do?
A. Provide additional binder
B. Use vibratory roller with higher compactive effort
C. Do the watering and compact again
D. All of the above
B
What is the closest reason why failed samples do not necessarily mean that the structure it represents is defective?
A. Sampling is incorrect
B. Curing is incorrect
C. Testing is incorrect
D. All of the above
A
As ME, what do you think is/are the significance of quantitative extraction of bitumen from bituminous paving mixtures?
A. To determine the asphalt content
B. To determine gradation of aggregates
C. To determine the composite of aggregates
D. Both A and B
D
There is a certain project that is impractical for testing the pipe itself since the place is secluded, what testing are you going to require for the pipe instead?
A. Concrete beam samples
B. Concrete cylinder samples
C. Mill certificate
D. Waiver
B
In a trial batch, a sample was taken for extraction test, however, the bitumen content failed to comply with the specifications. As ME, what should be your recommendations?
A. Add more asphalt
B. Add more bitumen
C. Redesign and conduct retrial
D. Outright decision and continue
C
What is the proper way of transporting core / concrete samples to the laboratory for testing?
A. Samples are in a crate with saw dust and rice straw or even sand the least
B. Samples are in a crate, immovable
C. Samples are placed in a sack
D. None of these
A
If sample splitter is not available for use in reducing samples for testing, as ME, what is the alternative way of reducing sample for testing size for course aggregates?
A. Apply quartering method and get two adjacent sides as samples
B. Apply quartering method and get two opposite sides as samples
C. Obtain samples at the mid, top, and bottom
D. All of the above
B
The concrete mixtures were not yet discharged for 1 hour and 45 minutes. AS ME, what are you going to do?
A. Add more water to the mixer and mix properly until desired mix is obtained
B. Discard the mix
C. Remix properly the mix
D. Chill, it is okay!
B
