Marcos Arroyo

Marcos Arroyo
Universitat Politècnica de Catalunya | UPC · Department of Civil and Environmental Engineering (DECA)

PhD

About

202
Publications
86,122
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2,172
Citations
Citations since 2016
113 Research Items
1737 Citations
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20162017201820192020202120220100200300400
20162017201820192020202120220100200300400
20162017201820192020202120220100200300400
Additional affiliations
January 2007 - present
Universitat Politècnica de Catalunya
Position
  • Professor (Associate)

Publications

Publications (202)
Chapter
Grouting is a technique used to improve the engineering properties of soils and rocks. Grouting techniques are classified under different criteria: injection method used, type of grout material injected, typical application, and the sequence of construction. The best-known criterion is the mode of entrance or admission of grout into the soil or roc...
Article
Full-text available
Dynamic Cone Penetration Tests (CPTu) profile offshore sediments by impact penetration. To exploit their results in full the measured data is converted to obtain a quasi-static equivalent profile. Dynamic CPTu conversion requires calibrated correction models. Calibration is currently done by using paired (i.e., very close) quasi-static and dynamic...
Conference Paper
Full-text available
The presence of potentially liquefiable deposits in tailing dams represents a serious hazard, as is now increasingly clear that liquefaction triggering may occur in unanticipated ways. For legacy dams in which this hazard is already present, intervention alternatives are sought to mitigate the associated risks of liquefaction failure. One interesti...
Conference Paper
Full-text available
Failures due to static liquefaction have been too frequent in tailings dams. Stress-deformation numerical analyses based on critical state theory are able to reproduce those failures and may be used to gain insight into the different factors involved. One factor that is sometimes believed to play a role in liquefaction triggering is tailings creep,...
Conference Paper
Full-text available
Cone Penetration Test (CPTu) and flat Dilatometer Test (DMT) are widely employed in-situ tests for ground unit profiling in terms of Soil Behavior Type Index IC and Material Index ID. CPTu provides a nearly continuous data profile with respect to DMT, making it more appealing for soil unit identification, leaving DMT data for qualitative comparison...
Article
In this work, we present a novel explicit time-integration algorithm for the coupled hydromechanical soil mechanics problems in a pseudo-static regime. After introducing the finite element discretization, the semi-discrete ordinary system of equations is integrated explicitly in time with the Runge-Kutta method. It is noted that this formulation is...
Conference Paper
We present a modified Rowe cell for the estimation of shear moduli of geomaterials. It uses transmitter and receiver bender elements on the same side of the sample (echo measurement), allows for the installation of multiple receivers, and offers stiff and flexible enclosures on its reflecting end.
Article
In permeation grouting, a fluid carrying a binder enters the soil voids under low pressure. The binder sets and cures in the ground, thereby creating a treated soil with larger strength and stiffness and reduced permeability. Permeation grouting is one of the oldest technologies in ground improvement, but also one with a fast pace of technological...
Chapter
Full-text available
Accurate estimates of soil unit weight are fundamental for correctly post process CPTu data and making use of Soil Behavior Type-based classification systems. Soil-specific and global regressions have been proposed for this purpose. However, soil-specific correlation might pose a problem of pertinence when applied at new sites. On the other hand, g...
Chapter
Full-text available
CPTu-based soil profiling has become a key component in the geotechnical design process. However, this is an interpretative process, affected by the inherent variability of soil properties, measurement noise and subjective heuristics. These are difficult to communicate to other interpreters or, even for the same interpreter, to transfer across prof...
Chapter
Full-text available
Static liquefaction of soils that have a brittle undrained response (hydraulic fills, mine tailings or sensitive clays) may lead to sudden failures of large consequence. Given the importance of undrained failure, obtaining precise estimates of peak and residual yield strength is important. The CPTu plays a major role in the geotechnical characteriz...
