Nagarjuna Construction Company Junior Engineer Civil Interview Questions and Answers

Water cement ratio is the ratio of the weight of water to the weight of cement used in a concrete mix.

• It is an important factor in determining the strength and durability of concrete.

• A lower water cement ratio results in stronger and more durable concrete.

• The ideal water cement ratio varies depending on the type of concrete and its intended use.

• For example, a water cement ratio of 0.45 is recommended for concrete used in bridges and other structures exposed to harsh weather c...read more

PH value is not applicable to weather as it is a measure of acidity or alkalinity of a solution.

• PH value is a measure of the concentration of hydrogen ions in a solution.

• It is used to determine the acidity or alkalinity of a solution on a scale of 0 to 14.

• Weather does not have a PH value as it is not a solution.

• However, PH value can be affected by weather conditions such as acid rain.

Unit weight of 1m³ steel?

• The unit weight of steel varies depending on its type and grade

• The density of mild steel is around 7850 kg/m³

• The density of stainless steel is around 7480 kg/m³

• The density of high carbon steel is around 7850 kg/m³

• The density of low carbon steel is around 7700 kg/m³

Unit weight of 1m³ cement?

• Unit weight of cement varies from 1440 to 1840 kg/m³ depending on the type of cement used.

• The most commonly used cement, Portland cement, has a unit weight of 1506 kg/m³.

• Unit weight is important in determining the amount of cement required for a project.

Volume of a bag of cement?

• A standard bag of cement weighs 50 kg

• The volume of a bag of cement depends on its density

• Assuming a density of 1440 kg/m³, the volume of a bag of cement is 0.0347 m³

M-20 and M-25 are concrete mix ratios used in construction.

• M-20 concrete mix ratio is 1:1.5:3 (cement:sand:aggregate)

• M-25 concrete mix ratio is 1:1:2 (cement:sand:aggregate)

• The strength of concrete increases with the increase in the mix ratio

• M-20 is generally used for non-structural works while M-25 is used for structural works