Figure 7. — Moisture-density 

 test results. 



150 - 



materials passing a #16 sieve, and all specimens were approximately 5 inches in height 

 and 2-1/2 inches in diameter before testing. 



Finally, falling head permeameters were used to determine the relationships between 

 void ratio and permeability. Typical results of these tests are shown in figure 9. Un- 

 fortunately, tests could not be satisfactorily conducted at void ratios as high as are 

 commonly found in the field, due to channel formation along the smooth walls of the 

 permeameters. Nevertheless, the results indicated that these materials are capable of 

 being relatively impermeable when disintegrated and compacted. 



10 



