CPII Material Testing 2

Question 1

What does the Los Angeles Abrasion test measure for aggregates?

Accepted Answer

Resistance to degradation by abrasion and impact

Answer

The LA Abrasion test measures the resistance of coarse aggregate to degradation by abrasion and impact using a rotating steel drum with steel spheres.

Question 2

A concrete cylinder fails at 3,800 psi at 28 days when the specified strength is 4,000 psi. What is the appropriate inspector action?

Accepted Answer

Document the results and notify the engineer of record

Answer

The inspector must document the failing results and notify the engineer of record, who will determine if further investigation or remediation is required.

Question 3

Which ASTM standard governs the Standard Test Method for Penetration of Bituminous Materials?

Accepted Answer

ASTM D 5

Answer

ASTM D 5 is the standard test method for penetration of bituminous materials, measuring asphalt consistency by needle penetration depth.

Question 4

When testing soil for Proctor density, what does the term 'optimum moisture content' refer to?

Accepted Answer

The moisture content that achieves the maximum dry density

Answer

Optimum moisture content is the water content at which a given compactive effort produces the maximum dry unit weight of a soil.

Question 5

A Marshall stability test is primarily used to evaluate which type of construction material?

Accepted Answer

Hot mix asphalt pavement

Answer

The Marshall stability test evaluates the load-carrying capacity and flow characteristics of compacted hot mix asphalt specimens.

(CPII) Certified Public Infrastructure Inspector Practice Test

(CPII) Certified Public Infrastructure Inspector Practice Test

CPII Material Testing 2