Maryland Annular Space Grouting

maryland annular space grouting by cjgeoChallenge:

A jack & bore contractor performed a 200LF, 54″ bore under an arterial highway.  After sliding in a 48″ RCP carrier pipe (stormwater), the annular space required grouting.  This Maryland annular space grouting project is located in Jessup.  

maryland annular space grouting using cellular concreteLimits:

Due to site limitations, only one end of the pipe was accessible for grouting.  The length of the placement was approximately 200LF, so grout had to travel 200LF at low pressure, while ensuring a complete fill.

The Solution:

CJGeo proposed 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.  

Result:

CJGeo successfully performed this Maryland annular space grouting project in a single day using cellular concrete.  The peak pressure at the pump did not exceed 5PSI throughout the project.