Physical Properties - Geofill LD

CO EFFICIENCY OF PERMEABILITY*
	CLASS II	CLASS III
Maximum Cast Density, PCF	30	36
Co efficiency of Permeability, k, cm/sec
@ Effective Confining Stress, 2.5 PSI	4.7 x 10 -5	1.5 x 10 -6
@ Effective Confining Stress, 18PSI	1.9 x 10 -5	5.4 x 10 -7

*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.

Lurie Medical Center
Chicago, IL

Load Reducing Backfill

This project required backfilling narrow areas up to 45’ deep between the new foundation and the sheet piles. Granular backfill would have required compaction which was logistically impossible, while flowable fill or CDF would exert too much load on the foundation wall.

Geofill Hybrid (70 PCF) reduced the lateral load against the foundation and eliminated hydrostatic pressure by being impermeable. The flowability of the material resulted in minimal disruption to the site.