As part of a large transportation project, 2000 linear feet of 24″ water main needed to be relocated out of a highway right-of-way.
Due to phasing, the old water main was located under the existing roadway and could not be accessed, except for at one point near the center of the run. So, the abandonment grout had to meet VDOT’s minimum strength requirements for flowable fill, and be pumpable up to 1100LF at low pressure.
CJGeo grouted each run of pipe using 30lb/cuft cellular concrete. Each placement took fewer than two hours, and required no additional traffic control, disruptions to other construction activities, or help from the utility contractor after they installed the bulkheads.