CCIL Asphalt Mix Compliance Testing 4

Question 1

Which test is used to measure the fracture energy of asphalt mixtures at intermediate temperatures to characterize fatigue cracking resistance?

Accepted Answer

Semi-Circular Bend (SCB) Test

Answer

Hamburg Wheel-Track Test

Answer

Cantabro Loss Test

Answer

Dynamic Modulus Test

Question 2

In volumetric mix design, Voids Filled with Asphalt (VFA) is calculated using which two parameters?

Accepted Answer

VMA and Va

Answer

Va and Gmm

Answer

Gsb and Gse

Answer

Gmb and Gmm

Question 3

Under CCIL's accreditation scope, labs performing AASHTO T 324 (Hamburg Wheel-Track) must demonstrate proficiency with a maximum rut depth limit at 20,000 passes for most mixes of:

Accepted Answer

12 mm

Answer

6 mm

Answer

10 mm

Answer

20 mm

Question 4

What is the significance of the 'inflection point' observed in a Hamburg Wheel-Track rut depth versus load cycles plot?

Accepted Answer

It indicates the transition from consolidation to stripping failure

Answer

It marks the onset of aggregate breakdown

Answer

It represents the maximum binder content

Answer

It shows the start of plastic deformation

Question 5

Which aggregate property test measures the resistance of coarse aggregate to degradation by abrasion and impact using the Los Angeles machine?

Accepted Answer

AASHTO T 96

Answer

AASHTO T 304

Answer

AASHTO T 176

Answer

AASHTO T 335

Question 6

When sampling hot mix asphalt from a truck or windrow for acceptance testing, which standard provides the correct procedure?

Accepted Answer

AASHTO T 168

Answer

AASHTO T 40

Answer

ASTM D979

Answer

AASHTO T 2

Question 7

For a mix with Nominal Maximum Aggregate Size (NMAS) of 19.0 mm, the minimum VMA requirement per Superpave is:

Accepted Answer

14%

Answer

13%

Answer

15%

Answer

16%