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The formation of cracks on the concrete surface may lead to reduce the durability of the concrete. The crack may form in a short period, or it may take a few years, but it will cause the structure to be too severe.
Grouting is a process of injecting dense fluid into cracks or cavities to fill the gaps in structural works such as concrete, masonry, other non-structural works such as tiling.
The grout is the mixture of paste that contains cement, sand, chemical & a certain quantity of water which can be injected to seal the cracks or pothole.
The grout is used to seal the crack and used in tile flooring work to fill the gap between the tiles, filling the gaps for waterproofing and soil stabilization.
Grouting will be classified as below using their core materials
Types of grouting can be classified as below.
G1 Grouting
The strength of the G1 type grouting will be around & not less than 30 N/Sq Mm in 7 days and 40 N/Sq Mm in 28 days. Mostly this type of grout is used in steel structures such as tower erection work, ships.
G2 Grouting
The G2 grout compressive strength should be 50 N/mm2 in 7 days and 60 n/mm2 in 28 days and used to construct the prefabricated structure and other heavy machinery erection work subjected to vibrations. The gap between the base plate and the pedestal has been filled by the grout, which can arrest the vibration.
Un sanded & Finely sanded grout – The un sanded grout & finely sanded ground were used in wall tile laying work where the filling gap between 3mm to 9mm.
Cementitious grout – Cementitious grout is the combination of cement and sand used to fill the flooring tile gap. Also, it is used to seal cracks that happen in concrete surfaces.
Epoxy grout – The epoxy grout manufactured by chemicals such as resins, polypropylene and curing compounds. The epoxy grouts are costlier than other grout types, but it is much stronger and prevents the moisture penetration into the concrete surface.
The application of grouting is simple and easy. The grouting material is available in a powder liquid state.
For example, if we are going to apply cementitious grout, then first measure the grout’s required volume. Now take a certain quantity of cement and add water as required workability, and mix well. Then pour or inject the grout into the crack surface or the cavities gently.
Happy Learning 🙂
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