CCIL Asphalt Mix Compliance Testing 2

Question 1

Which AASHTO standard governs the determination of the maximum specific gravity of asphalt mixtures (Gmm)?

Accepted Answer

AASHTO T 209

Answer

AASHTO T 209 is the standard test method for maximum specific gravity and density of hot mix asphalt paving mixtures.

Question 2

What is the primary purpose of the Hamburg Wheel-Track Test in asphalt mix compliance?

Accepted Answer

Evaluate rutting and moisture susceptibility

Answer

The Hamburg Wheel-Track Test simultaneously evaluates rutting resistance and moisture susceptibility of asphalt mixtures.

Question 3

When calculating Voids in the Mineral Aggregate (VMA), which bulk specific gravity value is used for the aggregate?

Accepted Answer

Bulk specific gravity (Gsb)

Answer

VMA calculations use the bulk specific gravity (Gsb) of the aggregate, as specified in the Superpave mix design method.

Question 4

In the context of CCIL accreditation for asphalt testing, which parameter defines the acceptable range of air voids for Superpave design traffic levels?

Accepted Answer

4% at design gyrations

Answer

Superpave mix design targets 4% air voids at the design number of gyrations (Ndesign) for all traffic levels.

Question 5

Which test method is used to determine the asphalt binder content by ignition in compliance testing?

Accepted Answer

Both AASHTO T 308 and ASTM D6307

Answer

Both AASHTO T 308 and ASTM D6307 describe the ignition oven method for determining binder content of asphalt mixtures.

CCIL - Canadian Council of Independent Laboratories Practice Test

CCIL - Canadian Council of Independent Laboratories Practice Test

CCIL Asphalt Mix Compliance Testing 2