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Potential CO2 leakage from geological storage sites: advances and challenges Environ. Geotech. (IF 1.621) Pub Date : 2020-12-11 Kimia Mortezaei; Amin Amirlatifi; Ehsan Ghazanfari; Farshid Vahedifard
This paper provides an overview of recent advances and remaining challenges in predicting, quantifying, detecting and mitigating carbon dioxide (CO2) leakage from geological storage sites to overlying aquifers and the atmosphere. Sequestering carbon dioxide in deep geological formations offers a promising solution for reducing anthropogenic carbon dioxide emissions. However, there remain critical questions
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Modelling of ex situ dissolution for CO2 sequestration Environ. Geotech. (IF 1.621) Pub Date : 2020-12-11 Aleksander Cholewinski; Yuri Leonenko
In this paper, a model for diffusion-controlled dissolution of carbon dioxide (CO2) droplets is presented. This model is applied to a system of co-current turbulent horizontal pipe flow of carbon dioxide–brine mixture in order to determine the feasibility of dissolving carbon dioxide within the pipe before injecting underground. Depending on the droplet size, there are two regimes of dissolution within
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Hydromechanical modelling of CO2 sequestration using a component-based multiphysics code Environ. Geotech. (IF 1.621) Pub Date : 2020-12-11 Qiushi Chen; Zhengshou Lai
Geologic carbon dioxide sequestration (GCS) is a complex process with coupled multiphysics mechanisms, including non-linear solid deformations and fluid flow. When applying a finite-element method to solve such a complex problem, implementing and solving non-linear partial differential equations with sophisticated material models pose great challenges. In this work, a generic component-based multiphysics
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Reusing abandoned natural gas storage sites for compressed air energy storage Environ. Geotech. (IF 1.621) Pub Date : 2020-12-11 Amin Amirlatifi; Farshid Vahedifard; Maria Degtyareva; Richard N Turner; Brian Sullivan; Ritabrata Santra; Richard A Esposito
This study aims to investigate the feasibility of reusing uneconomical or abandoned natural gas storage (NGS) sites for compressed air energy storage (CAES) purposes. CAES is recognised as a viable means of high-capacity short- to mid-term energy storage. However, the widespread implementation of CAES is limited to geological and geographical settings and requires substantial infrastructure and capital
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The effects of spatially correlated heterogeneities on acidising wormhole development Environ. Geotech. (IF 1.621) Pub Date : 2020-12-11 Masoud Babaei; Majid Sedighi
A commonly used rock stimulation technique in subsurface geoenergy technologies is matrix acidisation. During this process, an acidic solution is injected into the hydrocarbon or geothermal reservoirs to dissolve certain minerals and enhance the injectivity and productivity of the hydrocarbon or heat recovery operation. This study aims to investigate the influence of three-dimensional (3D) lithological
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Piled foundations and pathways for ground gas migration in the UK Environ. Geotech. (IF 1.621) Pub Date : 2020-12-10 Steve Wilson; Sarah Mortimer
Piled foundations are commonly thought to create preferential pathways for ground gas migration. This view is often held without consideration of site-specific ground conditions, pile type or source of gas. There are currently no published data that quantify the effects of piles on gas flow from the ground. Both contaminated water and gas are fluids that for the purposes of this paper can be modelled
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THCM numerical simulations of the engineered barrier system for radioactive waste disposal Environ. Geotech. (IF 1.621) Pub Date : 2020-12-14 Javier Samper; Alba Mon; Luis Montenegro; Acacia Naves
The final disposal of high-level radioactive waste in geological repositories envisages an engineered barrier system with a bentonite buffer, which will be subjected to strongly coupled thermal, hydrodynamic, geochemical and mechanical (THCM) processes. This paper presents coupled THCM numerical simulations of laboratory and in situ tests performed with compacted Full-scale Engineered Barrier Experiment
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A comparison between Fe0/pumice and Fe0/lapillus mixtures in permeable reactive barriers Environ. Geotech. (IF 1.621) Pub Date : 2020-12-01 Stefania Bilardi; Paolo S Calabrò; Nicola Moraci; Maria G Madaffari; Ehsan Ranjbar
Recent experimental studies have shown that it is possible to improve the hydraulic and reactive behaviour of permeable reactive barriers (PRBs) composed of zero-valent iron (ZVI) by admixing this reactive medium with volcanic materials such as lapillus or pumice. In this study, the adsorption behaviour of lapillus and pumice was evaluated through batch tests carried out using nickel- and zinc-contaminated
