Highway Construction Materials Testing Flashcards
6 cards from real NICET practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Highway Construction Materials Testing flashcards as text
Which NICET certification covers technicians who test soils, aggregates, and concrete on highway construction projects?
Answer: Highway Construction Materials Testing (HCMT)
NICET's Highway Construction Materials Testing (HCMT) certification covers technicians who perform quality assurance testing of materials used on highway projects.
What test is used to determine the moisture-density relationship of compacted soil?
Answer: Proctor Compaction Test
The Proctor Compaction Test (AASHTO T 99 or T 180) determines the relationship between moisture content and dry density for soil compaction control.
What does a nuclear density gauge measure on a highway construction site?
Answer: In-place density and moisture content of soils and base materials
A nuclear density gauge uses gamma radiation and neutron emission to measure the in-place density and moisture content of compacted soils and base materials.
Which AASHTO standard governs the sieve analysis of fine and coarse aggregates?
Answer: AASHTO T 27
AASHTO T 27 is the standard method for sieve analysis of fine and coarse aggregates used in highway construction materials testing.
What is the purpose of the Los Angeles Abrasion Test?
Answer: Determine resistance of coarse aggregate to degradation by abrasion and impact
The LA Abrasion Test (AASHTO T 96) measures the percentage of wear in coarse aggregate subjected to abrasion and impact in a rotating steel drum.
In soil classification, what does the Plasticity Index (PI) indicate?
Answer: The range of moisture content over which the soil behaves plastically
The Plasticity Index is the numerical difference between the Liquid Limit and Plastic Limit, representing the moisture range over which soil exhibits plastic behavior.