Voids can cause structures to settle and sink but what are voids and why do they need to be filled?

Essentially a void can be anything from a small crack in the foundation to a huge ‘hole’ caused by broken underground pipes rusting away.  There are a number of ways these can occur, some naturally and some due to man’s interference.  Whether it is erosion or building activity that has caused the void, we have a concrete grout solution to fill these voids and ensure the overlying ground 0r structure is stable.

How is a void filled?

First, we must ensure that the void can be filled with our microfine cement to regain stability in the structure.
Second, our technicians will either inject the cementitious grout directly into the void through the soil or drill through and create an opening to insert the grout pipe.
Finally, after our fast-drying and hardening mix sets, we will seal the void to contain the grout and avoid any mix falling out.

Common situations for void filling

At BMC Microfine, we have performed numerous void filling and concrete slurry projects and the most common cases are:

• Broken underground pipes rotting away and leaving large empty spaces of air
• Load bearing walls which are not structurally sound such as lift shaft walls
• Gaps between door frames and the structure
• Gaps between slabs such as the project at the Administration Centre at the WA Museum
• and many more…

We are always finding new applications for our void filling service so if any of these situations apply to you, get in touch with us on 08 9303 9297.