Mechanical bentonite

Beacon: bentonite mechanical evolution ScienceDirect

2020年5月5日  The key objective of Beacon [1] is to refine and verify the tools needed for the assessment of the mechanical evolution of installed bentonite components and the eventual 2023年9月15日  A series of suctioncontrolled direct shear tests under drained conditions were carried out aiming to investigate the hydromechanical behaviour of the interface, considering Hydromechanichal characterisation of bentonite/steel interfaces2020年1月1日  This article will present a hydromechanical model developed by the Lithuanian Energy Institute (LEI) in the framework of H2020 project BEACON (Bentonite Mechanical Evolution)(PDF) Beacon: bentonite mechanical evolutionBentonite Mechanical Evolution The sealing ability is essential for the engineered clay (bentonite) barriers in all geological repository concepts The overall objective of the Beacon project is to Beacon – Bentonite Mechanical Evolution – This project is in Grant

Mechanical behaviour of heavily compacted bentonite under high

Compacted bentonite is often used as the basic material for constructing isolating barriers in geoenvironmental applications or as basal and cap liners for landfills/retention basins (Koch, PDF On Nov 1, 2024, Tsion Amsalu Fode and others published Modeling and optimization of calcined bentonite replacement in the mechanical and durability properties of mortar Find, Modeling and optimization of calcined bentonite replacement in The Beacon (Bentonite mechanical evolution) project was set up to study the performance of inhomogeneous bentonite barriers in the context of disposal of high level radioactive waste Database Bentonite Experiments – Beacon – Bentonite Mechanical 2020年5月9日  In this paper, the hydromechanical properties of GMZ bentonite pellet mixtures were investigated in the laboratory by carrying out water retention tests on pellet mixtures Investigation of the hydromechanical behaviour of GMZ

The Project – Beacon – Bentonite Mechanical Evolution

Thus developing predictive capabilities of the mechanical behaviour of bentonite buffers, seals and backfills are a common need for all radioactive waste management programs that use bentonite in one or more engineered barrier 2022年10月3日  Therefore, the hydromechanical behaviour of bentonite declined significantly in the first 15–30 days, and changed little after that On the other hand, due to the long decay period of nuclear waste, up to tens of thousands of years, the buffer material in the repository will be in a high temperature state for a very long timeEffect of heating time on hydromechanical behaviour of MX80 bentonite 2023年9月15日  Bentonite will be placed in its hygroscopic state in the tunnel excavated in the host rock, however, the state of the material is expected to be affected by the mechanical impact of the shear stresses caused by possible deformation of the outer rock (Alonso et al, 2005; Tang et al, 2008; Bosch Llufriu, 2021)Hydromechanichal characterisation of bentonite/steel interfaces2021年7月1日  As a buffer material in nuclear waste disposal repository, bentonite experiences longterm persistent heating because of thermal energy released from the sealed nuclear waste canisters There is no conclusive evidence on how high temperature affects the selfsealing capacity of bentonites To investigate this effect, bentonite was heated in a muffle furnace at a Hydromechanical Performance of HeatTreated Bentonite

Application of bentonite in cementbased composites: A review of

1 天前  Application of bentonite in cementbased composites: A review of current status, challenges and future prospects Author links open overlay panel Kamrul morphological analysis, and the effect of incorporating BT on the fresh, mechanical, and durability properties of CBMs were reviewed On top of that, BT's lifecycle assessment For the safe disposal of highlevel radioactive waste, it is necessary to establish a numerical model that can simulate the phenomenon of buffer expansion due to groundwater inflow The Barcelona basic model (BBM), one of many models that describe the swelling behavior of buffer, can represent the behavior of expansive soil but requires various hydromechanical input Mechanical parameter identification technique for a bentonite Some of these studies have considered the mechanical behaviour of bentonite, others have collected data on mechanical behaviour but have not analysed the data The purpose of this database is to collate available experimental information that could help advance understanding of the mechanical behaviour of bentoniteDatabase Bentonite Experiments – Beacon – Bentonite Mechanical 2024年5月6日  Compacted bentonite is under consideration as a backfill material for engineered barrier systems in a geological repository for highlevel radioactive waste Coupled THM (thermal–hydrological–mechanical) models for laboratory tests have been effective in understanding coupled processes and improving modeling capability While studies on Coupled ThermoHydroMechanical Modeling of Bentonite

