Correlation friction angle/grain size for stone material for embankments
Correlation friction angle/grain size for stone material for embankments
(OP)
Hello,
I have a embankment of stone material whis is stabile with friction angle fi=42 and cohesion c=0. Are there any connections/correlations between the friction angle and cohesion of my stone material and grain size of the stone of the materials. Does exists dependence of grain size due to the friction angle and cohesion? Which granulation of stone material I must to select for my parameter?
I have a embankment of stone material whis is stabile with friction angle fi=42 and cohesion c=0. Are there any connections/correlations between the friction angle and cohesion of my stone material and grain size of the stone of the materials. Does exists dependence of grain size due to the friction angle and cohesion? Which granulation of stone material I must to select for my parameter?
RE: Correlation friction angle/grain size for stone material for embankments
Cohesion is usually unrelated to friction angle but mineral type.
RE: Correlation friction angle/grain size for stone material for embankments
A lower bound phi can be determined by measuring the angle of repose of the material.
As oldestguy indicates, no cohesion is generally present in granular/stone material.
Mike Lambert
RE: Correlation friction angle/grain size for stone material for embankments
Irrespsective of measured values for cohesion, don't rely on that strength for your long-term performance.
f-d
ípapß gordo ainÆt no madre flaca!
RE: Correlation friction angle/grain size for stone material for embankments
http://files.engineering.com/getfile.aspx?folder=f...
http://files.engineering.com/getfile.aspx?folder=3...
RE: Correlation friction angle/grain size for stone material for embankments
Have you ever designed a dam before?
Mike Lambert
RE: Correlation friction angle/grain size for stone material for embankments
It's no more online, apparently, hopefully I can retrieve it from my chaotic jumble of material...
www.mccoy.it
RE: Correlation friction angle/grain size for stone material for embankments
Mike Duncan's lecture 'Friction Angles for Sand, Gravel and Rockfill' is pretty good and authoritative I reckon.
Results should still be evaluated with technical commonsense.
If interested you may click on the www.mccoy.it site, get my e-mail there, I'll answer to your email with Duncan's paper attached.
www.mccoy.it
RE: Correlation friction angle/grain size for stone material for embankments
Shear strength of soils especially Phi rely on many parameters including
the effective normal stress
the existence of water or not .
The confining pressure .
RE: Correlation friction angle/grain size for stone material for embankments
RE: Correlation friction angle/grain size for stone material for embankments