Columbus, MS AFB Pipe Abandonment
The Job
An environmental remediation company contracted CJGeo for a pipe abandonment project at Columbus Air Force Base in Mississippi. The scope involved filling approximately one mile of 8-inch jet fuel pipelines. After the fueling system was taken out of service and cleaned, the pipes required filling with grout. This ensures the long-term stability of the active airfield above.
Preparing the longest run for abandonment.
The Challenge
The abandoned pipelines posed a risk of future settlement. They could also act as conduits for groundwater if left empty. The project consisted of four different pipe runs, with the longest extending 1,800 linear feet. Successfully filling such long sections required a highly flowable grout that could travel the distance under minimal pressure. Crews had to complete the work in two days next to an active airfield.
The Solution
CJGeo proposed abandoning the pipes with 25lb/cuft CJFill-Ultra Lightweight cellular grout. Due to the project’s relatively low volume, crews used wet batch generation to produce the material onsite. This cellular grout is nearly 80% air, which gives it exceptional flow characteristics. This property allowed the material to be pumped the full length of each pipe run at single-digit placement pressures. The low pressure protected the old pipelines from damage during filling. The crew safely completed the entire project in two days.
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