Grout.pptx

grout in Construction

1. Grouting is non-corrosive. They are not flammable, non-toxic. Also, they are shrinkage compensated. They are capable of adjustable fixtures. They have very good flow characteristics. It has an excellent bond to concrete. In addition, they have no blockage or bleeding. They are easy to use, easy to mix only add water. They are impact and vibration resistant.

2. Cement Grouting Cement grouting is used for high permeability land, for which the grout is prepared using water, sand, and cement. Use of cement grouting Cement grouting is used to provide deposit/stabilization and strengthen to a wide variety of structures such as bridges, marine applications, dams, and rock anchors. The grout material is then injected in liquid form with high pressure to fill the hole in a specified radius around the area used for grouting. The viscosity of the grout material is increased by reducing the water-cement ratio as required. The grouting process is then completed by making a second hole between the primary holes to ensure complete grouting of the area.

3. Chemical grouting is a form of permeation grouting. This type of grouting mix usually includes acrylamides, polyurethanes, acrylates, epoxy, and sodium silicates.

4. Structural Grouting A structure is constructed at the site to be mined. Structural grouting is used to fill the gaps between concrete and rock structures and fill the voids between mined materials. Apart from this, structural grouting is also used to fill cracks in rocks and joints of rocks in underground tunnels. Use of structural grouting Structural grouting is commonly done in tunnels and underground structures.

5. Bentonite Grouting Bentonite is the major component in drilling muds or fluids used in rotary drilling. The suitability of sodium bentonite as a grouting material is 15 times its dry volume when hydrated. Due to its swelling and gel-like permeability property, it is suitable for filling gaps between the casings.

6. Use of bentonite grouting Sodium bentonite grout is typically used for sealing and covering unutilized wells, sealing of earthen structures, and water-proofing. Due to the high montmorillonite (an aluminum-rich clay mineral of the smectite group, containing some sodium and magnesium.) ​content and the ability to swell on water absorption, this grout is suitable for grouting of annular space between boreholes created during good construction.

7. Bituminous Grouting Hot bitumen grouting is a special type of grouting in which molten hot coral is used as the grouting material. Use of hot-bitumen grouting Hot-bitumen grouting is often used to cut high volumes of underground water flow. The key characteristic of hot bitumen grout is its temperature-dependent viscosity.

8. Resin Grouting Epoxy grouts are also known as reactive resin grouts. This type of grouting material is made from a cement-based mixture. It is not waterproof but has the ability to absorb water when wet .