UUS Practice Tests⌕ Search
Engineering Technician

NICET Construction Materials Testing Concrete Level III Exam Practice Test

Concrete materials testing examines how sampling, specimen preparation, and controlled measurements support evaluation of concrete in the laboratory and field. This Level III practice page covers concepts reflected in questions about fresh-concrete density, hardened-concrete strength, aggregate moisture, cement fineness, admixture function, and durability measurements. It also addresses the decisions technicians make when materials or samples do not match expected conditions.

Exam overview

Exam providerNational Institute for Certification in Engineering Technologies
Exam codeNot listed
CategoryEngineering Technician

About the NICET Construction Materials Testing Concrete Level III Exam

Sound test results depend on more than operating equipment: technicians must follow the specified method and edition, record relevant specimen details, and distinguish measured values from calculated properties. Practice scenarios address calculating unit weight from sample mass and measure volume, relating compressive failure load to specimen cross-sectional area, and expressing aggregate moisture relative to oven-dry mass. Other questions consider how cement sieve retention relates to fineness, how water-reducing admixtures affect mixtures, and how consistent conditioning and weighing support comparisons during durability exposure. Situations involving a mismatched cement identification or visible segregation test judgment about whether a sample or material is suitable for the intended procedure and what should be resolved before proceeding.

Sample Practice Questions

Review a selection from this exam's published US Practice Tests practice bank.

Question 1

A concrete laboratory receives a cement shipment with a different product identification from the material listed on the approved submittal. What should the technician do before using it in a test mixture?

  1. AHold the material for identification and authorization before use
  2. BUse it if its color resembles the approved cement
  3. CBlend it with the approved cement to make the products equivalent
  4. DUse it only in specimens intended for early-age testing
Show answerCorrect answer: A

Material identity and approval should be verified before use because different cement products may have different properties or requirements. Holding the material and seeking authorization preserves traceability and prevents an undocumented substitution.

Question 2

When comparing laboratory test results with a project acceptance requirement, why should the technician verify the specified test method and edition?

  1. ADifferent methods or editions can prescribe different procedures, calculations, or reporting requirements
  2. BThe test method determines the concrete's original batch size
  3. CThe edition number changes the measured specimen mass automatically
  4. DAny method using the same instrument produces interchangeable results
Show answerCorrect answer: A

Test methods define how specimens are prepared, tested, calculated, and reported. Confirming the applicable method and edition helps ensure the result is evaluated on the basis required by the project and is comparable to the specified criteria.

Question 3

For a drilled concrete core, why is the drilling direction and orientation often recorded?

  1. AIt allows the laboratory to calculate the cement content directly
  2. BConcrete properties can vary with placement direction, and orientation may matter when interpreting the result
  3. CIt determines the concrete's air content without additional testing
  4. DIt replaces the need to measure the core dimensions
Show answerCorrect answer: B

Concrete can exhibit direction-dependent characteristics because of placement, consolidation, and layering. Recording core orientation provides useful context for evaluating and comparing strength results and helps preserve traceability.

Question 4

A laboratory is comparing the mass change of concrete specimens during a durability exposure. Which practice is most important for making the mass measurements comparable over time?

  1. AUse the same defined specimen-conditioning and weighing procedure at each measurement
  2. BWeigh each specimen immediately after rinsing, regardless of surface moisture
  3. CUse a different balance for every measurement
  4. DRecord only the largest measured mass
Show answerCorrect answer: A

Consistent conditioning and weighing procedures help ensure that observed mass changes reflect the exposure rather than differences in surface moisture or measurement technique. The applicable procedure should define how specimens are prepared before weighing.

Question 5

A technician is determining the density (unit weight) of fresh concrete using a calibrated measure. Which value is needed to calculate the concrete density?

  1. AThe mass of the empty measure divided by its outside dimensions.
  2. BThe net mass of concrete in the measure divided by the calibrated volume of the measure.
  3. CThe gross mass of concrete and measure divided by the measure's height.
  4. DThe mass of concrete in the measure multiplied by the air-content percentage.
Show answerCorrect answer: B

Fresh-concrete density is calculated from the net mass of the concrete sample divided by the known calibrated volume of the measuring container. The container mass must therefore be accounted for separately from the gross mass.

Question 6

A hardened concrete specimen is tested for compressive strength, and the load and measured dimensions are recorded. Which quantity is used to calculate its compressive stress at failure?

  1. AMaximum applied load divided by the loaded cross-sectional area
  2. BMaximum applied load multiplied by specimen length
  3. CSpecimen mass divided by its volume
  4. DMaximum applied load divided by the specimen's curved surface area
Show answerCorrect answer: A

Compressive stress is calculated as the maximum load carried by the specimen divided by the area of the loaded cross section. Consistent units are needed for a meaningful result.

Question 7

A technician is determining the moisture content of a fine aggregate sample by drying it to constant mass. Which calculation expresses moisture content as a percentage of the oven-dry aggregate mass?

  1. A(Wet mass − oven-dry mass) ÷ oven-dry mass × 100
  2. B(Wet mass − oven-dry mass) ÷ wet mass × 100
  3. COven-dry mass ÷ wet mass × 100
  4. DWet mass ÷ (wet mass − oven-dry mass) × 100
Show answerCorrect answer: A

Aggregate moisture content on an oven-dry basis is the mass of water divided by the oven-dry aggregate mass, multiplied by 100. This basis is commonly used in aggregate and batch calculations.

How to use this practice test

The free practice bank contains 50 questions; a session presents up to 20 randomly selected questions. Complete a session, then use the displayed results to identify concepts needing closer review, such as calculation setup, specimen records, or responses to irregular samples. Repeat sessions to encounter different questions.

Preparation tips

  • Practice calculating fresh-concrete density from net sample mass and the calibrated measure’s volume; keep mass and volume units consistent.
  • For compressive-strength problems, identify the loaded cross-sectional area from specimen dimensions before dividing failure load by area.
  • Work through aggregate moisture calculations using oven-dry mass as the reference denominator, and distinguish wet sample mass from dry mass.
  • Review how consistent specimen conditioning, drying, and weighing make durability-related mass comparisons meaningful.
  • For scenarios involving mismatched material identification or visible segregation, determine what must be documented or resolved before testing proceeds.
Official sourceOfficial exam page ↗