Auteur Buddhima Indraratna
Documents disponibles écrits par cet auteur (15)
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Laricar Dominic O. Trani, Auteur ; Buddhima Indraratna, Auteur |This paper presents an investigation into the seepage hydraulics of a layer of subballast filter subjected to cyclic loading in a fully saturated environment. A multilayer mathematical approach was used to predict the time-dependent permeability[...]
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Buddhima Indraratna, Auteur ; Cholachat Rujikiatkamjorn, Auteur ; Brook Ewers, Auteur |In Australia, very few rail tracks have been constructed directly on deep estuarine deposits. In recent years, Kooragang Island has become a major export terminal and most coal trains need to cross the main lines at Sandgate to enter Kooragang I[...]
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Cholachat Rujikiatkamjorn, Auteur ; Buddhima Indraratna, Auteur |A system of vertical drains with surcharge preloading is an effective method for promoting radial drainage and accelerated soil consolidation. This study presents a procedure for the design of vertical drains that significantly extends the previ[...]
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Buddhima Indraratna, Auteur ; Anass Attya, Auteur ; Cholachat Rujikiatkamjorn, Auteur |This study examines the effectiveness of a prefabricated vertical drain (PVD) installed in reconstituted soft clay, where a large cyclic triaxial device was used to simulate repeated loading representing a rail track environment. The experimenta[...]
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Buddhima Indraratna, Auteur ; Sanjay Nimbalkar, Auteur ; David Christie, Auteur |Understanding the complex mechanisms of stress transfer and strain accumulation in layers of track substructure under repeated wheel loading is essential to predict the desirable track maintenance cycle as well as the design of the new track. Va[...]
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Ashok K. Raut, Auteur ; Buddhima Indraratna, Auteur |In this technical note, the concept of constriction size in design is highlighted while elucidating some of the limitations of current professional guidelines that are only based on particle size ratios. The implications of the controlling const[...]
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Sanjay Nimbalkar, Auteur ; Buddhima Indraratna, Auteur ; David Christie, Auteur |Impact loads generated because of wheel and rail defects cause accelerated ballast breakage leading to adverse performance of ballasted rail tracks. In the present study, experimental and numerical investigations have been carried out to develop[...]
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Ali Ghandeharioon, Auteur ; Buddhima Indraratna, Auteur ; Cholachat Rujikiatkamjorn, Auteur |A series of large-scale laboratory experiments, along with numerical analyses, using the commercial finite-element software package, ABAQUS, were performed to investigate the installation of mandrel-driven prefabricated vertical drains (PVDs). T[...]
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Buddhima Indraratna, Auteur ; Thevaragavan Muttuvel, Auteur ; Hadi Khabbaz, Auteur |To evaluate the safety of embankment dams, it is necessary to estimate the erosion rate based on common geotechnical properties such as shear and tensile strength. However, the empirical expressions that are currently available in the literature[...]
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Buddhima Indraratna, Auteur ; Sudip Basack, Auteur ; Cholachat Rujikiatkamjorn, Auteur |Improvement of soft clay deposits by the installation of stone columns is one of the most popular techniques followed worldwide. The stone columns not only act as reinforcing material increasing the overall strength and stiffness of the compress[...]
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Buddhima Indraratna, Auteur ; Cholachat Rujikiatkamjorn, Auteur ; Jay Ameratunga, Auteur |During the past decade, the application of vacuum preloading for stabilizing soft coastal clay and other low-lying estuarine soils has become popular in Australia. The cost-effectiveness is a major factor in most projects in view of the signific[...]
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Buddhima Indraratna, Auteur ; Gyanendra Regmi, Auteur ; Long Duc Nghiem, Auteur |Contaminated groundwater resulting from pyrite oxidation of acid sulfate soils (ASSs) is a major environmental problem in coastal Australia. A column test was carried out for an extended period with recycled concrete to study the efficiency of t[...]
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Buddhima Indraratna, Auteur ; Thevaragavan Muttuvel, Auteur ; Hadi Khabbaz, Auteur |Chemical stabilization is an effective ground improvement technique for controlling erosion. Two stabilizers, lignosulfonate and cement, were used to study how effectively they could stabilize erodible silty sand collected from Wombeyan Caves, N[...]
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Laricar Dominic O. Trani, Auteur ; Buddhima Indraratna, Auteur |Gravimetric and volumetric sampling techniques are reliable for the measurement of porosity in fully saturated granular filters. However, both methods require a significant effort to gather and prepare samples, are time intensive to process, and[...]
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Rohan Walker, Auteur ; Buddhima Indraratna, Auteur ; Nagaratnam Sivakugan, Auteur |A new, easy to implement, solution to the consolidation of multilayered soil based on the spectral method is presented. Combined vertical and radial drainage under instantaneous or single ramp loading is considered, ignoring well resistance. Flo[...]
