Relevant bibliographies by topics / Jet grouting

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Jet grouting'

Author: Grafiati
Published: 4 June 2021
Last updated: 31 May 2022

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Journal articles on the topic "Jet grouting"

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Krysan, Volodymyr, and Vitaliy Krysan. "Jet and jet-mixing grouting." ACADEMIC JOURNAL Series: Industrial Machine Building, Civil Engineering 2, no. 51 (October 12, 2018): 68–72. http://dx.doi.org/10.26906/znp.2018.51.1294.

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Analysis of ground cement elements production technologies by jet, jet mixing and mixing technologies with the consumption of various quantities of cement needed for their manufacture is carried out, their applicability is determined. It has been defined that design of bases and building bases grouted by ground-cement elements on weak and subsidence soils requires scientific approach. Mixing and jet-mixing technologies are more cost-effective ones and do not require pulp utilization; the material (ground cement) obtained during soils jet grouting for determining change in its characteristics in time and under the influence of various factors should be studied.
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Poh, Teoh Yaw, and Ing Hieng Wong. "A field trial of jet-grouting in marine clay." Canadian Geotechnical Journal 38, no. 2 (April 1, 2001): 338–48. http://dx.doi.org/10.1139/t00-093.

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The basement excavation of the Singapore Post Center involved extensive jet-grouting to improve the soft marine clay present within the excavation. The treated soil mass, with much improved strength and deformation characteristics, was intended to act as an internal strut below the bottom of the excavation level, reducing movements caused by the basement excavation. This paper presents the performance of a well-instrumented field jet-grouting trial during the construction of the building basement. Results of monitoring suggest that the jet-grouting trial caused the retaining diaphragm walls and the adjacent soils immediately behind and at some distance away from the walls to move away from the jet-grouted area. The maximum free field lateral soil movements in the excavation side of the jet-grouted mass were much larger than the corresponding lateral movements behind the wall. The results suggest that the diaphragm wall provided considerable restraint, thereby reducing the lateral movements of the soil behind the wall induced by the jet-grouting. Bending moments were induced in the diaphragm walls due to the jet-grouting work. The jet-grouting also caused some increase in the lateral earth pressure and the piezometric levels.Key words: jet-grouting, ground improvement, diaphragm wall, ground movements.
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COOMBER, DB, and AL BELL. "INFORMAL DISCUSSION. JET GROUTING." Proceedings of the Institution of Civil Engineers 80, no. 6 (December 1986): 1661–64. http://dx.doi.org/10.1680/iicep.1986.541.

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Morey, J., and R. R. W. Harris. "Jet grouting in construction." Geological Society, London, Engineering Geology Special Publications 10, no. 1 (1995): 105–14. http://dx.doi.org/10.1144/gsl.eng.1995.010.01.08.

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Al-Kinani, Ali M., and Mahmood D. Ahmed. "Comparison of Single and Group Jet Grouting Columns Capacity Based on Field Load Test and Theoretical Methods." Civil Engineering Journal 5, no. 6 (June 23, 2019): 1353–66. http://dx.doi.org/10.28991/cej-2019-03091337.

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The evaluation of axial capacity of jet grouted soil cement columns in soft soil is a complicated issue because it depends according to the number of factors such as, soil type, influence mixture between soil and grouting materials, nozzle jet energy, jet grouting and water flow rate, rotation and lifting speed. These parameters related to the type of jet grouting methods (single, double and triple system). Most methods of design the bearing capacity of the jet-grouting column based on experience. Therefore, some designer calculates the bearing capacity of the jet grouting column based on jet grout section capacity. In this paper, different theoretical methods have been used to estimate of the jet grouting soil-cement capacity, such as Poulos and Davis, 1980 methods and then their comparison with the pile load test calculations based on the quick pile load test as presented in ASTM-D1143-07. Therefore, the study describes a prototype test single and group jet grout soil-cement models of arrangement (1*1, 1*2 and 2*2) for total length to diameter ratios (L/D) is 13.33 and clear spacing three times of diameter has been constructed in soft clayey soils in the right bank of the Euphrates River, at Al- Nasiriyah city. As a result, the theoretical method for estimation the bearing capacity gives unfaithful values for the single and group jet grout column compared to the load- settlement calculations obtained from field pile load test data. On the other hand, the Hansen’s 90% and Butler and Hoy’s given closer results to each other and may be considered faithful interpretation methods to compute the bearing capacity of single and group jet grouting columns.
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Heidari, Mahdi, and Fulvio Tonon. "Ground reaction curve for tunnels with jet grouting umbrellas considering jet grouting hardening." International Journal of Rock Mechanics and Mining Sciences 76 (June 2015): 200–208. http://dx.doi.org/10.1016/j.ijrmms.2015.03.021.