Technical Report
Full-text available
Computational Analyses of Dam I Failure at the Corrego de Feijao Mine in Brumadinho. Final Report for VALE SA, August 2021
Conference Paper
Full-text available
Penetration depth of Spudcan foundations for offshore mobile Jack-up rigs is typically predicted by considering a wished-in-place foundation at different depths and following traditional bearing capacity approaches. However, the large penetration depths involved, stress redistributions and the flow of the material around the spudcan are some exampl...
Conference Paper
Full-text available
Both static and dynamic penetration tests are widely used to conduct soil investigation practice. Particle crushability has been known to greatly affect the responses of penetration tests. On the other hand, the physical property of granular materials – surface roughness – exhibits considerable influence on crushability. The virtual calibration cha...
Article
Full-text available
An attractive approach to reduce the carbon footprint of deep soil mixing (DSM) is to replace Portland cement-based binders by geopolymers based on metakaolin. Safe design requires a good understanding of the mechanical and hydraulic properties of the improved ground but very little is known about metakaolin-soil mixtures. For instance, shrinkage d...
Conference Paper
Full-text available
Disturbance of specimens recovered by tube sampling from boreholes is an enduring relevant problem in geotechnical engineering. Practice has evolved slowly in this area, partly because the main research method applied, involving comparative field sampling and testing, remains strictly empirical. Theoretical approaches based on the strain path metho...
Conference Paper
Full-text available
RESUMEN: En Enero de 2019 en Brumadinho (Brasil) una presa de relaves mineros de gran tamaño colapsó en su totalidad de forma brusca, causando la muerte a 270 personas y una gran conmoción en la minería mundial. La rotura fue capturada en video por una cámara que permitió identificar rápidamente el modo de rotura como uno de licuación. La cuestión...
Conference Paper
The impact of the use of sand treated with Colloidal Silica (CS) on a model 80 m high-earthfill dam was assessed through numerical modelling. The hydro-mechanical properties of the CS-treated soil were taken from a previous laboratory study. Different strategies of treatment placement were studied, with increasing volumetric fractions of the dam be...
Article
Full-text available
The possibilities of the particle finite element method (PFEM) for modeling geotechnical problems are increasingly evident. PFEM is a numerical approach to solve large displacement and large strain continuum problems that are beyond the capabilities of classical finite element method (FEM). In PFEM, the computational domain is reconfigured for opti...
Conference Paper
Full-text available
A recently proposed DEM model for materials with rough crushable grains (Zhang et al. 2021; Ciantia et al. 2015; Otsubo et al. 2017) is here employed to examine the effect of contact roughness on the critical state line, a property of granular materials which is a) fundamental for the evaluation of liquefaction risk and liquefied responses and b) e...
Conference Paper
Full-text available
Contact rolling resistance is the most widely used method to incorporate particle shape effects in the discrete element method (DEM). The main reason for this is that such approach allows for using spherical particles hence offering substantial computational benefits compared to non-spherical DEM models. This paper shows how rolling resistance para...
Conference Paper
Full-text available
Recent analyses have suggested that creep or rate effects may be present in some tailings and can play a role in triggering liquefaction failure. However, the role of creep in liquefaction triggering analysis of tailing dams is complicated by the effects of drainage and/or consolidation. To gain some understanding of this aspect, we investigate liq...
Conference Paper
Full-text available
Chalk covers areas of the UK and is widespread under the North and Baltic Seas where OWT are currently being installed and where future offshore expansion will be sited. Large piles are often driven in chalk to support OWT and other onshore infrastructure. The installation of pile foundations causes the intact rock surrounding the pile to crush and...
Conference Paper
Full-text available
A singular advantage of discrete element models (DEM) is their potential to incorporate grain scale information in the formulation of element behaviour and/or element interactions. This feature may lead to greatly simplified model calibration, bypassing the perennial soil mechanics problem of obtaining and testing representative samples. Within thi...
