5 Different Types of Grout Injection Used For Underpinning

by Sandy Mudaliar Australia's Most Innovative Writer

Grout injection underpinning is a technique of filling the open joints, cracks, honeycombs, or voids, in masonry or concrete structural members. It is not a structural pipe repairing technique, it is used in collaboration with repair techniques to fill voids and gaps. This technique is performed with pressure using a grout material that gives the expected results like strengthening a building and avoiding water ingress.

Different grout types are used to fix and strengthen the masonry and concrete structural members. The compatibility of the grout with the original material should be considered when selecting the type of grout injection underpinning in Perth for a specific type of concrete or masonry repair work. Scroll down and take a look at the 5 different types of injection grouting used for underpinning.

1. Polymer injection grouting

Underpinning using polymer injection grouting is done with polymers like vinyl ester, polyester epoxy, acrylic resins, and polyurethane. This type of grout injection is appropriate for concrete repair work. To achieve the desired results, polymer injection grouts can be modified by adding modifiers to basic resins and curing agents.

2. Fibre-reinforced injection grouting

Fibre-reinforced grout injection underpinning is resistant to impact and offers good flexural ductility and strength. It can be used to repair concrete buildings as well as masonry structural components. To eliminate fibre segregation, this sort of injection grout requires specialised abilities.

3. Gas-forming injection grouting

The theory behind gas-forming injection grouting is that the gas bubbles enlarge the grout to compensate for shrinkage after it has been applied. Because this sort of grouting is temperature sensitive, it cannot be employed in areas where the temperature is pretty high.

4. Cement-sand injection grouting

The cement-sand grouting method needed more water and cement content. When using cement sand grouting for underpinning, the grout will shrink and break during the hardening stage. It is relatively simple to use and widely available in the market, and it is employed where structural strength augmentation is not required. It is used to restore concrete and masonry constructions.

5. Sulfo-aluminate Injection Grouting
   

Underpinning using sulfo-aluminate grout injection works on the idea of shrinkage compensation. Shrinkage compensated cement or anhydrous Sulfo-aluminate are costly additives used in these sorts of grouting. This aids in the production of expansion once the grout has been set. Such grouts require post-hardening curing, which will be useless if wet curing is not available.

These are the 5 different types of grout injection used for underpinning. If you like this piece of content, share it with your friends, and get back to us for more exciting content!

Author’s Bio - The author is a reliable waterproofing contractor who is known for offering quality services regarding grout injection underpinning in Perth, and is an avid blogger.   

Sponsor Ads

• Ad Space Available - Rent it Now!

Created on May 22nd 2022 07:20. Viewed 162 times.

Comments