Concrete MCQ Questions

What is concrete's ranking among the most used materials by humankind?

• First most used material

• Second most used material, after water

• Third most used material

• Fourth most used material

Which component in concrete acts as a filler material?

• Fine aggregates

• Water

• Cement

• Coarse aggregates

The chemical reaction between cement and water that leads to hardening is called:

• Carbonation

• Hydration

• Curing

• Setting

According to the document, what is the maximum accuracy required for batching aggregates, cement, and water?

• ±1% of batch quantity

• ±3% of batch quantity

• ±5% of batch quantity

• ±7% of batch quantity

Which batching method is recommended for major construction works?

• Volume batching

• Weight batching

• Manual batching

• Gauge box batching

What is the maximum time allowed for transporting concrete using trucks with agitators?

• 30 minutes

• 1 hour

• 2 hours

• 3 hours

The minimum curing period for concrete should be:

• 7 days

• 10 days

• 14 days

• 21 days

Which concrete state is described as "fluid and soft just after mixing"?

• Setting state

• Hardening state

• Plastic state

• Cured state

What property of fresh concrete is measured by the slump test?

• Strength

• Durability

• Workability

• Density

Which type of slump indicates good cohesion in the concrete mix?

• Collapsed slump

• Shear slump

• True slump

• False slump