Virginia Annular Space Grouting

Newport News, VA


1100 feet of pile-supported 34″ PCCP water line over a drinking water reservoir was being slip-lined. This Newport News, Virginia annular space grouting project was specified by the designer to use cellular concrete. The relining contractor used 30″ welded HDPE for the slip line, which then required annular space grouting.

There were multiple leaks at the joints between the PCCP sticks. Work was complicated by a seasonal light display, which limited access hours to the job site.



The designer specified 55PCF wet cast density CJFill-Standard cellular concrete for the annular space grouting. Cellular concrete is highly flowable. High flowability ensures low installation pressure, reduces flotation of lightweight carrier pipes, and ensures complete void filling outside of the host pipe. Using cellular concrete for annular space grouting was specified by the HDPE slip lining pipe manufacturer. Buoyancy control was by water fill of the carrier pipe.

Nearly every joint on the pipe was leaking. Each joint had to be grout tight prior to starting the grouting process.


All venting was over water. CJGeo completed this Virginia annular space grouting project without introducing any contaminants to the drinking water reservoir.

The 55PCF cellular concrete provided a break strength of approximately 700psi at 28 days. Peak installation pressure was 18psi.

Speak With An Expert

Facing a similar challenge? Give us a shout or shoot us a text. Click the state marker for the location of the project for contact info for the appropriate rep.