Pipe Abandonment
When existing pipe infrastructure including gas and water mains are either not required or have reached their end-of-life cycle, it is generally cheaper to decommission than replace or excavate out. Some of these pipes run below critical assets like roads or railways or existing structures. Abandonment without proper decommissioning, can lead to pipe collapse causing damage instability in the overlying soils, potentially damaging the asset or structure above.
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What is Pipe Abandonment?
When existing utilities are no longer required and are abandoned, there are two main options.
- Open cut, excavate and remove existing utility and backfill trench along removed utility. This option requires access above the utility. If the utility is running under structures, major roads or other assets, this will cause costs and delays with road closures etc.
- Utility abandoned and left untreated: This poses a few issues. If the abandoned utility is a gas main, it could have gas residue which could post a future risk. The other main risk is that over time the utility will deteriorate, mainly at joints and start to collapse. If this occurs under a road, or structure it will cause sinkholes or collapse of structures.
Our solution: We completely fill the utility with our R-Geo cellular concrete. With 0.3% creep, the R-Geo will not shrink, ensuring the pipe will remain full ensuring no air gaps within pipe remain. Once cured, cellular concrete will harden to compressive strengths greater than soil, ensuring any assets or structures over the pipe are no longer at risk of failure due to ground subsidence caused by pipe decay.
The RGEO Advantage
Unrivalled Experience
We have a team of qualified structural engineers, geologists, project managers, supervisors and technicians with highest level of expertise and training.
Cutting-Edge Technology
We invest in the latest technology, equipment and materials, constantly reviewing latest developments from around the world
Quality Assurance
Our commitment is backed by internal quality assurance systems and processes
Time Efficiency
Lightweight cellular concrete ensures rapid placement, is self compacting and can be pumped long distances; accelerating construction schedules
Affordable Solutions
We ensure the solutions provided are affordable and competitive when compared to other similar companies
Environmentally Conscious
Low carbon footprint using less raw materials, reduced site traffic and excellent thermal insulation properties