Cognis Solutions Interview Questions and Answers

Steel is strong, durable, and flexible while cement is a binding material that hardens when mixed with water. They are used in concrete for their complementary properties.

• Steel is strong and can withstand heavy loads, making it ideal for reinforcing concrete structures.

• Steel is also flexible, allowing it to bend without breaking under stress.

• Cement is a binding material that hardens and sets when mixed with water, providing strength and durability to concrete.

• Cement fills the...read more

Types of tests conducted on concrete include compressive strength test, slump test, and water permeability test.

• Compressive strength test measures the ability of concrete to withstand loads

• Slump test measures the consistency and workability of concrete

• Water permeability test evaluates the durability of concrete against water penetration

The finishing process involves tiling, wall gypsum, plaster, and waterproofing with specific material proportions and properties.

• The first step is to prepare the surface by cleaning and leveling it.

• Waterproofing is done to prevent water damage to the walls and floors.

• Gypsum plaster is used to create a smooth surface for painting or wallpapering.

• Tiling involves laying tiles on the floor or walls using adhesive and grout.

• The material proportions and properties depend on the typ...read more

IS code for RCC is IS 456:2000

• IS 456:2000 is the Indian Standard code for the design and construction of reinforced concrete structures

• It covers the general requirements for the design and construction of RCC structures

• The code provides guidelines for materials, design, construction, quality control, and maintenance of RCC structures

Concrete is a strong and durable building material made from a mixture of cement, sand, gravel, and water.

• Concrete is commonly used in construction for foundations, walls, floors, and sidewalks.

• It can be reinforced with steel bars to increase its strength and flexibility.

• Different types of concrete, such as ready-mix and precast, are used for various construction projects.

• Concrete can be colored, stamped, or polished for decorative purposes.

• Proper curing is essential for conc...read more

Grade of concrete refers to the strength of concrete determined by its compressive strength at 28 days.

• Grade of concrete is denoted by the ratio of cement, sand, and aggregate used in the mix.

• The most commonly used grades of concrete are M20, M25, M30, and M35.

• Higher grade of concrete indicates higher strength and durability.

• Grade of concrete is determined by conducting compressive strength tests on concrete cubes or cylinders after 28 days of curing.