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Optimal ranges of soil index properties for diesel containment using compacted barriers Environ. Geotech. (IF 1.621) Pub Date : 2020-12-01 Sandro L Machado; Miriam F Carvalho; Zenite S Carvalho; Mehran Karimpour-Fard; Digna G Mariz
Results of laboratory and field permeability tests performed in order to specify optimal ranges of soil index properties for the containment of organic liquids are presented. Liners for waste containment are often constructed with the use of fine-grained, high-plasticity natural soils, which normally present low hydraulic conductivity and are capable of attenuating inorganic soluble chemical species
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Effects of steel pile corrosion on permeability of hydraulic barriers Environ. Geotech. (IF 1.621) Pub Date : 2020-12-01 Pascal Minder; Michael Plötze; Joseph Hughes; Alexander M Puzrin
An increasing economic interest leads to construction on old landfills and waste deposits, raising questions about potential contamination of groundwater due to installation of piles through clay barriers. The current consensus in the geotechnical practice, that penetration of clayey hydraulic barriers by driven steel piles with closed conical tips should not cause pollution of the underlying aquifers
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Thermo-elasto-plastic analysis of geosynthetic clay liners exposed to thermal dehydration Environ. Geotech. (IF 1.621) Pub Date : 2020-12-01 Javad Ghorbani; Abbas El-Zein; David W Airey
Geosynthetic clay liners (GCLs) are designed to minimise contaminant migration into subsoils in landfills and other waste containment systems. The so-called mixture theory has typically been chosen as a basis for numerical models describing the complicated behaviour of GCLs subjected to thermo-hydro-mechanical changes. Despite progress in this area in the past decade, some aspects of the response of
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Impact of transient seepage on slope stability of earth-rock dams with geomembrane barrier defects Environ. Geotech. (IF 1.621) Pub Date : 2020-12-01 Weijun Cen; Dengjun Li; Hui Wang
The water–air two-phase unsaturated seepage theory was employed to analyse the transient seepage field of an earth-rock dam with an impervious geomembrane barrier during rapid drawdown of the reservoir. Discussed is the resulting seepage behaviour of the dam after locations of defects in geomembranes and hydraulic conductivity of dam materials were changed. In addition, the unsaturated soil strength
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Effect of chemico-osmosis on solute transport in clay barriers Environ. Geotech. (IF 1.621) Pub Date : 2020-10-08 Michael A Malusis; Joseph Scalia; Anna S Norris; Charles D Shackelford
The significance of chemico-osmosis on solute transport through clay barriers exhibiting membrane behaviour was investigated by conducting coupled solute transport model simulations in which the effect of chemico-osmosis was either included or omitted. Results show that percentage reductions in solute flux (P RF) through a clay barrier increase with increasing membrane efficiency coefficient, ω; decreasing
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An analytical model for contaminant transport in cut-off wall and aquifer system Environ. Geotech. (IF 1.621) Pub Date : 2020-10-08 Haijian Xie; Shaoyi Wang; Yun Chen; Jianqun Jiang; Zhanhong Qiu
The vertical cut-off wall is a practical means of site contamination control. It is of great importance to predict the service time of a vertical cut-off wall. Previous analytical models on simulation of a cut-off wall neglected the existence of the aquifer, which can lead to simulation errors. An analytical model was developed for contaminant transport in a vertical cut-off wall and an aquifer system
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The couplings of rock/carbonate groundwater/cement leachate Environ. Geotech. (IF 1.621) Pub Date : 2020-10-08 Junjie Chen; Xiaohui Chen; Manhui Wang; Steve Thornton; Yueyang Wang; Yue Ma
Hyper-alkaline cement leachates generated from the cement buffer of a nuclear waste disposal site have significant influences on the mineralogy of the host rock, creating a chemically disturbed zone (CDZ). Three major types of cement leachates are formed during the evolution process. Most of the existing scenario modelling research has been focused on the influence of the cement leachate on the host
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The permeability of composite soils Environ. Geotech. (IF 1.621) Pub Date : 2020-10-08 Muataz M Al-Moadhen; Barry G Clarke; Xiaohui Chen
Many natural soils (e.g. glacial tills, residual soils and alluvial soils) and artificial soils (e.g. engineered fill and environmental barriers) are composite soils formed of a range of particle sizes and types. These soils are often difficult to sample and test when following standard site investigation practice; thus, it is necessary to resort to empirical correlations, most of which were developed