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Wang, Xiaojun, Zhipeng Mao, and Wendi Wang. "Digital Evaluation of Vertical Compressive Bearing Capacity for Jet Grouting Pile-Mini Steel Pipe Pile Composite Foundation." Mathematical Problems in Engineering 2022 (May 11, 2022): 1–9. http://dx.doi.org/10.1155/2022/8499597.

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The jet grouting pile-mini steel pipe pile in soft soil area is composed of the jet grouting pile and the mini steel pipe pile. Through the analysis of the stress mode of the composite foundation under the overall compression of the pile top, the hypothetical diagram and calculation equation of the interfacial friction resistance distribution of the composite foundation are put forward. Thus, the calculation equation of the axial force of the mini steel pipe pile and the jet grouting pile is deduced, and the axial force distribution diagram of the mini steel pipe pile and the jet grouting pile in the composite foundation is defined. The vertical compression composite foundation in the field was selected for bearing capacity test and calculation and comparative analysis, and the relative error was 3%. Therefore, the stress mode and calculation method of the jet grouting pile-mini steel pipe pile proposed in this paper can meet the needs of engineering design and popularization and application of the composite foundation.
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Liu, Gang Yu, and Bing Long Wang. "Study on the Effect of Jet Grouting Pile Reinforcing Soft Soil Subgrade." Advanced Materials Research 594-597 (November 2012): 1420–28. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.1420.

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Composite foundation is commonly used to control the soft soil subgrade settlement. Considering that post-construction settlement of high speed railway is strictly controlled, it’s supposed to use jet grouting pile to strengthen the existed composite foundation and it’s necessary to analyse the effectiveness. Take a line as an example, analyse embankment settlement regularity of the original design mixing pile reinforcement and jet grouting pile reinforcement, evaluate the effect of the jet grouting pile reinforcement. The results show that the jet grouting pile reinforcement on the basis of original design does not have obvious effect on the embankment surface and ground surface settlement control, but effectively controls horizontal displacement at toe of slope and improves the foundation stability.
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Wang, Shu Li, Man Gen Mu, Dun Wu Chen, and Geng Ren. "Field Design of Jet Grouting Parameters on Soilcrete Columns." Applied Mechanics and Materials 170-173 (May 2012): 3068–71. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.3068.

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Method of jet grouting has become one of the ground improvement technologies used to address seepage concerns and to provide strength improvement of soils. The soilcrete columns can be also used to form seepage vertical cut-off walls from a series of continuous and interconnected vertical columns in deep pit. If the native soil is not completely mixed with slurry, the resulting columns will have soil inclusions which can increase the permeability of the column or fail barrier to water flow. Specifications of soilcrete columns that are achieved from the jet grouting procedures from the diameter and strength aspect depend on jet grouting parameters such as grout pressure, lifting speed, number and diameter of nozzles and c/w ratio and specifications of local soil. Different soil must use different jet grouting parameters.
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Modoni, G., P. Croce, and L. Mongiovì. "Theoretical modelling of jet grouting." Géotechnique 56, no. 5 (June 2006): 335–47. http://dx.doi.org/10.1680/geot.2006.56.5.335.

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Dissertations / Theses on the topic "Jet grouting"

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Ji, Heng. "Physical modelling of jet grouting process." Thesis, University of Cambridge, 2008. https://www.repository.cam.ac.uk/handle/1810/252114.

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Tank experiment is carried out to investigate the mechanism involved in jet grouting. The observation shows the existence of both seepage and erosion at the intersurface between the injected fluid and the intact soil. The movement of the erosion front, which defines the radius of influence by the jet, can be best described by an exponential function. The influences of various operating parameters are studied, which agree with field observations. The pore water pressure profile measured during the experiment is closely linked with the progress of the erosion front. The pressure increases with the erosion distance, which is associated with the pressure required to drive the spoil back to the surface. A new model is constructed to estimate the ultimate cutting distance by the jet. The proposed model takes the spoil backflow into account in addition to the injected fluid/soil interaction. The jet behaviour is derived from the hydrodynamic characteristics of submerged jet. Based on the jet grouting mechanism, the failure of soil is checked in terms of the horizontal effective stress. The new model gives a more accurate estimation comparing to current models that only consider the soil resistance against the jet action. The new model is developed to cover jet grouting cases using single fluid and double fluid jet grouting systems.
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Ho, Chu Eu. "Turbulent fluid jet excavation in cohesive soil : with particular application to jet grouting." Thesis, Massachusetts Institute of Technology, 2005. http://hdl.handle.net/1721.1/32416.

