Table 3 . --Grain-size distributions and unified 

 and AASHO soil classifications 



Sample 



Cumulative percent passing 

 sieve sizes 



AASHO 





5/8" 



: =4 : 



= : 



: "40 



: #60 



:#200 : 



.05mm. 



. 02mm . 



. 01mm . : 



. 005mm . : 



. 001mm . 







917-1-1 



97 



91 



69 



33 



25 



12 . 



6 



1 1 



1 



7 . 6 



5 . 8 



A 7 



4 . Z 



1 o 

 1 . 8 



cur cm 



A- 1 - D 



917-1-2 



95 



87 



63 



30 



23 



12 . 



4 



/ 



•7 



6. 3 



C 1 



o . o 



•7 1 

 J . 1 



7 n 

 Z . U 



cur cm 



A- 1 - D 



917-1-3 



95 



90 



68 



32 



25 



12 . 



i 

 1 



1U 



U 



o ft 



D . I 



c ft 



7 C 



Z . b 



cur CM 



A- 1 -D 



917-1-4 



71 



64 



48 



22 



16 



o . 



A 



4 



r 

 b 



D 



3. 5 



7 c\ 



z . y 



7 7 

 z . z 



. z 



Cur CM 

 bW- oM 



A 1 n 



a- i -a 



917-1-5 



86 



78 



61 



29 



21 



Q 



O . 



Q 



•7 



/ 



7 

 O 



A C 



4 . b 



Z A 

 O . D 



7 7 

 Z . / 



Q 

 . O 



cur cm 



A- 1 - D 



917-2- 1 



94 



88 



72 



34 



23 



1 1 . 



1 



1 ft 



A 



4 



A A 



O . 4 



C 7 

 b . Z 





1 Q 



i . y 



CUJ CM 

 b n - oiM 



A- 1 - D 



917-3-1 



90 



79 



58 



31 



24 



14 . 



4 



1 7 

 I J 



1 





O . 



. b 



J . u 



CM 



A 1 K 



A- 1-D 



917-3-2 



95 



84 



5 S 



32 



27 



17 . 



6 



15 



4 



11.4 



7 . 9 



a n 



4 . y 



3 . 



SM 



A 1 U 



A-I-D 



917-3-3 



85 



76 



56 



28 



22 



lz . 



1 



y 



A 



4 



7 . 4 



5 . 



3 . 3 



1 . 5 



SW- SM 



A-l-b 



917-4-1 



97 



86 



66 



33 



25 



12. 



8 



1 1 



6 



8 . 3 



7 . 3 



4 . 7 



1 . 5 



SW-SM 



A-l-b 



917-5-1 



94 



90 



75 



28 



15 



2 . 



9 



z 



4 



1 . 



. 7 



. 



. 



SP 



A-l-b 



917G-1-1 



94 



90 



74 



39 



31 



15 . 



4 



1 1 



7 



7 . 8 



6 . 4 



3 . 8 



. 9 



SM 



A-l-b 



917G-1-2 



83 



79 



66 



35 



26 



11 . 





9 



8 



4 . 8 



3 . 8 



1 . 9 



. 5 



SW-SM 



A-l-b 



917G-1-3 



79 



72 



54 



23 



16 



6 . 



5 



6 



1 



3 . 9 



2 . 8 



1 . 9 



. 



SW-SM 



A-l-b 



917H-1-1 



93 



83 



59 



23 



17 



7 . 



9 



/ 



U 



4.5 



3 . 8 



2.2 



. 7 



SW-SM 



A-l-b 



917H-1-2 



89 



80 



58 



24 



16 



6 . 





5 



o 

 o 



4.5 



3 . 9 



2 . 3 



1 . 2 



SW-SM 



A-l-b 



917H-1-3 



84 



76 



57 



27 



19 



9 . 



2 



7 



4 



5 . 



4 . 3 



3 . 2 



. . 7 



SW-SM 



A-l-b 



917H-2-1 



100 



100 



95 



61 



48 



26. 







22 



2 



15 . 5 



13.1 



9 . 5 



3.8 



SM 



A-2-4 



917H-2-2 



100 



99 



92 



54 



41 



20. 



4 



17 



4 



11.6 



9 . 2 



4 . 8 



1 . 3 



SM 



A-2-4 



917H-2-3 



100 



84 



49 



19 



13 



6. 







5 







3.8 



3.4 



2.5 



1.1 



SW-SM 



A-l-a 



917H-2-4 



85 



78 



64 



31 



23 



9. 



7 



8 







4.1 



3.6 



2.0 



.7 



SW-SM 



A-l-b 



917H-3-1 



91 



86 



70 



37 



28 



13. 



7 



11 



1 



8.9 



6.8 



4.6 



2.0 



SM 



A-l-b 



917H-3-2 



72 



66 



50 



26 



20 



10. 



7 



8 



9 



5.0 



4.0 



2.2 



.6 



SW-SM 



A-l-a 



977-1-1 



99 



95 



78 



40 



29 



14. 



4 



12 



3 



9.2 



6.4 



4.5 



2.1 



SM 



A-l-b 



977-1-2 



91 



82 



62 



30 



22 



10. 



3 



6 



9 



5.3 



2.8 



1.0 



.4 



SW-SM 



A-l-b 



977-2-1 



37 



31 



23 



10 



7 



3. 



2 



2 



2 



1.8 



1.4 



.8 



.3 



GW 



A-l-a 



977-2-2 



96 



91 



75 



43 



34 



17. 



3 



12 



1 



8.7 



5.1 



3.6 



1.0 



SM 



A-l-b 



977-2-3 



95 



90 



75 



35 



25 



10. 



6 



7 



8 



4.6 



2.6 



1.3 



.0 



SW-SM 



A-l-b 



977-2-4 



76 



69 



54 



24 



18 



7. 



9 



6 



1 



4.2 



4.0 



2.4 



.7 



SW-SM 



A-l-b 



977-3-1 



95 



90 



71 



38 



29 



15. 







9 



7 



9.1 



4.9 



3.5 



1.1 



SM 



A-l-b 



977-3-2 



95 



90 



71 



38 



29 



15. 







9 



7 



9.1 



4.9 



3.5 



1.1 



SM 



A-l-b 



977-4-1 



100 



97 



80 



26 



14 



1. 



8 



1 



1 



.5 



.5 



.5 



.0 



SW 



A-l-b 



Because of the near identity of all the samples, and because all further testing 

 was to be conducted on only the finer portions of the samples, the remainder of the 

 testing program was confined to determination of the pertinent engineering properties 

 of a single sample from site 917-3. Included were tests to determine moisture-density 

 relationships, shear strength, and permeability. 



Results of the moisture density tests, conducted according to AASHO Test Designa- 

 tion T99-57, Method A, except for variations in maximum grain size, are shown in figure 

 7. Note that for material passing the 3/8" sieve, a maximum dry unit weight of approxi- 

 mately 127 pounds per cubic foot (p.c.f.) was obtained, while for the fraction finer 

 than a #4 sieve, a maximum dry unit weight of approximately 124 p.c.f. was achieved. 



Numerous direct shear and triaxial compression tests were conducted to investigate 

 the effects of unit weight and moisture content upon the shear strength of these 

 materials. However, strengths based upon effective stress parameters showed negligible 

 variation over a wide range of conditions. Typical results are shown in figure 8, which 

 represent the Mohr stress circles at failure for consolidated, undrained triaxial tests 

 on saturated specimens wherein pore pressures were measured. These tests were conducted 

 at an axial strain rate of 0.02 inch per minute, and failure was defined as the maximum 

 ratio of major to minor principal effective stress. All tests were conducted on 



9 