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Barrier performance of geosynthetic clay liners to copper (II) chloride solutions Environ. Geotech. (IF 1.621) Pub Date : 2020-10-08 Ali Hakan Ören; Meriç Öztürk; Tuğçe Özdamar Kul; Zuhal Nart
Three needle-punched geosynthetic clay liners (GCLs) which had been manufactured with sodium (Na+) bentonite (Na-GCL) and polymerised sodium bentonites (PLS-GCL-1 and PLS-GCL-2) were permeated with 50 and 100 mM copper (II) chloride (CuCl2) solutions. The hydraulic conductivity of Na-GCL to 50 mM copper (II) chloride gradually increased to 7·7 × 10−9 m/s. In contrast, PLS-GCL-1 and PLS-GCL-2 had hydraulic
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Contribution to the geotechnical classification of municipal waste landfills in Serbia Environ. Geotech. (IF 1.621) Pub Date : 2020-10-08 Dragoslav Rakic; Irena Basaric; Laslo Caki; Slobodan Coric
The geotechnical classification system presented in this paper utilises municipal waste from two landfills in Serbia. Sorting and separating was performed according to the instructions outlined in the Solid Waste Analysis Tool (S.W.A.-Tool), and the composition of the municipal waste was defined based on the results. The material was grouped according to particle shape, which was identified through
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Heavy metals contamination within restored landfill site in Poland Environ. Geotech. (IF 1.621) Pub Date : 2020-10-08 Eugeniusz Koda; Anna Miszkowska; Anna Sieczka; Piotr Osiński
This study was aimed at determination of the influence of an old municipal landfill site on the pollution of soil and groundwater by heavy metals. The impact assessment was conducted on the bases of piezometric recording, laboratory tests and site investigation, which gave information on the contamination level and direction of the pollutant migration. Based on the groundwater monitoring results, maps
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A review on mobility of engineered carbon-based nanoparticles in porous media Environ. Geotech. (IF 1.621) Pub Date : 2020-09-18 Shumsun Nahar Siddique
Engineered nanoparticles have generated significant public and scientific excitement due to their unique physical, chemical and electrical properties, which have led to their application in a wide variety of industries. Among all these, carbon nanoparticles (CNPs) are widely manufactured nanoparticles which are utilised in a significant quantity of consumer products, such as reinforced concrete, plastics
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Effects of unsaturated properties on stability of slope covered with Caesalpinia crista in Singapore Environ. Geotech. (IF 1.621) Pub Date : 2020-09-18 Harianto Rahardjo; Alfrendo Satyanaga; Chien Looi Wang; Johnny Liang Heng Wong; Vincent Han Lim
Rainfall plays an important role in affecting the slope stability in a tropical country such as Singapore. The soil in Singapore is mainly residual soil with a deep groundwater table that is commonly found in the unsaturated condition in the presence of matric suction. This paper presents the unsaturated properties of soil with roots of Caesalpinia crista and their effects on slope stability during
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Geotechnical properties of compacted biosolids for monofill design, As-Samra, Jordan Environ. Geotech. (IF 1.621) Pub Date : 2020-09-18 Brendan C O’Kelly; Nicolas K Oettle; Jose A Ramos
This paper presents the results of a comprehensive geotechnical laboratory testing for the assessment and design of a proposed biosolid monofill facility at the As-Samra Waste Water Treatment Plant (WWTP) in Jordan. Previous landfill operations for biosolid materials typically involved co-disposal or lagooning of the dewatered biosolid slurry. However, it is proposed that the solar-dried As-Samra WWTP
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A biomediated deterioration mitigation method for cement-treated soil Environ. Geotech. (IF 1.621) Pub Date : 2020-09-18 Toshiro Hata; Daisuke Suetsugu; Kiyonobu Kasama
Cement-treated soil is widely used in many countries and is sometimes applied in estuary and coastal region civil infrastructures such as embankments and port facilities. In some of these facilities, leachates and deterioration of strength have been detected after 20 years of service and therefore require maintenance work such as chemical injection and reconstruction. The reasons for these failures
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Electrical resistivity and elastic wave velocity of sand–cement–inorganic binder mixture Environ. Geotech. (IF 1.621) Pub Date : 2020-08-24 Pacifique Kiza Rusati; Ki-Il Song; Yeo-Won Yoon; Woonsik Hwang; Lang Liu
