Dalmia Bharat Group Executive Engineer Interview Questions and Answers

Cements are binding materials used in construction, with various types tailored for specific applications and properties.

• Ordinary Portland Cement (OPC): Most commonly used for general construction.

• Portland Pozzolana Cement (PPC): Contains pozzolanic materials, enhancing durability.

• Rapid Hardening Cement: Gains strength quickly, ideal for fast-track projects.

• Sulphate Resisting Cement: Used in environments with high sulp...read more

Cement tests assess quality and properties of cement, ensuring it meets standards for construction use.

• Fineness Test: Determines the particle size of cement; finer cement hydrates faster.

• Setting Time Test: Measures the time taken for cement to set; important for workability.

• Compressive Strength Test: Assesses the strength of cement by testing hardened samples.

• Soundness Test: Checks for expansion and contraction of ceme...read more

Mix design of concrete refers to the process of determining the proportions of various ingredients to achieve the desired properties of concrete.

• Mix design involves selecting the appropriate type and amount of cement, aggregates, water, and admixtures.

• The proportions are determined based on factors such as strength requirements, workability, durability, and environmental conditions.

• Various methods like the ACI method, ...read more

The grade of concrete and ratio of cement are important factors in construction.

• The grade of concrete determines its strength and durability.

• The ratio of cement to other materials affects the workability and strength of the concrete.

• Common grades of concrete include M10, M20, M30, and M40.

• The ratio of cement to sand to aggregate can vary depending on the desired strength and workability of the concrete.

• A common ratio f...read more

There are mainly 5 types of cement processes.

• Dry process

• Wet process

• Semi-dry process

• Semi-wet process

• Lepol process