ABSTRACT The large volumes and the low settling rates of slurry tailings entail some of the most ... more ABSTRACT The large volumes and the low settling rates of slurry tailings entail some of the most challenging issues faced by the geotechnical engineering community such as the design, construction, and maintenance of large waste containment facilities. The recent shift from conventional tailings disposal to thickened tailings discharge requires special attention right at the conceptual level. The fundamental concepts of hindered sedimentation (Pane and Schiffman 1985) and large-strain consolidation (Been and Sills 1981) are generally understood when considered separately. A more critical issue is to understand the transition from sedimentation to consolidation, that is, at what void ratio a slurry settling under gravity becomes a soil possessing effective stresses. A clear answer of this question is crucial in selecting appropriate synthetic polymers for optimum thickening and in developing tailings deposition schedules in the field. Based on two case studies from Canada and South America, this article tries to help understand the transition from sedimentation to consolidation.
Under the ongoing experimental program of fusion neutronics at the LOTUS facility, a number of ac... more Under the ongoing experimental program of fusion neutronics at the LOTUS facility, a number of activation and tritium breeding measurements were recently completed. The presence of Lithium Blanket Module (LBM) made a number of measurements also possible in it alone and in a number of more complex assemblies, incorporating it as one of the components. Both axial and off-axis measurements
One of the objectives of the Lithium Blanket Module (LBM) program is to test the ability of advan... more One of the objectives of the Lithium Blanket Module (LBM) program is to test the ability of advanced neutronics codes to model the tritium breeding characteristics of a fusion blanket exposed to a toroidal fusion neutron source. The LBM consists of over 20,000 cylindrical lithium oxide pellets and numerous diagnostic pellets and wafers. The LBM has been irradiated at the
The Lithium Blanket Module (LBM) is an assembly of over 20,000 cylindrical lithium oxide pellets ... more The Lithium Blanket Module (LBM) is an assembly of over 20,000 cylindrical lithium oxide pellets in an array representative of a limited-coverage breeding zone for a toroidal fusion device. A principal objective of the LBM program is to test the ability of advanced neutronics coding to model the tritium breeding characteristics of a fusion device blanket. The LBM has been
One of the objectives of the Lithium Blanket Module (LBM) program is to test the ability of advan... more One of the objectives of the Lithium Blanket Module (LBM) program is to test the ability of advanced neutronics codes to model the tritium breeding characteristics of a fusion blanket exposed to a toroidal fusion neutron source. The LBM consists of over 20,000 cylindrical lithium oxide pellets and numerous diagnostic pellets and wafers. The LBM has been irradiated at the
The objectives of the LOTUS experimental program are to study, from a neutronics point of view, b... more The objectives of the LOTUS experimental program are to study, from a neutronics point of view, blanket modules having features representative of conceptual fusion reactor blanket designs. Such small-scale generic experiments should help to eliminate possible blind alleys, and thus save much time and money later when commercial-size devices will be constructed. At present, two different types of blanket designs
Geology and climatic and environmental conditions have led to the formation of expansive soils in... more Geology and climatic and environmental conditions have led to the formation of expansive soils in the Eastern Province of Saudi Arabia. Calcium sulphate, which commonly occurs in such soils, is well known for phase transformation and dissolution. Phase changes from gypsum to anhydrite and vice versa, and dissolution of these phases, add to the potential hazards of local expansive soils.
Considerable advances in biofilter technology have been made in the last few decades. Many indust... more Considerable advances in biofilter technology have been made in the last few decades. Many industries such as wastewater, rendering, compositing, electronic and chemical processing industries have adopted this tech-nology for either controlling odors or removing volatile organic ...
... Willy, New York Prakash K, Shidharan A, Baba JA, Thejas HK (2008) Deter-mination of shrinkage... more ... Willy, New York Prakash K, Shidharan A, Baba JA, Thejas HK (2008) Deter-mination of shrinkage limit of fine-grained soils by wax method. Geotech Test J 32:8689 Shuai F (1996) Simulation of swelling pressure measurements on expansive soils. ...