Cement-based grout has been used for ground improvement. Owing to environmental issues related to cement, its usage should be reduced. In this study, an inorganic binder is introduced to reduce the use of cement in grout. To evaluate the transient electrical and mechanical properties of the sand–cement admixture samples improved with the addition of inorganic binders, two non-destructive testing methods
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Anchorage and stability of tree root–soil plates Environ. Geotech. (IF 1.621) Pub Date : 2020-08-24 Daryl Lee Tsen-Tieng; Harianto Rahardjo; Leong Eng Choon; Fong Yok King
This study explored the use of root cross-section dimensions, root distribution, uplifted root/soil volume, greenwood modulus of rupture and soil/greenwood densities in a biomechanical close form model based on past literature to estimate the resistance to uprooting of tree root–soil plates. This study used data obtained from a tree-pulling exercise involving 20 planted Samanea saman, a common species
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Stability analysis of vegetated residual soil slope in Thailand under rainfall conditions Environ. Geotech. (IF 1.621) Pub Date : 2020-08-24 Thanh Son Nguyen; Suched Likitlersuang; Apiniti Jotisankasa
The effects of climate change including intense rainfalls have resulted in many slope failures. The bioengineering method using vegetation is an environmentally friendly alternative for slope stabilisation. This paper presents the effect of root reinforcement on the stability of vegetated slope under rainfall condition. A transient seepage and slope stability analysis was conducted based on the finite-element
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Procedures for quick estimation of hydraulic conductivity of unsaturated soils Environ. Geotech. (IF 1.621) Pub Date : 2020-08-24 Shaoyang Dong; Yuan Guo; Xiong (Bill) Yu
This paper describes a heuristic approach that combines a limited number of experimental measurements with the random finite-element method (RFEM) to accelerate significantly the process of measuring the hydraulic conductivity of unsaturated soils. A microstructure-based RFEM model is established to describe unsaturated soils with distribution of phases based on their respective volumetric contents
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Surfactant flow and transport in the vadose zone: a numerical experiment Environ. Geotech. (IF 1.621) Pub Date : 2020-08-24 Rashid Bashir; James E Smith; Dieter F E Stolle
The presence of surfactants in the unsaturated zone is one of the scenarios where the flow depends on the solute concentration. The simulation of flow and transport of surfactants requires the coupling of flow and transport, where the surfactant concentration-dependent changes to water retention (i.e. changes in surface tension and/or contact angle) and hydraulic conductivity need to be considered
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Influence of stress field anisotropy on drilling-induced tensile fracture Environ. Geotech. (IF 1.621) Pub Date : 2020-08-24 Manman Hu; Manolis Veveakis; Klaus Regenauer-Lieb
Drilling-induced tensile fracture under anisotropic stress conditions is investigated numerically with an elasto-viscoplastic constitutive model, in which the plastic strain rate can be decomposed into deviatoric and volumetric components. Both the deviatoric and volumetric invariants of the plastic strain rate are assumed to follow an incremental power-law relationship with an Arrhenius dependence
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Synthesis of a benchmark exercise for geotechnical analysis of a thermoactive pile Environ. Geotech. (IF 1.621) Pub Date : 2020-07-06 Julien Habert; Hussein Mroueh; Josif Josifovski; Witold Bogusz; Donatella Sterpi; Konstantinos Georgiadis
Thermoactive piles ensure a dual function: they support mechanically the superstructure and at the same time they are used as heat exchanger elements. In comparison to standard design practice, this requires considering the associated thermal loadings from the operation of the heat exchange system. To assess the thermal effects on the mechanical behaviour, different design assumptions and modelling
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Long-term thermo-mechanical behaviour of energy piles in clay Environ. Geotech. (IF 1.621) Pub Date : 2020-07-06 Van Tri Nguyen; Nanwangzi Wu; Yixiang Gan; Jean-Michel Pereira; Anh Minh Tang
In engineering practice, energy pile foundations are often designed for the lifetime of the building. Thermal exchange between a pile and the surrounding soil depends on the annual energy needs of the building, as heating mode in winter and cooling mode in summer. Thus, energy pile foundations will undergo a heating–cooling cycle per year. In the present work, an experimental method based on a small-scale
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Long-term assessment of thermal sustainability of thermoactive geostructures Environ. Geotech. (IF 1.621) Pub Date : 2020-07-06 Yvon Delerablee; Sebastien Burlon; Philippe Reiffsteck
