*As determined by method of U.S. Army Corps of Engineers, EDM, 1110-2-1906 and ASTM D2434
WATER ABSORBTION*
CLASS II
CLASS III
CLASS IV
Maximum Cast Density, PCF
30
36
42
% Water Absorption After 120 Days
20
16
14
*Long term total immersion as percent of cast density per method of ASTMC796
RESISTANCE TO RAPID FREEZING AND THAWING*
NUMBER OF FREEZE - THAW CYCLES
CLASS II
(30 PCF)
CLASS IV
(40 PCF)
30
98
98
80
90
95
120
86
90
330
70
79
Relative “E” Percent at Cast Density
* As determined by methods of ASTM C 666 modified to allow for the insulating properties of GeoCell.
Lower Northwest Interceptor Sacramento, CA
Annular Space Grouting
This project consisted of a 19-mile sewage conveyance pipeline and pump station system that required micro-tunneling methods to install the new lines anywhere pipe could not be installed in an open-cut trench, such as under the Sacramento River or I-80.
The micro-tunneling operation was completed by filling the annular space around the pipe with Geofill LD cellular concrete to prevent corrosion and movement. This flowable material also reduced potential flotation or collapse of the carrier pipe.
