Air, Water and Vacuum Pluviation of Sand Specimens for the Triaxial Apparatus

Lagioia, Rocco; Sanzeni, Alex; Colleselli, Francesco

doi:10.3208/sandf.46.61

Cited by 51 publications

(22 citation statements)

References 11 publications

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“…It is difficult to prepare uniform specimens for laboratory testing. A lot of methods were proposed in the past to control uniformity (Fretti et al 1995;Lagioia et al 2006;Choi et al 2010). In this study, a traveling hopper with a certain velocity is used to drop the MSW simulant from a fixed height layer by layer until the desired height.…”

Section: Test Proceduresmentioning

confidence: 99%

Modeling the flow behavior of a simulated municipal solid waste

Dai

Huang

Jiang

et al. 2015

Bull Eng Geol Environ

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Flow slides in the municipal solid waste (MSW) landfill are common geological disasters that have the potential to cause loss of life, destruction of property, and damage to the natural environment in the surrounding region. In this work, a mixture of peat, kaolin clay and quartz sand was used as a model test material to simulate MSW. A series of physical model tests on MSW simulant flows was carried out to capture the run-out behavior of the waste and analyze its mobility. The testing assembly consisted of a transparent model box, a steel frame and a highspeed camera. Flow failure was induced by lifting up a baffle to cause the MSW simulant to collapse and flow. Images of the flowing mass were taken by the high-speed camera. The series of images clearly displays the propagation of MSW simulant flows. The final profile of the MSW simulant and the shape of the deposition area were observed and measured. The run-out distances, final deposit shapes, flow depth, velocities and angle of reach showed significant variation between test configurations, indicating the strong influence of moisture content on overall mobility. The test results obtained can aid in the prediction of distal reach, flow depth and maximum velocity of solid waste following a landfill slope failure, which are necessary for hazard assessment and mitigation planning, and also to provide physical data for theoretical and numerical model verification.

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Section: Test Proceduresmentioning

confidence: 99%

Modeling the flow behavior of a simulated municipal solid waste

Dai

Huang

Jiang

et al. 2015

Bull Eng Geol Environ

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show abstract

“…The fractal dimension of sand particles may be an influential parameter and need further investigation [24]. The specimens were constituted by the water pluviation because this method can ensure the uniformity of relative density of specimens [25]. Then, the specimens were saturated by applying back pressure of 500 kPa until the B value surpassed 0.95.…”

Section: Sand Properties and Experiments Conditionsmentioning

confidence: 99%

Evaluation of Liquefaction Potential in Saturated Sand under Different Drainage Boundary Conditions—An Energy Approach

Yao

Wang

Liu

et al. 2019

JMSE

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Drainage conditions are supposed to have significant influence on sand liquefaction behavior. An infiltration device was utilized in cyclic triaxial tests to reproduce different drainage conditions by altering dry density of the within silt. Permeability coefficient ratio (kp) was utilized for quantifying the drainage boundary effect. Cyclic triaxial tests were conducted on saturated Fujian standard sand samples. Test results were used to evaluate the liquefaction potential by using the energy approach. It can be concluded that, if kp increases slightly bigger than zero, excess pore water pressure (EPWP) will respond more fiercely, and the dissipated energy that triggers sand liquefaction will be less. By considering kp, an energy-based database was built by taking kp into consideration and different neural network (NN) models were constructed to predict liquefaction potential by energy approaches accurately under different drainage boundary conditions. It was suggested that the neuro-fuzzy (NF)-based NN model has more satisfactory performance.

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“…The smaller the flow area and the sand flow rate, the denser the reconstituted sand sample (Lagioia et al 2006). The void ratio e of the tested sample is controlled by changing the width of the sand curtain.…”

Section: -9mentioning

confidence: 99%

Submarine Mass Movements and their Consequences

2016

Advances in Natural and Technological Hazards Research

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Air, Water and Vacuum Pluviation of Sand Specimens for the Triaxial Apparatus

Cited by 51 publications

References 11 publications

Modeling the flow behavior of a simulated municipal solid waste

Modeling the flow behavior of a simulated municipal solid waste

Evaluation of Liquefaction Potential in Saturated Sand under Different Drainage Boundary Conditions—An Energy Approach

Submarine Mass Movements and their Consequences

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