UltraTech Cement Technical Support Engineer Interview Questions and Answers

The specification of cement, sand, and aggregate refers to the ratio of these materials used in concrete mixtures.

• The specification is usually expressed as a ratio of the materials used in the mixture.

• For example, a common specification for concrete is 1:2:3, which means one part cement, two parts sand, and three parts aggregate.

• The specification can vary depending on the intended use of the concrete, such as for found...read more

Various tests are conducted to ensure the quality of cement and concrete.

• Compressive strength test

• Water absorption test

• Setting time test

• Soundness test

• Fineness test

• Chemical analysis test

• Bulk density test

• Air content test

• Slump test

• Flexural strength test

Soundness of cement refers to its ability to resist volume changes after setting.

• Soundness is important for durability and strength of concrete structures.

• It is measured by the Le-Chatelier test or the Autoclave test.

• If the cement expands or contracts excessively, it can cause cracking and weaken the structure.

• Factors affecting soundness include the composition of raw materials, fineness of grinding, and curing conditi

Testing of cement involves various physical and chemical tests to ensure its quality and strength.

• The compressive strength test is the most common test for cement.

• Setting time test is done to determine the time taken by cement to set.

• Soundness test is done to check the stability of cement against volume changes.

• Fineness test is done to measure the particle size of cement.

• Chemical analysis is done to check the chemical ...read more

Spectrum shows frequency content while timewave shows time-domain waveform.

• Spectrum displays frequency content of a signal while timewave shows the time-domain waveform.

• Spectrum is useful for identifying specific frequencies while timewave is useful for identifying changes over time.

• Spectrum is represented as a graph with frequency on the x-axis and amplitude on the y-axis while timewave is represented as a graph with ...read more

Bearings and gears are mechanical components used in mills for various purposes.

• Bearings are used to support rotating shafts and reduce friction.

• There are different types of bearings such as ball bearings, roller bearings, and plain bearings.

• Ball bearings are commonly used in mills due to their high load capacity and low friction.

• Roller bearings are suitable for heavy loads and high-speed applications.

• Plain bearings, a...read more