FREE CCIL Asphalt and Aggregate Questions and Answers

Question 1

How many grab samples are typically required when testing for uniformity of samples?

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Question 2

How much time is typically allowed for obtaining, transporting, and remixing the sample?

Accepted Answer

10 minutes

Answer

5 minutes

Answer

15 minutes

Answer

20 minutes

Question 3

Which action is necessary when a sample contains aggregate larger than what is appropriate for the size of the moulds or equipment?

Accepted Answer

Sieve the sample to remove larger aggregates

Answer

Discard the sample and collect a new one

Answer

Crush the larger aggregates to smaller sizes

Answer

Proceed with testing without any adjustments

Question 4

What sieve size should cementing materials be passed through to remove lumps before use?

Accepted Answer

1.25mm

Answer

2.5mm

Answer

5.0mm

Answer

10.0mm

Question 5

What sample size is recommended for obtaining surface moisture in both fine and coarse aggregates?

Accepted Answer

500g-1000g

Answer

100g-200g

Answer

300g-500g

Answer

1000g-2000g

Question 6

What are the specifications for the tamping rod used for compacting 100mm x 200mm cylinders?

Accepted Answer

Diameter 10mm +/- 1mm, Length 450mm to 600mm

Answer

Diameter 5mm +/- 1mm, Length 300mm to 400mm

Answer

Diameter 15mm +/- 1mm, Length 700mm to 800mm

Answer

Diameter 20mm +/- 1mm, Length 800mm to 1000mm

Question 7

What are the specifications for the tamping rod used for compacting cylinders larger than 150mm or rectangular moulds?

Accepted Answer

Diameter 16mm +/- 1mm, Length 450mm to 600mm

Answer

Diameter 10mm +/- 1mm, Length 450mm to 600mm

Answer

Diameter 20mm +/- 1mm, Length 700mm to 800mm

Answer

Diameter 25mm +/- 1mm, Length 800mm to 1000mm

Question 8

What criterion should be followed for the size of specimens or aggregates?

Accepted Answer

Diameter of the specimen should be three times the size of the coarse aggregate used

Answer

Diameter of the specimen should be equal to the size of the coarse aggregate used

Answer

Diameter of the specimen should be half the size of the coarse aggregate used

Answer

Diameter of the specimen should be four times the size of the coarse aggregate used

Question 9

Which method can be employed to eliminate oversized aggregate particles before casting cylinders?

Accepted Answer

Handpicking

Answer

Mechanical sieving

Answer

Dry sieving

Answer

Wet sieving

Question 10

In the context of asphalt and aggregate testing, what procedure is followed for determining the slump of mixtures containing aggregate larger than 40mm?

Accepted Answer

Sieve the sample and conduct the slump test with the material passing through a 40mm sieve

Answer

Conduct the slump test directly on the mixture without any sieving

Answer

Sieve the sample and conduct the slump test with the entire material

Answer

Sieve the sample and conduct the slump test with the material passing through a 19mm sieve