TY - CONF
T1 - Permeability of saturated and unsaturated iron ore fines
AU - Wang, H.
AU - Koseki, J.
AU - Nishimura, T.
N1 - Publisher Copyright:
© 2019 7th Asia-Pacific Conference on Unsaturated Soils, AP-UNSAT 2019. All rights reserved.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2019
Y1 - 2019
N2 - Concerning on the liquefaction behavior of a type of bulk cargoes, iron ore fines (IOF), during maritime time transportation, systematic experimental and numerical programs were conducted. In this study, as an important parameter for seepage analysis, permeability of saturated and unsaturated typical IOF were evaluated in a triaxial system. As a comparison, similar tests were also conducted on a widely used laboratory material, Toyoura sand. The tests were conducted very carefully considering effects of system head loss and filter clogging issues on the hydraulic gradient applied to specimens. It was revealed that coefficient of permeability (k) of the typical IOF with compaction degree of 91-93% was about 1×10-5m/s for saturated condition (Sr=100%) and 2×10-7 m/s for Sr=84%. In addition, k of IOF-B in a full Sr range was estimated based on water retention data and k of unsaturated Toyoura sand in the past studied were summarized, which suggested that the testing system performed reasonably well.
AB - Concerning on the liquefaction behavior of a type of bulk cargoes, iron ore fines (IOF), during maritime time transportation, systematic experimental and numerical programs were conducted. In this study, as an important parameter for seepage analysis, permeability of saturated and unsaturated typical IOF were evaluated in a triaxial system. As a comparison, similar tests were also conducted on a widely used laboratory material, Toyoura sand. The tests were conducted very carefully considering effects of system head loss and filter clogging issues on the hydraulic gradient applied to specimens. It was revealed that coefficient of permeability (k) of the typical IOF with compaction degree of 91-93% was about 1×10-5m/s for saturated condition (Sr=100%) and 2×10-7 m/s for Sr=84%. In addition, k of IOF-B in a full Sr range was estimated based on water retention data and k of unsaturated Toyoura sand in the past studied were summarized, which suggested that the testing system performed reasonably well.
KW - Iron ore fines
KW - Liquefaction
KW - Permeability
KW - Toyoura sand
KW - Triaxial system
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U2 - 10.3208/jgssp.v07.064
DO - 10.3208/jgssp.v07.064
M3 - Paper
AN - SCOPUS:85087338921
SP - 401
EP - 409
T2 - 7th Asia-Pacific Conference on Unsaturated Soils, AP-UNSAT 2019
Y2 - 23 August 2019 through 25 August 2019
ER -