GAT Subject Engineering MCQs

Segregation produces a nonuniform concrete mixture.
It may result from poor proportioning, excessive vibration, or improper handling.

Bleeding occurs as solid particles settle and water rises.
Excessive bleeding can weaken the surface and bond.

Aggregates usually form the largest volume fraction of concrete.
They reduce cost and influence strength, shrinkage, and workability.

A foundation spreads building loads to soil or rock.
It must limit bearing failure and excessive settlement.

Shallow foundations transfer loads at relatively small depths.
Examples include isolated, strip, and raft foundations.

Concrete is primarily designed to carry compressive loads.
Its compressive strength is commonly measured using cube or cylinder tests.

Concrete is strong in compression but weak in tension.
Steel reinforcement carries the tensile force after concrete cracks.

Cement and water react to form hardened cement paste.
The paste binds fine and coarse aggregates into concrete.

Excess water increases porosity after hardening.
A lower suitable water-cement ratio generally improves strength and durability.

Workability describes how easily fresh concrete can be handled without segregation.
Slump and compaction-factor tests are used to assess it.