Concrete Fr

Curing in concrete is required to expel the entrapped air (air bubbles) of fresh concrete

• True

• False

Curing minimize shrinkage

• True

• False

What is the Purpose of Superplasticizer?

• To reduce shrinkage

• To improve density

• To improve workability

• To reduce setting time

The purpose of concrete compaction is to achieve high density

• True

• False

Concrete strength is inversely proportional to water/cement ratio

• True

• False

Concrete...

• Is Fire Resistant

• Has Good Compressive strength

• Require Minimal maintenance

• All the above

Thermal mass is the ability of a material to absorb heat energy

• True

• False

Concrete has low thermal mass

• True

• False

Why steel bars with ribs are preferred compared to bars without ribs?

• Due to better workability

• Due to better strength

• Due to better bond with concrete

• Due to reduced shrinkage

Why steel is required in Concrete ?

• Due to low compressive strength of concrete

• Due to low Tensile strength of concrete

• Due to shrinkage

• To improve workability