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Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2005.
Includes bibliographical references (p. 267-271).
This thesis reviews the jet grouting methodology, and the current state of practice and research. Current methods of prediction of jet grout diameters are highly empirical and site specific, and do not take into account the jet hydrodynamics and soil properties explicitly. A rational model to describe the jet excavation mechanism for cohesive soil is presented in this thesis, with the aim of providing an improved prediction tool that can be used in jetting design. The model is based on the assumption that the velocity distribution in the cutting jet is equivalent to that of a free jet with boundaries corresponding to the dimensions of the cavity excavated in the ground. The shape of the cavity formed depends on the erosional properties of the soil and jet expansion is limited by the resistance at the jet-soil interface. It is hypothesized that the shape of the cavity excavated follows the locus of the jet radius satisfying the condition of constant wall shear stress. The model predicts that the limit of jet penetration is reached when the dynamic pressure at the jet tip becomes equal to the ultimate soil bearing resistance. The model was validated by laboratory jetting tests, using soil specimens manufactured from powdered kaolin clay, cement and water. Cement-soil ratios (CSR) of 2.5 to 7.5% were used to produce specimens with undrained shear strength (Su) ranging from 5 to 45 kPa. A period of at least 3 days was allowed for the specimen to cure in the test tank before jetting was commenced. The tests were conducted using different nozzle diameters, jetting pressures, rotation speeds and soil strengths. The specimens were exhumed after completion of each test to map the shape of the cuts excavated.
(cont.) The insitu shear strength of the specimens was obtained using torvane and laboratory vane shear tests. Samples were also obtained for density and moisture content measurements. The experimental results showed that the measured and predicted shapes of cut were in reasonable agreement, with the predicted jet width being conservative in most cases. A strong linear correlation was found between jet penetration, nozzle diameter, nozzle pressure difference and soil bearing capacity. It was found that a bearing capacity coefficient (Sc) of 2.4 was applicable for failure at the jet tip. This value of Sc was corroborated by field trial data. Wall shear stresses back-calculated from the experiments were much smaller than the residual soil strengths obtained from laboratory vane shear tests and correspond more closely to the erosional strength of clays. The model enables the lift step of the jetting monitor to be computed directly. The present research demonstrated that valuable information regarding the excavation mechanism can be obtained by careful examination of the actual cut in a soil formed by a jet. It is recommended that further work be done to investigate the erosional process at the jet-soil interface and the properties of the grouted soil, using higher jetting pressures and soils with higher shear strengths. The effect of withdrawal rate on column formation and uniformity of mix is of interest. The brittleness of the grouted product and its effect on strength and deformation behavior is also important.
Chu Eu Ho.
Sc.D.
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Rodrigues, Daniel Filipe Neves. "Jet Grouting - controlo de qualidade em terrenos do miocénio de Lisboa." Master's thesis, FCT - UNL, 2009. http://hdl.handle.net/10362/1951.

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Dissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para obtenção do grau de Mestre em Engenharia Geológica (Geotecnia)
As técnicas de melhoramento de terrenos têm vindo a ser desenvolvidas e aplicadas com maior frequência no âmbito da crescente realização de obras de engenharia em locais de fracas características geotécnicas. A presente dissertação versa sobre uma dessas técnicas, o jet grouting, e aborda os seus aspectos mais relevantes. Neste contexto, efectua-se uma breve referência às aplicações mais frequentes da técnica, dos respectivos sistemas, das variáveis que a influenciam, bem como dos procedimentos executivos e equipamentos utilizados. Referem-se ainda as vantagens, desvantagens e condicionalismos do jet. É dado especial ênfase ao controlo de qualidade no contexto do processo executivo. A dissertação prossegue com a apresentação de um caso de obra, descrevendo-se o acompanhamento dos trabalhos de controlo de qualidade da execução de colunas de jet grouting, em terrenos miocénicos, no Metropolitano de Lisboa, na construção de um trecho, em túnel, do prolongamento da Linha Vermelha, entre a estação do Oriente e o Aeroporto da Portela. Finalmente, sumarizam-se as principais conclusões e sugerem-se alguns trabalhos futuros de investigação nesta temática.
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Adsero, Matthew E. "Effect of jet grouting on the lateral resistance of soil surrounding driven-pile foundations /." Diss., CLICK HERE for online access, 2008. http://contentdm.lib.byu.edu/ETD/image/etd2381.pdf.

