VisiLean Interview Questions and Answers

Retarders slow down the setting time of concrete while accelerators speed up the setting time.

• Retarders are used in hot weather to prevent the concrete from setting too quickly.

• Accelerators are used in cold weather to speed up the setting time of concrete.

• Retarders are also used to allow more time for finishing and placing concrete.

• Accelerators are used in precast concrete to speed up the production process.

• Retarders and accelerators can be added to concrete mixtures in small...read more

Binding wire is used in construction as per IS code to tie steel reinforcement bars together.

• As per IS code, binding wire should be made of mild steel wire with a diameter not less than 0.9 mm.

• The binding wire should be tightly twisted and free from rust, oil, and other impurities.

• The amount of binding wire required per MT of steel depends on the diameter of the steel bars and the spacing between them.

• For example, for 12 mm diameter steel bars spaced at 150 mm, approximately ...read more

There are several types of piles used in construction.

• There are two main categories of piles: displacement piles and non-displacement piles.

• Displacement piles include driven piles, screw piles, and vibro piles.

• Non-displacement piles include bored piles, jacked piles, and micro piles.

• Other types of piles include sheet piles, composite piles, and helical piles.

• The type of pile used depends on factors such as soil conditions, load requirements, and accessibility.