Sobha Engineering Contracting Deputy General Manager Project Interview Questions and Answers

Initial setting time is the time when the concrete starts to harden, while final setting time is when it is completely hardened.

• Initial setting time typically ranges from 30 minutes to 1.5 hours.

• Final setting time is usually around 6 to 10 hours.

• Factors affecting setting time include temperature, cement type, water-cement ratio, and admixtures.

• Example: A rapid-setting concrete may have an initial setting time of 5 minu

Specific gravity of coarse aggregate is typically between 2.6 to 2.9.

• Specific gravity is the ratio of the weight of a given volume of aggregate to the weight of an equal volume of water.

• It is an important parameter in concrete mix design as it helps in determining the weight of aggregate required for a given volume of concrete.

• The specific gravity of coarse aggregate used in concrete typically ranges from 2.6 to 2.9.

• Hi...read more

The consumption of bricks per cubic meter of masonry wall varies depending on the type of bricks and the thickness of the wall.

• The consumption of bricks for a solid brick wall will be different from a cavity wall.

• The size and type of bricks used will also impact the consumption rate.

• Generally, for solid brick walls, the consumption can range from 500 to 700 bricks per cubic meter.

• For cavity walls, the consumption can b...read more