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Adsero, Matthew E. "Impact of Jet Grouting on the Lateral Strength of Soil Surrounding Driven Pile Foundations." BYU ScholarsArchive, 2008. https://scholarsarchive.byu.edu/etd/1378.

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Jet grouting was used to strengthen the soft soil surrounding the piles and the pile cap of two full-scale driven pile foundations. Soilcrete columns, created by jet grouting, were placed underneath the pile cap and surrounding the piles of the first foundation. Two rows of soilcrete columns were placed around the perimeter of one-side of the second. All of the jet grouting took place after construction of the pile caps. Laboratory testing of the soilcrete slurry showed the columns as having a design unconfined compressive strength of 550-650 psi, compared with the native soil strength of only 6-8 psi (850-1150 psf). Lateral loading of the pile foundation was then performed on these foundations. The results of this test were compared with a similar test performed on the same foundations under native soil conditions. The total lateral capacity of the pile foundation treated underneath the pile cap was increased by 500 kips, which equals an increase of 175%. The total lateral capacity of the pile foundation treated adjacent to the pile cap was 150%. Results of testing suggest that each of the jet-grout treated zones displaced as a rigid block. A majority of the increased lateral resistance came from the passive soil resistance acting on the face of the blocks and the adhesive soil resistance acting on the sides and bottom of the block as it displaced through the native soil. The remaining soil resistance, not accounted for by the passive and adhesive soil resistance, can potentially be attributed to increased soil pile interaction, which is predicted from the decrease in pile head rotation during loading following soil treatment.
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Černiavska, Irena. "Pagrindų injekcijos metodų naudojimo pastatų rekonstrukcijai tyrimai." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2008. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2008~D_20080626_161237-65581.

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Baigiamajame magistro darbe apžvelgiami pamatų ir pagrindų stiprinimo būdai. Laboratorijoje atliktas sustiprinto natrio silikato tirpalu grunto tyrimas, nustatyta jo mechaninių savybių priklausomybė nuo bandinių kietėjimo laiko. Nagrinėjamas pagrindų injekcijos metodų naudojimas pastatų rekonstrukcijai. Taikant COSMOS programinį paketą įražos apskaičiuotos šiais atvėjais: 1. Sudarius erdvinį grunto masyvo modelį, kai gruntas po pastato pamatu nesustiprintas; 2. Kai gruntas sustiprintas porų injekcijos (angl. Grouting) metodu; 3. Kai gruntas sustiprintas srautinės injekcijos (angl. Jet-grouting) metodu. Palyginamas įtempių sklidimas ir poslinkių kaita grunte (smėlis). Gautų atsakymų analizavimas.
Foundations and grounds strengthening methods were reviewed in this Master thesis work. The test of soil strengthened with sodium silicate solution was accmlished in the laboratory. Dependence of soil mechanical characteristics from samples solidification time was ascertained. Usage of grounds injection menthods for reconstruction of buildings was investigated. Applying COSMOS program package the efforts were estimated in such cases: 1. forming the dimensional model of soil solid when the soil under the foundations of the building is not strengthened; 2. when the soil is sthrengthened using the Grounting method; 3. when the soil is strengthened using the Jet-grounting method. Spread of strains and vicissitude of shifts in the soil (sand) were compared. The analysis of obtained results was made.
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Carletto, Marcos Francisco Wosgrau. "Jet Grouting (sistema monofluido): um método teórico simplificado para a previsão do diâmetro das colunas." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/3/3145/tde-13102009-154059/.

