Chettinad Cements Technical Service Engineer Interview Questions and Answers

Test based on basic Mining knowledge

Q1. Interview questions based on Blasting process and new technology.
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Q1. What is the need of Technical service engineer
Ans. 
Technical service engineers are needed to provide technical support, troubleshoot issues, and ensure customer satisfaction.
• Provide technical support to customers

• Troubleshoot and resolve technical issues

• Ensure customer satisfaction with products or services

• Conduct product demonstrations and training for customers

• Collaborate with sales and engineering teams to improve products or services
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Q2. What is cement ratio
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Cement ratio refers to the ratio of cement to other materials in a concrete mixture.
• Cement ratio is the proportion of cement used in a concrete mix compared to other materials like sand, aggregate, and water.

• It is typically expressed as a ratio, such as 1:2:4, which means 1 part cement, 2 parts sand, and 4 parts aggregate.

• The cement ratio can vary depending on the strength and durability requirements of the concrete be
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Q1. What are the types of cement available in the market?
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Types of cement include Portland cement, white cement, rapid hardening cement, low heat cement, sulfate resisting cement, etc.
• Portland cement is the most common type used in construction

• White cement is used for architectural purposes

• Rapid hardening cement sets quickly

• Low heat cement generates less heat during hydration

• Sulfate resisting cement is used in areas with high sulfate content in soil or water
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Q2. What are the Tests on fresh concrete and hardened concrete ?
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Tests on fresh concrete include slump test, air content test, and temperature test. Tests on hardened concrete include compressive strength test, flexural strength test, and durability test.
• Tests on fresh concrete: slump test, air content test, temperature test

• Tests on hardened concrete: compressive strength test, flexural strength test, durability test
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Q3. What are the main reason for cracks development in slab?
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The main reasons for cracks development in slabs include shrinkage, settlement, overloading, and poor construction practices.
• Shrinkage of concrete during curing process

• Settlement of underlying soil

• Overloading beyond the design capacity

• Poor construction practices such as inadequate reinforcement or improper curing

• Temperature changes causing expansion and contraction
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Q4. How do you test cement on site?
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Cement can be tested on site using various methods such as slump test, compressive strength test, and temperature monitoring.
• Perform a slump test to measure the consistency and workability of the cement mixture.

• Conduct a compressive strength test by casting cubes or cylinders of cement and testing their strength after a specified curing period.

• Monitor the temperature of the cement during mixing and curing to ensure pro
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Q5. What are the IS Codes for different types of cement?
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IS Codes for different types of cement
• IS 269: Ordinary Portland Cement

• IS 455: Portland Slag Cement

• IS 1489: Portland Pozzolana Cement

• IS 8041: Rapid Hardening Portland Cement

• IS 12330: Sulphate Resisting Portland Cement
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Q6. How do you calculate the target strength of concrete?
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The target strength of concrete is calculated using the characteristic compressive strength of concrete and the standard deviation.
• Calculate the characteristic compressive strength of concrete based on the mix design.

• Determine the standard deviation of the concrete mix.

• Use the formula: Target strength = Characteristic strength + (1.65 * Standard deviation)

• For example, if the characteristic strength is 30 MPa and the st...read more
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