ABSTRACT The large volumes and the low settling rates of slurry tailings entail some of the most ... more ABSTRACT The large volumes and the low settling rates of slurry tailings entail some of the most challenging issues faced by the geotechnical engineering community such as the design, construction, and maintenance of large waste containment facilities. The recent shift from conventional tailings disposal to thickened tailings discharge requires special attention right at the conceptual level. The fundamental concepts of hindered sedimentation (Pane and Schiffman 1985) and large-strain consolidation (Been and Sills 1981) are generally understood when considered separately. A more critical issue is to understand the transition from sedimentation to consolidation, that is, at what void ratio a slurry settling under gravity becomes a soil possessing effective stresses. A clear answer of this question is crucial in selecting appropriate synthetic polymers for optimum thickening and in developing tailings deposition schedules in the field. Based on two case studies from Canada and South America, this article tries to help understand the transition from sedimentation to consolidation.
Under the ongoing experimental program of fusion neutronics at the LOTUS facility, a number of ac... more Under the ongoing experimental program of fusion neutronics at the LOTUS facility, a number of activation and tritium breeding measurements were recently completed. The presence of Lithium Blanket Module (LBM) made a number of measurements also possible in it alone and in a number of more complex assemblies, incorporating it as one of the components. Both axial and off-axis measurements
One of the objectives of the Lithium Blanket Module (LBM) program is to test the ability of advan... more One of the objectives of the Lithium Blanket Module (LBM) program is to test the ability of advanced neutronics codes to model the tritium breeding characteristics of a fusion blanket exposed to a toroidal fusion neutron source. The LBM consists of over 20,000 cylindrical lithium oxide pellets and numerous diagnostic pellets and wafers. The LBM has been irradiated at the
The Lithium Blanket Module (LBM) is an assembly of over 20,000 cylindrical lithium oxide pellets ... more The Lithium Blanket Module (LBM) is an assembly of over 20,000 cylindrical lithium oxide pellets in an array representative of a limited-coverage breeding zone for a toroidal fusion device. A principal objective of the LBM program is to test the ability of advanced neutronics coding to model the tritium breeding characteristics of a fusion device blanket. The LBM has been
One of the objectives of the Lithium Blanket Module (LBM) program is to test the ability of advan... more One of the objectives of the Lithium Blanket Module (LBM) program is to test the ability of advanced neutronics codes to model the tritium breeding characteristics of a fusion blanket exposed to a toroidal fusion neutron source. The LBM consists of over 20,000 cylindrical lithium oxide pellets and numerous diagnostic pellets and wafers. The LBM has been irradiated at the
The objectives of the LOTUS experimental program are to study, from a neutronics point of view, b... more The objectives of the LOTUS experimental program are to study, from a neutronics point of view, blanket modules having features representative of conceptual fusion reactor blanket designs. Such small-scale generic experiments should help to eliminate possible blind alleys, and thus save much time and money later when commercial-size devices will be constructed. At present, two different types of blanket designs
Geology and climatic and environmental conditions have led to the formation of expansive soils in... more Geology and climatic and environmental conditions have led to the formation of expansive soils in the Eastern Province of Saudi Arabia. Calcium sulphate, which commonly occurs in such soils, is well known for phase transformation and dissolution. Phase changes from gypsum to anhydrite and vice versa, and dissolution of these phases, add to the potential hazards of local expansive soils.
Considerable advances in biofilter technology have been made in the last few decades. Many indust... more Considerable advances in biofilter technology have been made in the last few decades. Many industries such as wastewater, rendering, compositing, electronic and chemical processing industries have adopted this tech-nology for either controlling odors or removing volatile organic ...
... Willy, New York Prakash K, Shidharan A, Baba JA, Thejas HK (2008) Deter-mination of shrinkage... more ... Willy, New York Prakash K, Shidharan A, Baba JA, Thejas HK (2008) Deter-mination of shrinkage limit of fine-grained soils by wax method. Geotech Test J 32:8689 Shuai F (1996) Simulation of swelling pressure measurements on expansive soils. ...
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