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O jet grouting é uma das técnicas de tratamento de solos mais utilizadas em todo o mundo. Consiste em jatear uma calda de cimento a altíssima velocidade no subsolo, com ou sem a adição de água e/ou ar comprimido. Os fluidos são injetados através de minúsculos bicos posicionados na extremidade de uma composição especial de hastes, que giram à velocidade constante enquanto sobem lentamente em direção à superfície do terreno. O jato remove e mistura o solo, produzindo um corpo consolidado de formato aproximadamente cilíndrico (a coluna de jet grouting). Variando os parâmetros operacionais (pressão de bombeamento, quantidade e diâmetro dos bicos, velocidade de extração das hastes, relação água/cimento da calda) e em função do tipo de solo, podem ser obtidas colunas de diâmetros variáveis dentro de um amplo intervalo. Na busca do diâmetro desejado, a escolha dos parâmetros de tratamento é feita atualmente com base em regras empíricas nem sempre pertinentes, causando muitas vezes o fracasso do tratamento ou, ainda, tornando-o excessivamente oneroso. Esta tese de doutorado apresenta um método simplificado para a previsão do diâmetro das colunas de jet grouting (sistema monofluido). Conjugando a análise racional do fenômeno físico de interação jatosolo (Modoni et al., 2006) à facilidade de aplicação característica dos métodos empíricos, propõe-se uma ferramenta ágil para a escolha da combinação mais adequada dos parâmetros de tratamento.
Jet grouting is one of the most popular ground improvement techniques all over the world. The method is based on high-speed grouting of water-cement mixtures and/or other fluids (air, water) into the subsoil. The fluids are injected through small diameter nozzles placed on a grout pipe, which is continuously rotated at a constant rate and slowly raised towards the ground surface. The jet removes and mixes the soil, producing a cemented body of quasi-cylindrical shape (the jet grouting column). Varying the operational parameters (grout pressure, number and diameter of the nozzles, monitor lifting rate, water-cement ratio of the grout) and as a function of the soil type, columns of variable diameters can be obtained in a wide interval. Currently, in search of the required diameter, the choice of the operational parameters is done on the basis of empirical rules not always relevant, causing very often the failure of the treatment or making it excessively onerous. This thesis presents a simplificated method for the prediction of the column diameter (single fluid system). Conjugating the rational analysis of the physical phenomenon of jetsoil interaction (Modoni et al., 2006) to the typical easiness of empirical methods application, an agile tool is proposed for the choice of the most appropriate combination of the operational parameters.
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Brinck, Mårten, and Karl Stigenius. "Jet grouting as a method for sealing sheet pile excavations in Swedish conditions : A probabilistic approach." Thesis, KTH, Jord- och bergmekanik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-259693.

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Jet grouting is a groundimprovement method that creates cemented columns in the soil. The soil isinjected with different pressurized fluids, through the monitor, to replace andcement the soil, often with water cement grout. There are three different commonsystems for ejecting the fluids, the single, double and triple fluid system.The process is performed from the ground surface by drilling to desired depthand then withdrawing the monitor while rotating and ejecting and thus creatinga column. There are many applications for this technique. However, this thesisfocus on using jet grouted columns in formation to seal sheet pile excavationsfrom water.
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Coelho, Pedro. "Projecto e Observação de obras geotécnicas: Soluções de estabilização de taludes acomodando infraestruturas em exploração." Master's thesis, Academia Militar ; Instituto Superior Técnico, 2010. http://hdl.handle.net/10400.26/9775.