A REVIEW ON PACKING AND HYDROMECHANICAL BEHAVIOUR OF BENTONITE PELLET

Bentonite pellet mixtures are considered as an alternative buffer/backfilling materials for highlevel radioactive waste(HLW)repository The packing and hydromechanical behaviour of bentonite pellet mixtures are of great significance for the safety evaluation of the HLW repository In this paper, previous researches on the packing and hydromechanical behaviour of bentonite pellet 2023年4月1日  DOI: 103390/ma Corpus ID: ; Rheological and Mechanical Properties of Bentonite–Cement Paste Reinforced with Basalt Fibers @article{Sun2023RheologicalAM, title={Rheological and Mechanical Properties of Bentonite–Cement Paste Reinforced with Basalt Fibers}, author={Pinghe Sun and Bang Wei Rheological and Mechanical Properties of Bentonite–Cement 2020年1月1日  In earlier assessments of bentonite EBS, the mechanical interaction between the installed bentonite components has been neglected and an “ideal” final state has generally been assumed(PDF) Beacon: bentonite mechanical evolution ResearchGate2020年10月30日  Compacted bentonite–sand mixtures are commonly considered as the key materials for the construction of engineered barrier systems (EBSs) in deep geological repositories (DGRs) in Canada and other countries These bentonitebased barriers can be simultaneously exposed to a wide range of chemical and thermal (nuclear waste heat decay) Effect of groundwater chemistry and temperature on swelling and

Numerical thermohydromechanical modeling of compacted bentonite

2012年6月25日  The Chinamockup test is to evaluate the performance of the compacted Gaomiaozi (GMZ) bentonite under coupled thermohydromechanical (THM) conditions in deep geological disposal A numerical study of the test is conducted in this paper The principal THM characteristics of the bentonite are presented at first A THM model is then presented to tackle 2021年9月3日  Compacted bentonite is often considered as a possible buffer/backfill material for deep geological disposal of highlevel radioactive waste During the longterm lifespan, the bentonite barriers will undergo coupled thermohydromechanical (THM) progresses, which induce complex volume changes In this work, the volume change behavior of compacted Analysing the volume change behaviour of compacted bentonites upon 2023年10月22日  Backfill mining has significant advantages in safe mining, solid waste utilization and ecological environmental protection, but solid waste materials (tailings, gangue and coal gasification slag, etc), as derivative residues of the chemical and metallurgical industries, contain a large number of heavy metal elements, which is posing great challenges to the underground A Preliminary Study on the Improvement of Gangue/Tailing2018年5月18日  This paper proposes a hydromechanical model of GMZ bentonite, based on the considerable amount of experimental research that has been developed recently The model uses a double porosity approach based on the framework provided by the Barcelona Expansive Model to describe the deformability of the bentoniteModelling the hydromechanical behaviour of GMZ bentonite

[PDF] Thermohydromechanical behavior of compacted bentonite

In this thesis, a study on the thermohydromechanical behavior of compacted bentonitesand mixtures which are among the materials proposed to be used as sealing material for landfills and hazardous waste repository is presented Mixtures of a calciumtype bentonite, Calcigel, and quartz sand were used in this study2023年2月18日  A large amount of bentonite slurry is dumped as construction waste in fill banks around the world In order to reuse them, it is important to determine the mechanical and hydraulic parameters of bentonitesoil mixtures containing different montmorillonite contents The establishment of these parameters with index properties is an efficient and simple way Estimation of mechanical and hydraulic parameters of bentonite 2023年8月21日  Bentonite pellet mixture emplaced in a highlevel radioactive waste (HLW) repository may suffer decay heat released by nuclides and alkaline solutions produced by concrete degradation, leading to complex hydromechanical behaviours different to those of compacted bentonite blocks In this paper, swelling pressure and hydraulic conductivity tests Temperature and alkaline solution effects on the hydromechanical 2024年8月29日  In the highlevel radioactive waste geological disposal, the gaps between the waste canisters, buffer layer, and surrounding rock, will affect the hydromechanical behavior of bentonite blocks In this paper, the gaps between the buffer layers were simulated by setting different technological void widths The interaction between technological void width and the Effect of technological voids on hydromechanical behavior of