Article
Full-text available
The use of stress-deformation analyses to evaluate the characteristics of possible static liquefaction events is rapidly becoming the norm for tailings dams exposed to such risk. Ideally, those analyses should be based on constitutive models that incorporate the fundamental mechanics of the problem, that are able to perform robustly in commercial n...
Article
Full-text available
As society moves towards decarbonisation it is important to assess the hydro-mechanical behaviour of binders that could offer a low-carbon alternative to Portland cement in ground improvement technologies. This work considers two such alterna-tives: one still largely unexplored (metakaolin-based geopolymers) and a better known one (colloidal silica...
Article
Full-text available
Gabion-type support is a favoured option to restrain bulking in pillar walls of mine footprint tunnels. It uses closely spaced short reinforcements in tunnel walls (typically fully grouted rebar) in combination with surface support (rock fragment retention systems such as shotcrete, weld wire mesh, straps, etc.). The system is installed while the r...
Article
Full-text available
The paper presents a comprehensive set of simulations of the cone penetration test with pore pressure measurements (CPTu test) in brittle, potentially liquefiable, soils using advanced numerical techniques. The large displacements and large deformations involved in the cone penetration problem are tackled using the Particle Finite Element Method, e...
Article
Full-text available
En la exploración costa afuera con fines geotécnicos, la caracterización morfológica del fondo marino juega un papel importante en la definición de proyectos de implantación de estructuras mar adentro. Dentro de las geoformas que pueden estar presente, en ambientes marinos, se encuentran unas depresiones o máculas (pockmarks en inglés), que resulta...
Article
Full-text available
The Standard Penetration Test (SPT) is the most popular example of dynamic probing, a large category of soil testing techniques. Understanding and interpretation of these tests is hampered by the difficulties of reproducing them under controlled laboratory conditions. The virtual calibration chamber technique, based on the Discrete Element Method (...
Article
Full-text available
The stability of methane hydrate depends on not only temperature and pressure but also the salinity of the environment where the methane hydrate exists. The variation in the stability of methane hydrate due to the change in salinity induces mechanical response in micro scale of the methane hydrate-bearing sediments (MHBS). However, it is really hea...
Article
Full-text available
Sand roughness is now accessible to measurement. Incorporating this parameter into sand models using the discrete element method (DEM) is known to improve bulk small strain response. In this work we explore the effect on problems where particle crushing takes place. A well-established DEM particle crushing model and a rough Hertzian contact model a...
Article
Full-text available
Models that introduce rolling resistance at the contact are widely employed in simulations using the discrete element method (DEM) to indirectly represent particle shape effects. This approach offers substantial computational benefits at the price of increased calibration complexity. This work proposes a method to simplify calibration of rolling re...
Chapter
This work presents a robust and mesh-independent implementation of an elasto-plastic constitutive model at large strains, appropriate for structured soils, into a Particle Finite Element code specially developed for geotechnical simulations. The constitutive response of structured soils is characterized by softening and, thus, leading to strain loc...
Article
Full-text available
The Standard Penetration Test (SPT) is the most widely used method for dynamic testing of soils. The test is simple and robust but difficult to control and not fully standardized. As a result, experimental results typically show large variations and poor repeatability. To mitigate that correction factors such as energy normalization and rod length...
Article
Full-text available
Particle shape has a strong effect on the mechanical response of coarse soils. This has been usually observed examining specimen-scale or engineering-scale responses, which are the sum of many microscale interactions. In this work we observe the effects of particle shape directly at the microscale level. X-ray tomography (μ-CT) of two sand specimen...
Conference Paper
Full-text available
The SW Iberian margin is recognized to be a tectonically active area with major canyons and profuse evidence of mass wasting, representing a plausible region for tsunami generation due to submarine earthquake-triggered landslides. For this reason, submarine landslide susceptibility mapping becomes a major concern for regional mitigation risk strate...