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Existem inúmeros tiposde estruturas de contenção e estabilização aplicadas em taludes rodoviários. Com a presente dissertação, pretende-se descrever os principaiscritérios e procedimentos inerentes à concepção e, consequente execução, de um projecto de contenção e estabilização distinto dos geralmente utilizados em território nacional, numa situação de escorregamento consumado. A complexidade de adopção de uma estrutura de contenção e estabilização face ao acontecimento mencionado e envolvida na necessidade de garantir a circulação rodoviária nas vias de circulação não atingidas pelo escorregamento, determinou a utilização de variadas soluções construtivas, empregando tecnologia moderna no domínioda geotecnia. O projecto em análise contempla essencialmente a execução de trabalhos de estabilização/tratamento do solo, de escavação, de aterro, de fundações profundas, de drenagem e de uma estrutura de contenção. As soluções utilizadas para a realização dos trabalhos referidos são diversificadas, incluindo tecnologia de jet grouting, microestacas, contenção recorrendo a big bags e execução de pavimento. Para além da descrição da campanha realizada, apresentam-se fundamentos teóricos necessários à compreensão das técnicas abordadas e realiza-se uma apreciação de carácter qualitativo às várias soluções adoptadas. Um projecto deste tipo deve garantir a máxima segurança nos mais variados parâmetros. Neste sentido, para além das medidas padrão utilizadas e da procura de soluções com um contributo indispensável para a segurança, foi adoptado um plano de instrumentação e observação, com recurso a vários instrumentos de monitorização. O dimensionamento de uma estrutura de contenção requer conhecimentos na área da mecânica dos solos. Deste modo, pretende-se elucidar o leitor acerca das teorias clássicas utilizadas no cálculo de impulsos, de modelos de colapso de maciços e da legislação utilizada num projecto geotécnico desta natureza.
Abstract There are several types of retaining and stabilization structures applied to road embankments. The objective of this study is to describe the main criteria and procedures inherent to the design and subsequent execution of a retaining and stabilization project, different from those that are generally adopted at a domestically level, on the case of a confirmed slipping embankment. The complexity associated with the employment of a retaining and stabilization structure in response to the aforementioned circumstance, in addition to the imperative assurance of safety conditions along the road travel routes that remain unaffected, determined the use of various constructive solutions and application of modern technology, predominantly within the field of geotechnical engineering. The project under review primarily considers processes of soil stabilization/treatment, excavation, backfilling, deep drainage and a retaining structure. The solutions adopted for the completion of these tasks are diverse, including jet grouting technology, micropiles, containment using big bags and the execution of pavement. As well as the description of the completed case study, theoretical foundations are explored in order to understand the discussed techniques. In addition tothis, a qualitative assessment is employed for the evaluation of the various adopted solutions. A project of this type should ensure maximum safety according to the most various criteria. For this reason instrumentation and observation plan, relying on the use of various monitoring instruments is employed over and above the use of standard procedures and search for solutions that make the necessary contributions to safety conditions. The design of a retaining structure requires expertise in the field of soil mechanics. Therefore, the intention is to provide the reader with a clear insight into the classical theories used in the calculation of impulses, massif collapse models and the legislation used in geotechnical designs of this nature.
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Skog, Axel. "Strukturella förbättringar av en markstabiliseringsmast." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-53553.

