Question 1

Which chemical is used for grouting?

Accepted Answer

Depending on the type of the project and desired properties of the grout, several chemicals are used for grouting. Some important among them are Portland cement, epoxy resin, bentonite, Polyurethane , Acrylic polymers and some additives to enhance special properties.

Question 2

When should grout be applied?

Accepted Answer

Grout application timing is crucial to ensure a proper and successful grouting process. It should be applied after installation of primary materials like stones, tiles, bricks etc. In case of void filling it should be applied after cleaning the surface and making it ready for the process to carry out effectively.

Question 3

What are the four main types of grout?

Accepted Answer

Choice of Type of grout depends on the project requirements, type of material to be grouted, area to be grouted, environmental factors. Some main types are cement based grout, epoxy based grout, non shrink grout, sanded and unsanded grout, polyurethane grout.

Question 4

Why is grout used in concrete?

Accepted Answer

Grout is used in concrete to enhance its properties and increase its durability. It is used to fill the gaps and voids in concrete structure, repair and rehabilitation of existing structures, improve anchoring and bonding properties etc.

Question 5

What is wall grouting?

Accepted Answer

It is the technique usually adopted in tile or stone installation on the wall. It is the process of filling the joints between the tiles or stones to give proper bonding , enhance the structure stability and give a pleasing look with good finish.

Question 6

Why does grout sometimes crack or crumble over time?

Accepted Answer

This type of failure in grouting is usually observed not initially but in the long run due to some of the reasons such as poor installation of grout, less curing time, high shrinkage due to improper water cement ratio in the grout mix, improper selection of grout material.