Chapter 2: Aggregate

Clay minerals are found in most _________

• Igneous Environment

• Sedimentary environment

• Metamorphic environment

• In all environment

Which machine is preferred for abrasion test?

• Vicat’s mould

• Los Angeles

• Flakiness Gauge

• Elongation Gauge

If 60% aggregates doesn’t pass through the 2.36mm sieve, then what would be the value of Aggregate impact value?

• 60%

• 40%

• 25%

• 100%

In crushing test, dry aggregates passing through ________ mm sieve and retained ________ mm in a cylinder.

• 12.5, 10

• 11.5, 10

• 12.5, 11.5

• 10, 2.36

What do you mean by bulking?

• The volume increase of fine aggregate due to presence of moisture content in it

• The moisture present in aggregate forms a film around each particle

• Fine aggregate shows completely realistic volume

• The state of setting someone or something apart from others

“Fine aggregate do not show any bulking when it is absolutely dry”. Is this statement true or false?

• True

• False

What is the percentage of bulk if fine aggregates manufactured by extremely fine sand?

• 20

• 30

• 40

• 50

Bulking ___________ with increase in moisture.

• Increase

• Decrease

• First increase then decrease

• First decrease then increase

Fine sand bulks __________ than coarse sand.

• Less

• More

• Equal

• Depends on volume

Natural aggregates comes in which category?

• Based on size

• Based on origin

• Based on density

• Based on shape