Ground Beneath Heritage Office Strengthened with Uretek®

The ground needed to be consolidated and strengthened, working around difficult soil conditions. Although traditional permeation grouting methods were originally considered, they were found to be unsuitable for the ground conditions.

Instead, Mainmark recommended injecting patented expanding structural resin, Uretek®. The Mainmark team successfully increased ground capacity to desired compaction levels, delivering the project on time and on budget.

Site access limitations also had to be accommodated, with a busy road at the front of the site and building sites on all three boundaries. The working area around the building perimeter to the boundary measured just 1m to 3m.

The process was closely monitored to achieve specific, engineered results. A dynamic cone penetration test was completed on each column prior to and after (and in some cases, during) injection, until desired compaction levels were achieved. Results were graphed and presented to the client.

As the Uretek® method is clean and involves no water, excavation, cement dust or mess, the project was completed with minimal disruption to schedule and other work groups. The resins used are also non-toxic and environmentally inert.