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CT 125 Questions and Correct Answers/
Latest Update / Already Graded
What is the CT 125 test method used for?
Ans: Procedures for obtaining representative samples of
various highway materials & products incorporated in roadway
pavement structure sections
Minimum number of splitter chutes
Ans: For coarse aggregate - minimum of 8; fine agg - minimum
of 12;
What is t minimum width of individual chutes for sample splitters
Ans: Chutes shall be approx 50% larger than the largest
particle size
What is the minimum sample size that should be obtained?
Ans: Enough to perform the specific tests needed.
A representative sample is defined as:
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Ans: The taking of all materials in the same proportion as they
exist or will be used.
What size canvas is used to split samples in the field?
Ans: 5 ft x5ft
How many sizes of splitters are there?
Ans: 3 - small, medium, large
When drying a sample And air drying is not practical, what temp can
material be heated at?
Ans: 140 defrees
When is drying at 230 degrees permitted?
Ans: When all subsequent tests require or permit drying at 230
degrees
When combining samples, what is the preferred method?
Ans: A riffle splitter
All rights reserved © 2025/ 2026 |
CT 125 Questions and Correct Answers/
Latest Update / Already Graded
What is the CT 125 test method used for?
Ans: Procedures for obtaining representative samples of
various highway materials & products incorporated in roadway
pavement structure sections
Minimum number of splitter chutes
Ans: For coarse aggregate - minimum of 8; fine agg - minimum
of 12;
What is t minimum width of individual chutes for sample splitters
Ans: Chutes shall be approx 50% larger than the largest
particle size
What is the minimum sample size that should be obtained?
Ans: Enough to perform the specific tests needed.
A representative sample is defined as:
All rights reserved © 2025/ 2026 |
, Page |2
Ans: The taking of all materials in the same proportion as they
exist or will be used.
What size canvas is used to split samples in the field?
Ans: 5 ft x5ft
How many sizes of splitters are there?
Ans: 3 - small, medium, large
When drying a sample And air drying is not practical, what temp can
material be heated at?
Ans: 140 defrees
When is drying at 230 degrees permitted?
Ans: When all subsequent tests require or permit drying at 230
degrees
When combining samples, what is the preferred method?
Ans: A riffle splitter
All rights reserved © 2025/ 2026 |
