Effect of Particle Size On Mechanical Properties and Particle Breakage of Tailings
2017 (English)In: Canadian geotechnical journal (Print), ISSN 0008-3674, E-ISSN 1208-6010Article in journal (Refereed) Submitted
Tailings material can have different material properties depending upon the type of ore and ore refining process and particle size distribution. Tailings dams are constructed as walk away solutions. Staged construction of tailings dams may lead to breakage of particles in subsequent layers resulting in change in particle sizes of material. This may lead to change in strength parameters upon change in particle sizes. This paper presents the direct shear tests performed on tailings material from a tailings dam. Remolded samples were manufactured in laboratory. The tailings material is separated in to four different particle sizes i.e.1-0.5mm, 0.5-0.25mm, 0.25-0.125mm and 0.125-0.063mm. The tests are performed on different normal stress levels as 50, 100, 150, 300 and 500kPa.The strength parameters are evaluated for each particle size and compared with said particle sizes. In order to study the effect of deposition, the tests are also performed on same material deposited in vertical and horizontal direction. This paper also describes the study of breakage of particles during direct shear tests by sieving the material at the end of each test.
Place, publisher, year, edition, pages
Direct Simple Shear, Tailings Dams, Tailings Material, Particle Breakage, Vertical Height
Research subject Soil Mechanics
IdentifiersURN: urn:nbn:se:ltu:diva-62681OAI: oai:DiVA.org:ltu-62681DiVA: diva2:1084551