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CTM 375 Questions and Correct Answers/
Latest Update / Already Graded
what does ctm 375 describe?
Ans: determining the average in-place density and relative
compaction of HMA
minimum lift thickness for HMA?
Ans: 0.10ft (1.2")
minimum test strip dementions?
Ans: at least 600 ft long, one traffic lane wide
what do you do if you cant find a test strip long enough?
Ans: reduce the test strip length or combine broken segments
to achieve 600 ft
minimum amount of tests on the test strip?
Ans: 10 test sites
how mant sets of cores are to be taken?
All rights reserved © 2025/ 2026 |
, Page |2
Ans: 1 set of two cores (4"-6" diameter)
where are the cores taken from?
Ans: from within the outlined test position of the nuke gage for
each of the test sites.
what do you do if the cores are damaged?
Ans: discard and replaced by additional cores from the same
test site
what if avg core density does not agree within 0.05 g/cc?
Ans: exclude all the data from this site.
how to Determine the correlation value for each test site
Ans: subtract the average nuclear density from the average
core density for the site.
what If any correlation value varies from the average correlation value
by more than two standard deviations at the 95 % confidence level?
Ans: consider this correlation value statistically invalid and
exclude it from the data
All rights reserved © 2025/ 2026 |
CTM 375 Questions and Correct Answers/
Latest Update / Already Graded
what does ctm 375 describe?
Ans: determining the average in-place density and relative
compaction of HMA
minimum lift thickness for HMA?
Ans: 0.10ft (1.2")
minimum test strip dementions?
Ans: at least 600 ft long, one traffic lane wide
what do you do if you cant find a test strip long enough?
Ans: reduce the test strip length or combine broken segments
to achieve 600 ft
minimum amount of tests on the test strip?
Ans: 10 test sites
how mant sets of cores are to be taken?
All rights reserved © 2025/ 2026 |
, Page |2
Ans: 1 set of two cores (4"-6" diameter)
where are the cores taken from?
Ans: from within the outlined test position of the nuke gage for
each of the test sites.
what do you do if the cores are damaged?
Ans: discard and replaced by additional cores from the same
test site
what if avg core density does not agree within 0.05 g/cc?
Ans: exclude all the data from this site.
how to Determine the correlation value for each test site
Ans: subtract the average nuclear density from the average
core density for the site.
what If any correlation value varies from the average correlation value
by more than two standard deviations at the 95 % confidence level?
Ans: consider this correlation value statistically invalid and
exclude it from the data
All rights reserved © 2025/ 2026 |