Thermoactive geostructures represent an original and efficient technique for fulfilling the energy demand of buildings and infrastructure, in terms of both cooling and heating. Thermal and mechanical aspects have to be considered to achieve a proper design of such structures. This paper focuses only on thermal aspects and deals with the development of an original approach based on the analysis of thermal
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On the performance of energy walls by monitoring assessment and numerical modelling: a case in Italy Environ. Geotech. (IF 1.621) Pub Date : 2020-07-06 Adriana Angelotti; Donatella Sterpi
Thermoactive diaphragm walls have proved their efficiency for near-surface geothermal energy use. To get insights into the heat transfer process occurring between the heat exchanger pipes and the surrounding boundaries, an instrumented real case located in northern Italy was taken as reference. Combining on-site monitoring data with computational simulations, the role of the basement space in governing
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Heat energy from a shallow geothermal system in Glasgow, UK: performance evaluation design Environ. Geotech. (IF 1.621) Pub Date : 2020-07-06 Konstantinos Ninikas; Nicholas Hytiris; Rohinton Emmanuel; Bjorn Aaen
This study reports on the actual energy and economic performances of a water source heat pump recently installed and operated at a Glasgow Subway station in the UK using subsurface water ingress to provide heating and domestic hot water. This follows from a previous publication that detailed the empirical measurements and design of a heating system designed on the basis of a 15-month monitoring period
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Geothermal potential of the NE extension Warsaw (Poland) metro tunnels Environ. Geotech. (IF 1.621) Pub Date : 2020-07-06 Matteo Baralis; Marco Barla; Witold Bogusz; Alice Di Donna; Grzegorz Ryżyński; Mateusz Żeruń
Thermoactive geostructures are considered an economically suitable and environment-friendly solution for heating and cooling buildings. Energy tunnels have gained growing interest in recent years because of the large ground volume involved in heat exchange in comparison to building foundations. Heat exchange is obtained by embedding a circuit of pipes into the precast concrete lining, resulting in
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Simulation of observed temperature field below a building in Bologna, Italy Environ. Geotech. (IF 1.621) Pub Date : 2020-07-06 Sara Focaccia; Alberto Barbaresi; Francesco Tinti
Urban settlements, whether single buildings or apartment blocks, influence near-surface ground temperatures. Heat transfer by buildings to the ground must therefore be considered when designing both vertical probes and energy geostructures in urban areas. However, assessment of ground temperature variability in urban areas is still uncommon for shallow geothermal energy purposes, the standard temperature
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City-scale analysis of subsoil thermal conditions due to geothermal exploitation Environ. Geotech. (IF 1.621) Pub Date : 2020-07-06 Marco Barla; Alice Di Donna; Matteo Baralis
Shallow geothermal energy is currently adopted in many countries for the heating and cooling of buildings. Interactions between close geothermal plants will become more and more relevant as a result of the widespread dissemination of such systems. This paper describes a preliminary investigation of the interactions at the city scale. The case study of a central district in the city of Turin (Italy)
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Seasonal deformations under a road embankment on degrading permafrost in Northern Canada Environ. Geotech. (IF 1.621) Pub Date : 2020-06-26 David Kurz; David Flynn; Marolo Alfaro; Lukas U Arenson; Jim Graham
Permafrost degradation is a major concern in cold regions that are warming because of climate change. To assist in understanding the process, ground temperatures, lateral and vertical deformations and groundwater pressures were measured for 6 years under a road embankment in northern Manitoba, Canada. The road surface requires ongoing maintenance due to irregular settlements. The field data allowed
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Efficiency of sophorolipids for arsenic removal from mine tailings Environ. Geotech. (IF 1.621) Pub Date : 2020-06-26 Fereshteh Arab; Catherine N Mulligan
Mine tailings are one of the main sources of dissolved arsenic (As) in groundwater. In the present study, an investigation was conducted on the efficiency of sophorolipids, at different concentrations and pH levels and at two different temperatures (15°C and 23°C), to remove arsenic and heavy metals from mine tailings. Furthermore, the effect of sophorolipids on the speciation of arsenic and the effectiveness
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Effect of temperature on the strength of lime-stabilised fly ash Environ. Geotech. (IF 1.621) Pub Date : 2020-06-26 Aparupa Pani; Suresh Prasad Singh
