Biogene Innovation Interview Questions and Answers

Physical & Chemical tests of Steel Reinforcement include tensile strength, elongation, chemical composition, and corrosion resistance.

• Tensile strength test measures the maximum stress a material can withstand before breaking

• Elongation test measures the ability of the material to stretch before breaking

• Chemical composition test determines the percentage of elements present in the steel reinforcement

• Corrosion resistance test measures the ability of the material to resist rust a...read more

The passing criteria of concrete cubes is based on the compressive strength achieved by the cubes after a certain period of time.

• The cubes are usually tested after 7 and 28 days of curing

• The passing criteria varies depending on the grade of concrete used

• For example, for M20 grade concrete, the passing criteria is 20 N/mm² after 28 days of curing

• The cubes are tested using a compression testing machine

Aggregate test is a method to determine the strength of coarse aggregates. Results criteria depend on the type of aggregate.

• Aggregate tests include crushing value test, impact value test, and abrasion value test.

• The results criteria for each test vary depending on the type of aggregate being tested.

• For example, the crushing value test result criteria for basalt aggregate is 25%, while for limestone aggregate it is 30%.

• The impact value test result criteria for basalt aggregate...read more

Pre & post pour checks are essential to ensure the quality of concrete.

• Pre-pour checks include inspection of formwork, reinforcement, and concrete mix design.

• Post-pour checks include slump test, air content test, and temperature monitoring.

• Other checks include curing, finishing, and testing for compressive strength.

• These checks help ensure that the concrete is of the desired quality and meets the project specifications.

Concrete cover is the thickness of concrete between the surface of embedded reinforcement and the outer surface of the concrete.

• It is required to protect the reinforcement from corrosion and fire damage.

• The thickness of the concrete cover depends on the type of structure and the environmental conditions.

• The minimum concrete cover is specified in the design codes and standards.

• For example, in reinforced concrete columns, the minimum concrete cover is 40mm.

• In marine structures,...read more

Cement and concrete tests are used to ensure the quality and strength of the materials used in construction.

• Tests for cement include fineness, setting time, compressive strength, and soundness.

• Tests for concrete include slump, compressive strength, air content, and density.

• These tests are important to ensure that the materials meet the required standards and specifications for construction projects.

• Results from these tests can also be used to troubleshoot any issues that may ...read more