TY - GEN
T1 - A numerical and experimental study of sand-rubber mixtures subjected to oedometric compression
AU - Badarayani, Pravin
AU - Richard, Patrick
AU - Cazacliu, Bogdan
AU - Artoni, Riccardo
AU - Ibraim, Erdin
PY - 2019/6/25
Y1 - 2019/6/25
N2 - The stockpiling of waste tires at landfill sites has become a nuisance for the society. One of the alternatives could be converting the recycled rubber into powdered form and mixing it with soil to use it as the backfill of the retaining structures. This paper is based on the study of such sand-rubber mixtures. In this work, Discrete Element (DEM) simulations were employed to study the mechanical response of sand-rubber mixtures with respect to a column of grains enclosed within a rigid cylindrical confinement, and subjected to an oedometric compression by the fixed velocity displacement of one of the horizontal walls. Further, experimental analysis was also carried out by using a uniaxial load cell to load the sand-rubber mixtures under compression. Different initial packings of sand-rubber mixture were prepared by varying: (a) the packing volume fraction and (b) the volume fraction of rubber. The mechanical response at small strains was studied for these sand-rubber packings. The mixture behavior was observed to be more sand-dominant or rubber-dominant depending on the rubber fraction and the mixture quality. Moreover, variation in the initial volume fraction of the packing also caused a difference in the load bearing of the packings for a given strain and a given rubber fraction.
AB - The stockpiling of waste tires at landfill sites has become a nuisance for the society. One of the alternatives could be converting the recycled rubber into powdered form and mixing it with soil to use it as the backfill of the retaining structures. This paper is based on the study of such sand-rubber mixtures. In this work, Discrete Element (DEM) simulations were employed to study the mechanical response of sand-rubber mixtures with respect to a column of grains enclosed within a rigid cylindrical confinement, and subjected to an oedometric compression by the fixed velocity displacement of one of the horizontal walls. Further, experimental analysis was also carried out by using a uniaxial load cell to load the sand-rubber mixtures under compression. Different initial packings of sand-rubber mixture were prepared by varying: (a) the packing volume fraction and (b) the volume fraction of rubber. The mechanical response at small strains was studied for these sand-rubber packings. The mixture behavior was observed to be more sand-dominant or rubber-dominant depending on the rubber fraction and the mixture quality. Moreover, variation in the initial volume fraction of the packing also caused a difference in the load bearing of the packings for a given strain and a given rubber fraction.
UR - http://www.scopus.com/inward/record.url?scp=85069633552&partnerID=8YFLogxK
U2 - 10.1051/e3sconf/20199214010
DO - 10.1051/e3sconf/20199214010
M3 - Conference Contribution (Conference Proceeding)
AN - SCOPUS:85069633552
VL - 92
T3 - E3S Web of Conferences
BT - 7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019
A2 - Ibraim, Erdin
A2 - Tarantino, Alessandro
PB - EDP Sciences
T2 - 7th International Symposium on Deformation Characteristics of Geomaterials, IS-Glasgow 2019
Y2 - 26 June 2019 through 28 June 2019
ER -