Class F fly ash cannot be used alone as a construction material due to its low self-cementing properties. This paper reports the compaction characteristics, strength properties and microstructure of lime-amended fly ash with varying lime content from 0 to 12%. The effects of the curing temperature on the strength and microstructure of the lime-amended fly ash are studied at different curing periods
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Further development of a laboratory procedure to assess the mechanical performance of cob Environ. Geotech. (IF 1.621) Pub Date : 2020-06-26 Théo Vinceslas; Erwan Hamard; Andry Razakamanantsoa; Fateh Bendahmane
Cob is a vernacular earth-building technique which has encountered renewed interest for its low environmental impact compared to conventional construction materials. Relevant mechanical characterisation is essential for cob building structure design and calculation. This paper presents an improved laboratory procedure to better the characterisation of representative cob samples. Samples prepared by
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Effect of thermal loads on pre-cast concrete thermopile in Valencia, Spain Environ. Geotech. (IF 1.621) Pub Date : 2020-06-26 Fernando Pardo de Santayana; Cristina de Santiago; María de Groot; Javier Uchueguía; José Luis Arcos; Borja Badenes
The paper describes the thermo-mechanical behaviour of an experimental pre-cast driven pile, properly instrumented and prepared to operate as a heat exchanger foundation element under the simultaneous action of mechanical and thermal loads. Firstly, in situ static vertical load tests were carried out to analyse the pile mechanical behaviour. Afterwards, two thermal tests were performed under constant
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Full-scale test for KBS-3H spent nuclear fuel repository alternative in Sweden Environ. Geotech. (IF 1.621) Pub Date : 2020-04-15 PintadoXavier; SchatzTimothy; García-SiñerizJosé Luis; KronbergMagnus
This paper describes the instrumentation of a full-scale test, known as the Multi-Purpose Test, of the KBS-3H spent nuclear fuel design alternative carried out in the Äspö Hard Rock Laboratory (Sweden). This test is part of the Large Underground Concept Experiments EU project, where Posiva and Svensk Kärnbränslehantering are partners. The test consists of two aspects. The first is that of a ‘demo’
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Bentonite buffer blocks manufactured by isostatic compression Environ. Geotech. (IF 1.621) Pub Date : 2020-04-15 GharbiehHeidar; BohnerEdgar; HaapalaKeijo; SalparantaLiisa
Isostatic compression is a technically highly specialised technology for manufacturing solid components from powder. There are only few reported experiences for isostatic compression of bentonite clay, which forms the basis of the engineered barrier system in the geological disposal concept KBS-3V, currently under investigation in Sweden and Finland. An isostatically compressed middle-scale MX-80 bentonite
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Laboratory study of interactions between copper and microorganisms in oxic groundwater Environ. Geotech. (IF 1.621) Pub Date : 2020-04-15 Huttunen-SaarivirtaElina; RajalaPauliina; BombergMalin; CarpénLeena
The interactions between copper, the canister material in the nuclear waste disposal concept in Finland and Sweden, and micro-organisms in groundwater in their expected near-field environment are the core interest of this paper. Copper specimens were incubated with ammonia-oxidising bacteria for different time periods and then subjected to electrochemical measurements and surface characterisation to
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Leadership for management of high-level radioactive waste in Japan Environ. Geotech. (IF 1.621) Pub Date : 2020-04-15 TakeuchiMaria R H; HasegawaTatsuya; HardieSusie M L; McKinleyLinda E; IshiharaKeiichi N
High-level radioactive waste (HLW) management in Japan stalled prior to selecting any candidate sites for a literature survey, the first step of a staged programme for selecting a disposal site. The situation deteriorated after the Fukushima Daiichi accident. The Nuclear Waste Management Organization of Japan has suffered a loss of national/international credibility in the geological disposal project
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State of the in situ Febex test (GTS, Switzerland) after 18 years: a heterogeneous bentonite barrier Environ. Geotech. (IF 1.621) Pub Date : 2020-04-15 VillarMaría Victoria; IglesiasRubén J; García-SiñerizJosé Luis
The in situ Full-scale Engineered Barriers Experiment or Febex was a full-scale test reproducing the near field of a nuclear waste repository. It was performed in a gallery excavated in granite at the Grimsel Test Site in Switzerland, with a heater whose surface temperature was set to 100°C, simulating the waste canister and a bentonite barrier composed of highly compacted blocks. The test was completely
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