Conference Paper
A site investigation campaign was carried out to assess jack up leg penetration in several sites of an offshore area in the Northeastern coast of South America. The investigation identified a thick layer of overconsolidated, medium to hard clay, with a thickness between 30 to 40 m, in which the undrained shear strength showed strong dependency on t...
Article
Borehole tube sampling is a key process of geotechnical engineering. The paper presents numerical analyses of smooth tube sampling in clay using the Particle Finite Element Method (PFEM). The soil is described by a conventional elasto-plastic constitutive model (Tresca plasticity and a quasi-incompressible elastic law). The sampler is advanced by s...
Article
Full-text available
The self-boring pressuremeter (SBP) test was designed to measure in situ engineering properties of the ground with a relatively small amount of disturbance. The properties that may be inferred from the test depend on the mechanical model used for its interpretation and on the significance given to other previously available information. In this pap...
Article
Full-text available
The SW Iberian continental margin is well recognized as a tectonically active area, where major canyons and mass wasting events are both present. Earthquake triggered submarine landslides may cause tsunami and result in catastrophic damage to bordering coastal areas. In this setting, submarine landslide susceptibility mapping represents a major ste...
Conference Paper
Full-text available
Geotechnical soil profiling of a site is a key step in geotechnical design. Cone Penetration Test (i.e. CPTu) has become a widely used in-situ method for soil classification based on characteristic responses to the cone. Nevertheless, CPTu-based profile delineations inevitably require engineering interpretation, as the CPTu record is affected both...
Chapter
Full-text available
Submarine landslides have been identified in almost all ocean basins worldwide. The largest submarine landslides occur on very shallow slopes and can be far larger than any terrestrial landslide. Submarine landslides can produce tsunami whose far‐reaching effects can rival those produced by earthquake‐tsunamis and threaten increasingly populated co...
Article
Full-text available
In granular soils grain crushing reduces dilatancy and stress obliquity enhances crushability. These are well-supported specimen-scale experimental observations. In principle, those observations should reflect some peculiar micromechanism associated with crushing, but which is it? To answer that question the nature of crushing-induced particle-scal...
Conference Paper
Full-text available
This paper shows how three new concepts-'Design Cases' (introduced in prEN 1990), the 'Geotechnical Design Model' (prEN 1997-1), and the 'Ground Model' (prEN 1997-2)-are combined (in prEN 1997-3) to provide a comprehensive and flexible set of tools for the design of specific geotechnical structures. The paper presents flow charts divided between: a...
Conference Paper
Full-text available
The mechanical behaviour of granular materials is characterized by strong non-linearity and irre-versibility. In particular, particle breakage will induce additional plastic deformations beyond those which might be expected for a rigid particle assumption. When defining a constitutive model, experimental data on the nature of the incremental respon...
Conference Paper
Full-text available
Discrete-element simulations are used to explore the relation between breakage-induced grading evolution and the critical state line position on the compression plane. An efficient model of particle breakage is applied to perform a large number of tests, in which grading evolution is continuously tracked using a grading index. Using both previous a...
Conference Paper
Full-text available
This paper describes the development of the final Project Team (PT) draft of the next generation of Eurocode 7 Part 1 (EN 1997-1:202x). The use of Nationally Determined Parameters and the drive for ease-ofuse is highlighted. Key changes from the previous version of EN 1997-1 are explained, including the introduction of the Geotechnical Design Model...
Conference Paper
Full-text available
This contribution describes a preliminary parametric analysis of the factors affecting the pull-out resistance of screw-piles in undrained conditions. The numerical simulations rely on the Particle Finite Element method, a method known for its capabilities to tackle large deformations and rapid changing boundaries at large strains. A total stress a...
Article
Full-text available
The virtual calibration chamber technique, based on the discrete element method, is here applied to study the standard penetration test (SPT). A macro-element approach is used to represent a rod driven with an impact like those applied to perform SPT. The rod is driven into a chamber filled with a scaled discrete analogue of a quartz sand. The cont...