RDC Concrete (India) Interview Questions, Process, and Tips

Q1. Concrete ,Rcc, surveying
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Q2. What is concrete
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Concrete is a composite material made of cement, water, aggregates, and sometimes additives, used in construction for its strength and durability.
• Concrete is made by mixing cement, water, and aggregates like sand and gravel.

• It hardens over time through a chemical process called hydration.

• Concrete is used in construction for building foundations, roads, bridges, and more.

• Different types of concrete can be used based on ...read more
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Q3. Diffrerence b/w PCC AND RCC
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PCC stands for Plain Cement Concrete and is made of cement, sand, and aggregate. RCC stands for Reinforced Cement Concrete and has steel reinforcement added to increase strength.
• PCC is used for non-structural works like levelling, bedding for footing, etc.

• RCC is used for structural works like beams, columns, slabs, etc.

• RCC has higher strength and durability compared to PCC.

• PCC does not have any reinforcement, while RCC...read more
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Q4. Waht is contour
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Contours are imaginary lines that connect points of equal elevation on a map or surface.
• Contours are used in topographic maps to show the shape and elevation of the land.

• They help visualize the terrain and identify features such as hills, valleys, and slopes.

• Closer contour lines indicate steeper slopes, while widely spaced lines represent flatter areas.

• Contour lines never cross each other and form closed loops around h...read more
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Q5. What is reinforcement and what is the work of
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Reinforcement in civil engineering refers to the process of adding steel bars or mesh to concrete structures to increase their strength and durability.
• Reinforcement helps to resist tensile forces in concrete structures.

• Common types of reinforcement include rebar (steel bars) and wire mesh.

• Reinforcement is placed strategically within the concrete forms before pouring the concrete.

• Properly placed reinforcement helps prev...read more
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Reasoning and aptitude

Q1. Design Mix of concrete
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Design mix of concrete refers to the process of selecting suitable ingredients and determining their proportions to produce concrete with desired properties.
• Design mix involves selecting the type and quality of materials such as cement, aggregates, and water.

• Proportions of each material are determined based on the desired strength, workability, and durability of the concrete.

• Factors like environmental conditions, const...read more
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Q1. Concrete related questions
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Q1. Concrete related questions
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Core as well as basics

Where a person could learn more being at home or away from home

Q1. Situation based questions
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Q1. What is the procedure to perform Rebound Hammer Test?
Ans. 
Rebound Hammer Test is a non-destructive test to determine the compressive strength of concrete.
• Calibrate the rebound hammer before use

• Clean the surface of the concrete to be tested

• Hold the rebound hammer perpendicular to the surface and press the plunger to release the hammer

• Record the rebound value and repeat the test at least twice on each location

• Calculate the average rebound value and use a conversion chart to det...read more
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Q2. What are the next procedure when cubes does not attain strength as per is code?
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If cubes do not attain strength as per IS code, next procedures include identifying the cause, taking corrective measures, and retesting.
• Identify the cause of low strength, such as improper mixing, curing, or testing procedures.

• Take corrective measures, such as adjusting the mix proportions, improving curing conditions, or retesting with proper procedures.

• Retest the cubes to ensure they meet the required strength as pe...read more
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Q3. Reason to leave ex company
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Q4. Why you have choosen RDC Concrete?
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Easy questions from percentage,profit loss and Reasoning

Q1. Give a brief Introduction of yourself.
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Q2. Topic of research in M.tech
Ans. 
My research topic in M.tech was on the development of machine learning algorithms for predictive maintenance in industrial systems.
• Developed machine learning models to predict equipment failures in industrial systems

• Used data from sensors and other sources to train the models

• Implemented the models in real-world scenarios to demonstrate their effectiveness

• Explored different algorithms and techniques to improve the accur
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Q3. How do you measure heat of hydration
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Heat of hydration can be measured using calorimetry.
• Calorimetry involves measuring the heat released or absorbed during a chemical reaction.

• The heat of hydration can be calculated by subtracting the heat released by the reaction of the anhydrous compound with water from the heat released by the reaction of the hydrated compound with water.

• For example, the heat of hydration of calcium chloride can be measured by reactin...read more
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Q4. Usage of mineral admixture
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Mineral admixtures are used in concrete to improve its properties.
• Mineral admixtures are added to concrete to enhance its strength, durability, and workability.

• They can also reduce the amount of cement needed in concrete mixtures.

• Examples of mineral admixtures include fly ash, silica fume, and ground granulated blast furnace slag.

• Fly ash is a byproduct of coal combustion and is commonly used as a mineral admixture in c...read more
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Q1. Normal discussion related to salary hike.
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Total of 25 questions and duration of 30 minutes will be given to us. Topics are verbal, decision makings questions, quant , surface area and Volume.

People are who cleared first round will be called for second round GD and here they will give 10 minutes time for each team. each team consist of 10 to 14 people. topics could be general or situational in the field.

Q1. All technical questions about concrete and quite basic questions.
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Q1. This is the final Round to test your Managerial skills , Here in RDC they look for the people who have ample Leadership qualities rather Technical.
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Simple basic questions

General topics mainly they consider the communication skills as well as relevance of the topic.

Q1. Tell me about your family background
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Q2. How you deal with tough situations
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Q3. How you lead your project
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Q4. How you deal with angry truck drivers who transfer the concrete load?
Ans. 
I would remain calm, listen to their concerns, empathize with their situation, and work towards finding a solution together.
• Remain calm and composed

• Listen actively to understand their concerns

• Empathize with their situation

• Work towards finding a mutually beneficial solution

• Offer alternatives or solutions to address their issues

• Maintain professionalism and respect throughout the interaction
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Q5. Will you support giving bribe or u decline it
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General Civil Questions were asked....get thorough with IS Codes

Q1. General questions and field related questions were asked by the team
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Q2. Where do u see urself in concrete industry in the next 5 years
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Q3. How do u judge urself
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