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This report has examined the possibilities of stiffening and strengthening a ground stabilization mast, in a way that a small production company can manufacture. The soil stabilization technique in question is Jet-Grouting also called injection drilling, which involves drilling to the desired depth and then letting high-pressure water jets mixed with filling mass to erode the surrounding soil mass and form pillars below the ground surface. The study intends to explore the possibility of placing a simplified model in the simulation program ANSYS that uses the finite element method (FEM) to obtain its results. The product development method described by Karl T. Ulrich and Steven D. Eppinger in the book "Product Design and Development" is then used to produce improvement proposals that will strengthen the mast. The purpose of this study was to identify the strength of a ground stabilization mast and then produce and present an improvement proposal, based on the rotation head that is now mounted on the ground stabilization mast. This rotary head is named "RH24X HP 67 TS" and is produced by Eurodrill, and it generates a maximum torque of 24 kNm. The simulations on the mast with the given torque resulted in the highest stress of 158 MPa to which the mast body was exposed to. With the design that the mast current design, it entails a 2.3 factor of safety, which is considered acceptable since the recommended factor of safety for this type of heavy machine is about 2 (Khan, et al., 2016). When the torque was increased to the limit of the mast, i.e., when the factor of safety is close to 1, it resulted in a maximum torque of 54 kNm. Mounting a rotary head with a torque of 54 kNm is therefore not recommended due to the low safety margin that it would entail. Market research has been done and the proposals presented in this study presents similar manufactures and series as of the current rotary head. The recommended rotary heads come from the Eurodrill X-series and are called "RH32X HP 67 TS" and it produces a maximum torque of 32 kNm, alternatively "RH 4300 HP 48 TSS" which produces a torque of 34 kNm. The improvement proposals presented in this report are developed by evaluating the results of the simulations performed and then identifying the weakest areas. Then, based on the product development method, generate a proposal that can stiffen and strengthen the ground stabilization mast. The improvement proposal on the cradle showed with the rotary head "RH24X HP 67 TS" a 4.8 factor of safety, compared to the current cradle which has a 2.6 factor of safety, it is almost a doubling in strength. A new design of trusses was presented and resulted in a 35% increase in rigidity without the need to add any new material. This means that by re-examining the structure of the truss you can strengthen and possibly check the rigidity of the mast, which among other things leads to better manoeuvrability without any real extra costs being needed.
Denna rapport har undersökt möjligheterna att styva och styrka upp en markstabiliseringsmast på ett sätt som ett mindre produktionsföretag klarar av att tillverka. Markstabiliseringstekniken i fråga är Jet-Grouting även kallad injiceringsborrning, som går ut på att man borrar till önskat djup för att sedan låta högtrycksvattenjetstrålar blandat med fyllnadsmassa erodera den kringliggande jordmassan och bilda pelare under markytan. Studien ämnar utforska möjligheten med att placera en förenklad modell i simuleringsprogrammet ANSYS som använder finit elementmetod (FEM) för att få fram sina resultat. Därefter används produktutvecklingsmetoden som beskrivs av Karl T. Ulrich och Steven D. Eppinger i boken ”Product Design and Development”, för att ta fram förbättringsförslag som ska styrka upp masten.   Studien har haft som syfte att ta reda på hållfastheten hos en markstabiliseringsmast och sedan ta fram och presentera ett förbättringsförslag, utifrån det rotationshuvud som nu är monterat på markstabiliseringsmasten. Detta rotationshuvud har benämningen ”RH24X HP 67 TS” och är producerad av Eurodrill och genererar ett maximalt vridmoment på 24 kNm. Simuleringarna på masten med det givna vridmomentet resulterade i den högsta spänningen på 158 MPa som mastkroppen utsattes för. Med det utförande som masten är idag medför det en 2,3 säkerhetsfaktor, vilket är anses vara acceptabelt eftersom den rekommenderade säkerhetsfaktorn för denna typ av tungmaskin ligger på cirka 2 (Khan, et al., 2016).  När man sedan ökade vridmomentet till mastens bristgräns, det vill säga när säkerhetsfaktorn tangerar 1, resulterade det i ett maximalt vridmoment på 54 kNm. Att montera ett rotationshuvud med ett vridmoment på 54 kNm är därför inte att rekommendera på grund av den låga säkerhetsmarginalen som det skulle innebära. Därför presenteras förslag på rotationshuvuden som masten kan klara av, genom en marknadsundersökning gjord på liknade tillverkare och serier som dagens rotationshuvud. De rotationshuvud som rekommenderas kommer från Eurodrill X-serie och heter ”RH32X HP 67 TS” och den producerar ett maximalt vridmoment på 32 kNm, alternativt ”RH 4300 HP 48 TSS” som producerar ett vridmoment på 34 kNm.  Förbättringsförslagen som presenteras i denna rapport är framtagna genom att utvärdera resultaten av de utförda simuleringarna och sedan identifiera de svagaste områdena. Därefter genereras förslag utifrån produktutvecklingsmetoden som kan styva och stärka upp markstabiliseringsmasten. Förbättringsförslaget på släden visade med rotationshuvudet ”RH24X HP 67 TS” en 4,8 säkerhetsfaktor, jämfört med den nuvarande släden som har en 2,6 säkerhetsfaktor vilket är nästan en fördubbling i hållfasthet. En ny design av fackverk presenterades och resulterade i 35 % ökad styvhet utan att behöva addera något nytt material. Det innebär att man genom att ompröva fackverkets struktur kan stärka och eventuellt kontrollera mastens styvhet, vilket bland annat leder till bättre manövrerbarhet utan några egentliga extra kostnader behövs.
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Books on the topic "Jet grouting"

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Jet Grouting Technology Design And Control. CRC Press, 2013.

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Modoni, Giuseppe, Alessandro Flora, and Paolo Croce. Jet Grouting: Technology, Design and Control. Taylor & Francis Group, 2017.

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Book chapters on the topic "Jet grouting"

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Zhang, Wengang, and Hanlong Liu. "Jet Grouting Slabs and Jet Grouting Piles." In Design of Deep Braced Excavation and Earth Retaining Systems Under Complex Built Environment, 239–65. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-5320-9_8.

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Manne, Akhila, P. V. S. R. Prasad, and Madan Kumar Annam. "Application of Jet Grouting for Geotechnical Challenges." In Lecture Notes in Civil Engineering, 565–77. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6090-3_41.

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Kamata, Toshiyuki, Naoya Kuze, Atsushi Shimamura, and Tsutomu Tsuchiya. "Study on repair and reinforcement for existing pile foundation using jet grouting." In Lecture Notes in Civil Engineering, 627–34. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-2184-3_81.

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Tran-Nguyen, Hoang-Hung, and Nhung H. D. Ly. "Quality Assessment of Field Soilcrete Created by Jet Grouting in the Mekong Delta." In Lecture Notes in Civil Engineering, 777–84. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5144-4_75.

