Mechanical Behavior of Uniformed Tailings Material in Triaxial Tests

Validerad; 2017; Nivå 1; 2017-04-03 (andbra)
Tailings dams are raised with time depending upon rate of generation of waste. A tailings dam can contain different particle sized materials within its dam body. The newly raised embankment in a tailings dam can be considered as vertical load being applied on subsequent layer. The applied loads can cause deformations and breakage of particles. The particle breakage can then lead to a skeleton with new particle size particles and hence can lead to new material properties. This paper provides the results from triaxial tests conducted on uniformed particle sizes as, 0.5mm-0.25mm, 0.25mm-0.125mm and 0.125mm-0.063mm. The tests are performed at various effective radial stresses. The results are evaluated and compared with each particle size. The results include stress-strain and volumetric behavior during shearing, the effective stress ratio and stress-dilatancy plot. The friction angles are also evaluated and compared with different particle sized specimens. It was found that effective stress ratios were slightly higher when tests were performed at lower confining stresses and vice versa. It was also observed that particle size did not show any effect of friction angles.

Edeskär, TommyLuleå tekniska universitet,Geoteknologi(Swepub:ltu)tomede (author)
Knutsson, SvenLuleå tekniska universitet,Geoteknologi(Swepub:ltu)svek (author)
Luleå tekniska universitetGeoteknologi (creator_code:org_t)

In:Electronic Journal of Geotechnical Engineering: Mete Öner22:06, s. 1717-17301089-3032

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ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Civil Engineerin ...; and Geotechnical Eng ...

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