POLYPROPYLENE FRICTION ANGLE DATA

NATURAL CONDITION
 
OTTAWA 
SAND
SP
SILT CLAY
CL
CLAY
CH
 
  C 0 C 0 C 0
40 mil Unreinforced 
Polypropylene
0 29.5 1.2 24 1.7 20.5
45 mil Reinforced 
Polypropylene
0.6 31.0 0.7 26.4 1.7 16.0

WETTED CONDITION
 
OTTAWA SAND
SP
SILT 
CLAY
CL
CLAY
CL
 
  C 0 C 0 C 0
40 mil Unreinforced 
Polypropylene
1.2 19.0 1.2 16.8 1.5 14
45 mil Reinforced 
Polypropylene
0.5 26.2 0 24.8 2.3 17.6
 

C= apparent adhesion in psi

O= interface friction angles in degrees

All testing done in accordance with ASTM D3080 by R.K. Frobel & Associates

 

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