POLYPROPYLENE FRICTION ANGLE DATA
NATURAL CONDITION
OTTAWA SAND SP SILT CLAY CL CLAY CH
C 0 C 0 C 0 40 mil Unreinforced
Polypropylene0 29.5 1.2 24 1.7 20.5 45 mil Reinforced
Polypropylene0.6 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
Polypropylene1.2 19.0 1.2 16.8 1.5 14 45 mil Reinforced
Polypropylene0.5 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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