Dalmia-OCL Interview Questions and Answers

There are several types of cement available in the market.

• Ordinary Portland Cement (OPC)

• Portland Pozzolana Cement (PPC)

• White Cement

• Rapid Hardening Cement

• Low Heat Cement

• Sulfate Resistant Cement

• Oil Well Cement

• Blast Furnace Slag Cement

• Air Entraining Cement

IS code for PSC cement is IS 455:1989

• IS 455:1989 is the Indian Standard code for Portland Slag Cement

• PSC cement is made by blending Portland cement clinker with granulated blast furnace slag

• It has high durability, strength, and resistance to chemical attacks

• PSC cement is commonly used in construction of dams, bridges, and marine structures

M25 is a concrete mix design ratio and properties refer to the characteristics of a material.

• M25 is a concrete mix design ratio that specifies the proportion of cement, sand, and aggregate.

• Properties of a material refer to its characteristics such as strength, durability, and workability.

• Concrete properties include compressive strength, tensile strength, and water absorption.

• Understanding the properties of a material is important for selecting the right material for a specifi...read more

Cement is made by heating limestone with small amounts of other materials.

• Raw materials are crushed and mixed in the correct proportions

• The mixture is heated in a kiln to around 1450 degrees Celsius

• The resulting material, called clinker, is ground into a fine powder

• Gypsum is added to the powder to regulate setting time

• The final product is cement, which is used in construction

PSC cement stands for Portland Slag Cement, a type of cement made by mixing slag and ordinary Portland cement.

• PSC cement is known for its high durability and strength.

• It is commonly used in construction projects such as bridges, dams, and buildings.

• The slag used in PSC cement is a byproduct of steel production.

• PSC cement has a lower heat of hydration compared to other types of cement, making it ideal for mass concrete structures.

• It is also more resistant to chemical attacks a...read more

Mix design is the process of determining the proportions of ingredients required to create a concrete mix with desired properties.

• Mix design involves selecting suitable materials and determining their proportions.

• Factors such as strength, workability, and durability are considered during mix design.

• The process involves testing and adjusting the mix until the desired properties are achieved.

• Examples of materials used in mix design include cement, water, aggregates, and admixtu...read more

Both price and quality are important for selling PSC. It depends on the target market and competition.

• Consider the target market and their purchasing behavior

• Analyze the competition and their pricing strategy

• Highlight the unique selling points of PSC, such as quality and affordability

• Offer promotions or discounts to attract price-sensitive customers

• Invest in marketing and advertising to create brand awareness and build trust