Ground Improvement in the 21st Century: A Comprehensive Web-Based Information System

Schaefer, Vernon R.; Mitchell, James K.; Berg, Ryan R.; Filz, George M.; Douglas, S. Caleb

doi:10.1061/9780784412138.0011

Cited by 18 publications

(9 citation statements)

References 4 publications

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“…These factors include understanding the functions of the method, utilisation of several selection criteria, the use of appropriate design procedures, implementation of the right methods for quality control and quality assurance, and consideration of all relevant cost components and environmental factors. Schaefer et al (2012) describe a new comprehensive, web-based ground improvement information and guidance system that was developed after summarising and organising knowledge for 46 ground improvement and geoconstruction technologies. The system can be used to learn about and compare the technologies, to obtain design, quality assurance/quality control, specification, cost, and construction guidance, and to facilitate informed decision making.…”

Section: Selection Of Ground Improvementmentioning

confidence: 99%

Addressing some current challenges in ground improvement

Mitchell

Kelly

2013

Proceedings of the Institution of Civil Engineers - Ground Impr

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Ground improvement will be critically important in future geotechnical practice to achieve reductions in quantities of material used, reduction in carbon footprint, prevention and mitigation of natural disasters, treatment and recycling of industrial wastes, remediation of polluted soils, development of brownfield sites and maintenance and rehabilitation of existing structures. Challenges exist in providing cost-effective sustainable ground improvement under current economic conditions. These issues are addressed under categories of reduce, reuse and recycle in the first part of the paper. Selection processes for ground improvement methodologies, improved analysis, knowledge of long-term performance and understanding of effects of variability are required to develop more efficient designs. These issues are addressed in the second part of the paper.

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Section: Selection Of Ground Improvementmentioning

confidence: 99%

Addressing some current challenges in ground improvement

Mitchell

Kelly

2013

Proceedings of the Institution of Civil Engineers - Ground Impr

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“…The use of lineament density, lithotype, and slope parameters to develop rupture susceptibility research was effective for this work, considering the possibility of being analyzed using remote sensing techniques as well as its great relevance in previous studies focused on this theme (e.g., Cruz 1974, Pradel et al 1993, Bigarella 2003, Pradhan et al 2006, Schaefer et al 2012.…”

Section: Landslide Characterization Using Satellite Images Geotechnic...mentioning

confidence: 99%

Remote sensing applied to geological, structural, and mass movements characterization in the connection between Curral Homocline and Moeda Syncline, Quadrilátero Ferrífero Region, Brazil

Roncato¹,

Martins²,

Silva³

2023

Braz. J. Geol.

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Mass movements naturally occurring along slopes, especially after heavy rains, cause heavy losses of materials and life and affect highways, pipelines, and bridges, among other structures. Among the most common mass movements, landslides and subsequent mass flows especially stand out. Remote sensing and geoprocessing techniques are useful tools for geological and geotechnical analysis, here applied to characterization of mass movements from the analysis of the influence of slopes, lineaments or fractures, and geological-geotechnical at the junction of the Curral homocline and the Moeda syncline, Quadrilátero Ferrífero, Southeast Brazil. The area consists of Archean granitic-gneissic basement and the greenstone belt sequence of the Rio das Velhas Supergroup with Proterozoic metasedimentary rocks of the Minas Supergroup covering these two older successions. Based on satellite images, a preliminary map of lineaments was created, and fractures were grouped according to their direction before being rasterized. Each lineament group was associated with a previously known geological and/or structural feature. Geological units mapped in the area were numerically classified according to their mass movement susceptibility and related geotechnical units. Using a Shuttle Radar Topography Mission (SRTM) image, a terrain slope raster was generated. The objective was to obtain a raster indicating low and high probabilities of mass movements. Four sets of lineaments were identified: the first set associated with the northeast strike stratification of the rocks of the Moeda Formation; the second set related to eastward-trending warp axis lineations; the third set related to the southeast trend of stretch lineaments or mafic dykes directions; and the fourth set evidently associated with the watershed pattern of the Curral Range crest, perpendicular to the strike of the rocks in the area. Simulations with different combinations of parameters produced eight scenarios were generated were constructed to classify the area as to its susceptibility to rupture through changes in slope, lithotype, and lineament density; the first four (1 to 4) were classified by using the slope percentage raster without interval reclassification, so its values in the cartographic algebra were not grouped. The last for (5 to 8), consider the slope percentage classified. This methodology successfully combines mathematical models for predicting mass movements and determining areas in the urban landscape most susceptible to these phenomena. As such, it comprises a useful tool for government planning of preventative actions for areas of high risk.

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“…The advancement of ground improvement methods, products, systems, and engineering tools has resulted in tremendous knowledge. (Schaefer, et al, 2012). Integrating available knowledge with several problem-specific and site-specific elements is required to select the most effective ground improvement technique.…”

Section: Introductionmentioning

confidence: 99%

Stiffness Characteristics of Pile Models for Cement Improving Sandy Soil by Low-Pressure Injection Laboratory Setup

Hussein

Ahmed²

2023

jcoeng

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Soil improvement has developed as a realistic solution for enhancing soil properties so that structures can be constructed to meet project engineering requirements due to the limited availability of construction land in urban centers. The jet grouting method for soil improvement is a novel geotechnical alternative for problematic soils for which conventional foundation designs cannot provide acceptable and lasting solutions. The paper's methodology was based on constructing pile models using a low-pressure injection laboratory setup built and made locally to simulate the operation of field equipment. The setup design was based on previous research that systematically conducted unconfined compression testing (U.C.Ts.). The soil improvement techniques were investigated by injecting a low-pressure mixture of water and ordinary Portland cement (O.P.C.) with (0.8, 1, and 1.3) W/C ratios. The study revealed the relationship between pile model samples (U.C.Ts.) and W/C ratios. It also showed that the pile model samples' (U.C.Ts.) result decreased from 14 to 12 to 10 MPa, respectively, with an increase in W/C ratios from 0.8 to 1 and 1.3, respectively. Furthermore, the stiffness characteristics of a jet grouting column were calculated based on Mohr's Circles theory, and numerous theoretical approaches obtained the consequences of tensile strength.

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Ground Improvement in the 21st Century: A Comprehensive Web-Based Information System

Cited by 18 publications

References 4 publications

Addressing some current challenges in ground improvement

Addressing some current challenges in ground improvement

Remote sensing applied to geological, structural, and mass movements characterization in the connection between Curral Homocline and Moeda Syncline, Quadrilátero Ferrífero Region, Brazil

Stiffness Characteristics of Pile Models for Cement Improving Sandy Soil by Low-Pressure Injection Laboratory Setup

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