Concrete Technology Practice Test 1

1. To determine the fineness of cement ____

Grain size is 1mm

Grain size is larger than specified mesh size

Grain size is smaller than specified mesh size

Grain size is equal to specified mesh size

2. Which cement is used for artificial marble?

Rapid Hardening Cement

Quick Setting Cement

Sulphate Resisting Cement

Coloured Cement

3. In the soundness test a specimen of hardened cement paste is ___ for a fixed time.

Freeze

Boiled

Dipped in water

Dry

4. What is hydration of cement?

Chemical reaction of cement with base

Chemical reaction of cement with acid

Chemical reaction of cement with salt, and acid

Chemical reaction of cement with water

5. Among the below statement, which one is correct for wet process?

The amount of heat required is high, so the required fuel amount is high

The amount of heat required is lesser, so the required fuel amount is less

The amount of heat required is high, so the required fuel amount is less

The amount of heat required is less, so the required fuel amount is high

6. Which compound may lead to a rapid stiffening of the paste with a large amount of the heat generation?

C₂S

C₃S

C₃A

C₄AF

7. Cement is a material with adhesive and cohesive properties.

True

False

8. The slurry, in its movement down the kiln, encounters a progressively higher temperature. At first, the water is driven off and ___ is liberated.

CaO

CO₂

Gypsum

SiO₂

9. How many moulds required for the compression strength test of cement?

10. What is the composition of making the Mortar?

P.C. + Water

P.C. + Water + Sand

Water + Sand + Gravel

P.C. + Water + Sand + Gravel