UltraTech Cement Assistant Chemist Interview Questions and Answers for Freshers

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Q1. What is the concrete ?
Ans. 
Concrete is a mixture of cement, sand, gravel, and water used for construction.
• Concrete is a strong and durable material used in construction.

• It is made by mixing cement, sand, gravel, and water in specific proportions.

• The mixture hardens over time and becomes a solid mass.

• Concrete is used for building foundations, walls, floors, and roads.

• It can also be used for decorative purposes, such as in stamped concrete or poli
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Q2. How to control the bleeding of concrete?
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Bleeding of concrete can be controlled by reducing the water content, using proper mix design, and avoiding overworking the concrete.
• Reduce water content to prevent excess bleeding

• Use proper mix design with appropriate aggregate size and type

• Avoid overworking the concrete, which can cause excess bleeding

• Use admixtures such as air-entraining agents or viscosity-modifying agents

• Use proper curing techniques to prevent sur...read more
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Q1. Cement, Tests, curing, grades, Tools
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Q2. Types, mixture, proportion
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Q3. RMC, Standard Consistency
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Q1. Question on raw materials testing process
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Q2. Cement contents of different grades
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Cement contents vary for different grades of cement.
• Cement is graded based on its compressive strength at 28 days.

• The most commonly used grades are 33, 43, and 53.

• The cement content for each grade depends on the type of cement used.

• For example, for OPC (Ordinary Portland Cement), the cement content for grade 33 is 220 kg/m3, for grade 43 it is 300 kg/m3, and for grade 53 it is 350 kg/m3.
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