Ferrous Crete India Interview Questions and Answers

The ratio of nominal mix of concrete refers to the proportion of cement, sand, and aggregate used in the mix.

• Nominal mix ratios are typically expressed as 1:2:4 for M15 grade concrete, meaning 1 part cement, 2 parts sand, and 4 parts aggregate.

• Different grades of concrete have different nominal mix ratios, such as 1:1.5:3 for M20 grade concrete.

• The ratio is important for ensuring the desired strength and durability of ...read more

Tests on concrete are conducted to assess its strength, durability, and quality.

• Compression test is commonly used to determine the strength of concrete

• Slump test is performed to assess the workability of fresh concrete

• Ultrasonic pulse velocity test is used to evaluate the quality of concrete

• Rebound hammer test is conducted to estimate the compressive strength of concrete

• Core test is done to assess the in-place strength...read more

Green building materials are environmentally friendly materials that help reduce the environmental impact of construction projects.

• Green building materials are made from renewable resources, recycled materials, or materials that have low embodied energy.

• They help in reducing energy consumption, water usage, and waste generation during the construction process.

• Examples of green building materials include bamboo, recycle...read more

Concrete tests assess its strength, durability, and workability to ensure structural integrity and performance.

• Compressive Strength Test: Measures the ability of concrete to withstand axial loads, typically using a cube or cylinder sample.

• Slump Test: Evaluates the workability and consistency of fresh concrete by measuring the vertical settlement of a cone-shaped mold.

• Flexural Strength Test: Assesses the tensile strengt...read more