Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 31 for “"ground improvement"”.
-
Ground Improvement for Liquefaction Mitigation at Existing Highway Bridges
The feasibility of using ground improvement at existing highway bridges to mitigate the risk of earthquake-induced liquefaction damage has been studied. The factors and phenomena governing the performance of the improved ground were identified and clarified. Potential analytical methods for …
-
Ground improvement using vacuum preloading together with prefabricated vertical drains
… the lateral displacements are maximum at the ground surface and reduce with depth. Moreover, the magnitude of lateral displacements (at the boundary of treatment area) is independent of the width of treatment area as well as the depth of penetration of vertical drains; therefore, no specific …
-
A study on ground improvement using a combination of stone and concrete columns
Stone column is a cost-effective ground improvement technique that is typically employed for low-rise buildings and road embankments. This technique mainly uses naturally occurring materials as its load transferring medium. However, stone columns have some constraints because of the loose …
-
Development of a volumetric strain influence ground improvement prediction model with special reference to impact compaction
… a simple prediction model for the profile of improvement in the ground, using surface settlement as the main input parameter. The model is based on the information reviewed, observation of field data and a static numerical analysis. For simplicity sake, no attempt is made to predict the energy …
-
Ground improvement using PET bottle waste as a potential reinforcement material for granular columns: an experimental approach
Out of the many ground improvement methods aimed at ameliorating the weak engineering properties of certain soils, granular columns are often preferred due to their cost effectiveness and environment friendliness. Despite their high usage in other countries, this technology remains rather unpopular …
-
A remedial approach to stabilize a deep excavation in Singapore
Ground improvement methods are commonly adopted in deep excavation to minimize wall deflection, wall bending moment and strut force. In this thesis a different approach to the application of ground improvement techniques is analyzed in the form of a parametric study developed with the use of a …
-
A numerical study of the suitability of rigid inclusion ground reinforcement beneath caisson quay walls
… over other stiffening columns commonly used for ground reinforcement in port expansion projects. Their mechanical properties allow construction to unrestricted heights at any construction rate and, in theory, RIs can be applied to all soil types. Additionally the locations of many ports coincide …
-
The Impact of Rolling Dynamic Compaction
… as it is towed, causing it to fall to the ground and compact it dynamically. There is currently little guidance available for geotechnical practitioners regarding the depths of improvement that are possible in varying soil conditions. Current practice dictates that practitioners rely on …
-
DEM Study of a Single Stone Column in a Clayey Stratum
<p>Aggregate piers are an alternative ground improvement technique used for improving the bearing capacity and reducing the total and differential settlement of foundations supported on compressible soils. The piers are composed of a series of vibrationally compacted aggregate lifts from a desired …
-
Energy-Based Evaluation and Remediation of Liquefiable Soils
Remedial ground densification is commonly used to reduce the liquefaction susceptibility of loose, saturated sand deposits, wherein controlled liquefaction is typically induced as the first step in the densification process. Assuming that the extent of induced liquefaction is approximately equal to …
-
Pattern formation in fluid injection into dense granular media
… environmental and petroleum engineering such as ground improvement, environmental remediation and reservoir stimulation.
-
Permanence and Life Cycle Performance of Biocementation Soil Improvement
… beneficial alternative to conventional ground improvement methods, which have traditionally relied on energy-intensive interventions. Through nearly two decades of research, a wide array of geotechnical applications for this process have been explored ranging from liquefaction mitigation …
-
The performance of polyurethane grout to stabilise hemic peat
Peat has always considered as a challenging ground for any form of construction due to its engineering characteristics such as high short-term settlement, prolonged long�term post construction settlement and high natural moisture content exceedingly more than 100%. Numerous construction materials …
-
Passive Site Remediation for Mitigation of Liquefaction Risk
… to the target location using the natural groundwater flow. The purpose of this research was to establish the feasibility of passive site remediation through identification of stabilizing materials, a study of how to design or adapt groundwater flow patterns to deliver the stabilizers to …
-
Stability of Embankments Founded on Soft Soil Improved with Deep-Mixing-Method Columns
Foundations constructed by the deep mixing method have been used to successfully support embankments, structures, and excavations in Japan, Scandinavia, the U.S., and other countries. The current state of practice is that design is based on deterministic analyses of settlement and stability, even …
-
Novel methods for monitoring grout penetration in hard rock
Grouting has been used in ground engineering since the early 19th century. Grouts are injected into the ground both for the creation of hydraulic barriers and for ensuring ground stability. Example applications are dam sealing, underground isolation of waste disposal sites, stabilisation of mine …
-
A Numerical Investigation of the Seismic Response of the Aggregate Pier Foundation System
… of the aggregate pier and the improved ground were identified and clarified. The key factors affecting the performance of the aggregate pier include soil density, stiffness modulus, and drainage capacity. The improved ground is influenced by soil stratification, soil properties, pore …
-
Kinetics of microfine cement filtration during constant rate permeation through sands
Permeation grouting is a cost-effective ground improvement technique that involves the injection of grout into the voids of geological material to improve the engineering properties by reducing the permeability and/or increasing the strength. Permeation grouting can be performed with either …
-
Influence of sand friction angle, grout stiffness, and confinement on the behavior of acrylamide and sodium silicate grouted sand
… is a commonly used option within the plethora of ground improvement methods. Yet, the practice of grouting relies heavily on empirically developed models to estimate strength and predict grouted soil behavior. Collectively, these models consider many factors including soil and grout properties, …
-
Influence of Curing Temperature on Strength of Cement-treated Soil and Investigation of Optimum Mix Design for the Wet Method of Deep Mixing
… Mixing Method (DMM) is a widely used, in-situ ground improvement technique that modifies and improves the engineering properties of soil by blending the soil with a cementitious binder. Laboratory specimens were prepared to represent soil improved by the wet method of deep mixing, in which the …
Page 1 of 2