How advancements in ground engineering can help reduce council spend
Concrete Underpinning vs Resin Injection
Following last year’s heatwave, the number of subsidence claims being made dramatically increased, highlighting how record hitting temperatures took their toll on UK buildings. Reports from around the country show that subsidence is also affecting council-owned residential and commercial properties. These reports have shown that councils need to rehome tenants while the underlying problem is fixed or that some buildings may need to be demolished altogether. However, with the latest advancements in ground engineering, there are alternative solutions councils can consider to help alleviate these problems, saving them money and reducing tenant disruption.
When subsidence does occur, the first solution to come to mind is often traditional concrete underpinning as it’s a method that has been practiced for over 100 years. However, this tried and tested method is often slow, labour intensive and costly. As access is required under the original foundation, tenants are generally required to vacate their home while the excavation is being completed, increasing admin time and spend for councils.
Advanced solutions in the ground engineering sector, such as Mainmark’s Teretek® engineered resin injection, can help councils mitigate these problems by offering a modern alternative to traditional underpinning.
Although resin injection is a relatively new method compared to underpinning, it is still a proven one, having been used globally for over 20 years. The process, likened to keyhole surgery, involves injecting expanding structural resin into the existing foundations through small incisions made in the ground, typically only 16mm in diameter from outside a building. The resin then flows into the soil and expands, compressing the surrounding soil while filling any voids and cracks.
By eradicating the need to excavate, this process is cleaner than concrete underpinning and less disruptive. As large excavations underneath the original foundation are not required, many projects are completed in hours and occupants can usually stay in the building while the work is carried out.
Robbie Blanchfield, commercial manager at Mainmark, commented: “Local government budgets are always tight and closely scrutinised, which is why it’s vital they are made aware of solutions that could potentially save a considerable sum of money. Additionally, the minimal invasive methods reduce the need for onerous work such as deep excavations or partial demolition, meaning that these methods can be applied while the property is still occupied. Our Teretek engineered resin injection solution is a simple yet effective way to repair subsidence problems and a method that councils should consider when faced with ground engineering problems.”
For more information regarding resin injection and its ability to save money and disruption please visit: mainmark.com/uk/technology/teretek/