Practice Test Geeks(NETTCP) New England Transportation Technician Certification Program Practice Test
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Quality Control Flashcards

7 cards from real NETTCP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Quality Control flashcards as text

  1. Under NETTCP quality control protocols, what action should a technician take if a concrete air content test result falls outside the specified range?

    Answer: Immediately notify the inspector and document the result before any concrete is placed

    Out-of-specification results must be immediately reported and documented so the inspector can make an informed disposition decision before placement proceeds.

  2. What is the primary reason aggregate used in asphalt mixtures must meet flat and elongated particle limits?

    Answer: Flat and elongated particles are prone to breaking under compaction and traffic loads

    Flat and elongated particles have high aspect ratios that make them susceptible to fracturing during mixing, compaction, and under repeated traffic loading.

  3. What is the purpose of the Hamburg Wheel Track test for asphalt mixtures?

    Answer: To evaluate rutting resistance and moisture susceptibility simultaneously

    The Hamburg Wheel Track test subjects submerged HMA specimens to a steel wheel to simultaneously evaluate rutting resistance and stripping potential.

  4. A split sample is sent to both the contractor's QC lab and the agency's QA lab. The results differ significantly. What is the correct protocol?

    Answer: Request referee testing from an independent accredited laboratory

    When split sample results conflict significantly, referee testing by an independent, accredited laboratory is the accepted protocol for resolving disputes.

  5. What does the term 'lot' mean in the context of highway construction quality control?

    Answer: A defined quantity of material or area of work used as the basis for acceptance testing

    A lot is a specified quantity of material (by tonnage, area, or volume) or a defined work unit upon which statistical acceptance decisions are based.

  6. Which condition would cause a QC technician to suspend concrete sampling operations at a bridge deck pour?

    Answer: Ambient air temperature drops below 40°F and no cold weather protection plan is in place

    Concrete placement must stop or cold weather protection measures must be in place when temperatures fall below 40°F because hydration slows dramatically and freezing can damage fresh concrete.

  7. What is the maximum allowable time between water addition and completion of discharge for a ready-mix concrete truck, per ASTM C 94?

    Answer: 90 minutes or 300 drum revolutions, whichever comes first

    ASTM C 94 limits ready-mix concrete delivery to 90 minutes or 300 revolutions of the drum after introduction of water, whichever occurs first.