R&C Infra Engineers Interview Questions, Process, and Tips

Concrete is a mixture of cement, water, and aggregates. Quality concrete requires proper proportioning, mixing, and curing.

• Cement, water, and aggregates are the three main components of concrete.

• The proportion of each component should be carefully calculated to achieve the desired strength and durability.

• Mixing should be done thoroughly to ensure uniformity of the mixture.

• Curing is a critical step in the process, as it...read more

Cement is a binding material used in construction. It is made by heating limestone and clay in a kiln and then grinding it into a fine powder.

• Cement is made by combining limestone and clay in a kiln at high temperatures

• The resulting clinker is then ground into a fine powder

• Different types of cement include Portland cement, slag cement, and pozzolanic cement

• Portland cement is the most commonly used type of cement in con

There are different grades of concrete based on its strength and durability.

• The most commonly used grades of concrete are M10, M15, M20, M25, M30, M35, M40, M45, M50, M55, and M60.

• The number in the grade of concrete represents its compressive strength in megapascals (MPa) after 28 days of curing.

• For example, M20 grade of concrete means it has a compressive strength of 20 MPa after 28 days of curing.

• Higher grade of conc...read more

There are three grades of steel - mild steel, medium carbon steel, and high carbon steel.

• Mild steel has a low carbon content and is easy to work with, but not very strong.

• Medium carbon steel has a higher carbon content and is stronger than mild steel.

• High carbon steel has the highest carbon content and is the strongest, but also the most brittle.

• The grade of steel used in construction depends on the specific applicatio...read more