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Tinoco, Joaquim, António Gomes Correia, and Paulo Cortez. "Using Data Mining Techniques to Predict Deformability Properties of Jet Grouting Laboratory Formulations over Time." In Progress in Artificial Intelligence, 491–505. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-24769-9_36.

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Tran-Nguyen, Hoang-Hung, and Chuong Hong Quach. "Jet Grouting Mitigating Settlement of Bridge Approaching Embankments of Tam Bang and Vam Dinh Bridges." In Lecture Notes in Civil Engineering, 736–45. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-6713-6_73.

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Tinoco, Joaquim, António Gomes Correia, and Paulo Cortez. "Application of Data Mining Techniques in the Estimation of Mechanical Properties of Jet Grouting Laboratory Formulations over Time." In Advances in Intelligent and Soft Computing, 283–92. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-20505-7_25.

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Yamauchi, Takahiro, Hiroaki Tezuka, and Yoshimichi Tsukamoto. "Development of Rational Soil Liquefaction Countermeasure Consisting of Lattice-Shaped Soil Improvement by Jet Grouting for Existing Housing Estates." In Geotechnical Hazards from Large Earthquakes and Heavy Rainfalls, 49–59. Tokyo: Springer Japan, 2016. http://dx.doi.org/10.1007/978-4-431-56205-4_5.

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"Introduction." In Jet Grouting, 1–8. CRC Press, 2014. http://dx.doi.org/10.1201/b16411-2.

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"Technology." In Jet Grouting, 9–26. CRC Press, 2014. http://dx.doi.org/10.1201/b16411-3.

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Conference papers on the topic "Jet grouting"

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Debost, Camille, Fabrice Mathieu, and Murray Yates. "Jet Grouting within Contaminated Land Fill." In Grouting 2017. Reston, VA: American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480809.014.

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Shibazaki, Mitsuhiro, Mitsuru Yokoo, and Hiroshi Yoshida. "Development Oversized Jet Grouting." In Third International Conference on Grouting and Ground Treatment. Reston, VA: American Society of Civil Engineers, 2003. http://dx.doi.org/10.1061/40663(2003)107.

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Flora, A., G. Modoni, P. Croce, M. Siepi, and C. Kummerer. "What Future for Jet Grouting? A European Perspective." In Grouting 2017. Reston, VA: American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480786.035.

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Niermann, Matthew J., Douglas R. Jenevein, and Stanley L. Worst. "Jet Grouting for Water Cutoff and Excavation Support." In Grouting 2017. Reston, VA: American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480809.013.

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St-Amour, Yves, Lucie Clatworthy, and Masoud Manzari. "Jet Grouting within Toronto’s Glacial Deposits, a Contractor’s Perspective." In Grouting 2017. Reston, VA: American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480809.015.

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Cavey, Joseph K., Kenneth Ivanetich, and Joseph A. Mann. "Specialty Jet Grouting and Deep Mixing for DC Clean Rivers." In Grouting 2017. Reston, VA: American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480809.043.

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Shinsaka, Takashi, Junichi Yamazaki, Yasuharu Nakanishi, and Kazuhito Komiya. "Development of the MultiFan-Shaped Jet Grouting Method of Ground Improvement." In Grouting 2017. Reston, VA: American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480809.001.

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Ganeshan, V., and Jee Yi. "Jet Grouting and Its Applications." In International Symposium on Ground Improvement Technologies and Case Histories. Singapore: Research Publishing Services, 2009. http://dx.doi.org/10.3850/gi104.

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Yoshida, Hiroshi. "Recent Developments in Jet Grouting." In Proceedings of the Fourth International Conference on Grouting and Deep Mixing. Reston, VA: American Society of Civil Engineers, 2012. http://dx.doi.org/10.1061/9780784412350.0130.

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Croce, Paolo, Giuseppe Modoni, and Giacomo Russo. "Jet-Grouting Performance in Tunnelling." In GeoSupport Conference 2004. Reston, VA: American Society of Civil Engineers, 2004. http://dx.doi.org/10.1061/40713(2004)78.

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Reports on the topic "Jet grouting"

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Jet-Grouting Constructed Laminar Diaphragms. Purdue University, 2007. http://dx.doi.org/10.5703/1288284315900.

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Extraction of Contaminated Soil Using High Pressure Jet Grouting. Purdue University, 2007. http://dx.doi.org/10.5703/1288284315902.

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