Hydromechanical Performance of HeatTreated Bentonite

2021年7月1日  Abstract As a buffer material in nuclear waste disposal repository, bentonite experiences longterm persistent heating because of thermal energy released from the sealed nuclear waste canisters There is no conclusive evidence on how high temperature affects the selfsealing capacity of bentonites To investigate this effect, bentonite was heated in a muffle 2021年12月13日  Bentonite pellet/powder mixture has been considered as a possible sealing material in deep geological disposal of radioactive waste As the hydromechanical behavior of such mixture is intimately related to that of single pellet, in this study, water retention tests and compression tests were performed on single MX80 bentonite pellet to investigate its hydro Water retention and compression behavior of MX80 bentonite 2021年7月12日  21 Materials Both compacted GMZ07 bentonite powder and bentonite pellet mixtures were prepared to measure their thermal properties The proportion of pellets and powder in the bentonite pellet mixture was 70/30 on a dry weight basis and the pellet size was 025–05 mm based on Zhang et al [], who found that a bentonite pellet mixture with a pellet size of Thermal properties of GMZ bentonite pellet mixtures subjected 2024年8月30日  In the last few decades, A substantial number of studies have been performed on compacted bentonite powder (CBP) to investigate its hydromechanical behaviors, including waterretention behavior (Romero et al, 2011), swelling property (Yigzaw et al, 2016), compressibility (Ye et al, 2012) and permeability (Villar et al, 2010; Ye et al, 2013), parative study of hydromechanical behaviors of compacted bentonite

Mechanical behavior of GMZ bentonite pellet mixtures over a

2020年1月1日  Moreover, compared to that of compacted bentonite powder, the mechanical behavior of the granular materials (pellet mixtures) appears to be more complex, due to the possible rearrangements or crush of pellets during the wetting process or under vertical loads at the high suction stage 2024年3月13日  Bentonite plastic concrete (BPC) demonstrated promising potential for remedial cutoff wall construction to mitigate dam seepage, as it fulfills essential criteria for strength, stiffness, and Computational prediction of workability and mechanical 2021年12月16日  The bentonite is commonly used mixed with soils for groundwater retention and waste contaminant facilities The incorporation of bentonite could significantly reduce hydraulic conductivity In this study, the effects of bentonite content, hydration time and effective confining pressure on the static properties of a sand–bentonite mixture were studied using Effect of Bentonite Content and Hydration Time on Mechanical EBS, the mechanical interaction between the installed bentonite components has been neglected and an “ideal” final state has generally been assumed Key features of the project are (1) re Beacon: bentonite mechanical evolution ResearchGate

Coupled chemicalhydraulicmechanical behaviour of bentonites

2015年5月25日  Bentonites are clay soils characterised by a high specific surface and a permanent negative electric charge on their solid skeleton Their common use as hydraulic and contaminant barriers for landfill and soil remediation applications, including the final disposal of nuclear waste, needs to be supported by adequate theoretical modelling of their mechanical 2012年12月10日  This study deals with the hydromechanical behaviour of compacted bentonitebased materials used as sealing materials in highlevel radioactive waste repositoriesHydromechanical behaviour of bentonitebased materials Understanding the effect of salt solution on the mechanical properties of bentonite is crucial for evaluating the performance of buffer and backfill barriers in deep geological repositories for nuclear waste In this study, various concentrations and types of salt solutions were used to treat Nabentonite samples, which were then subjectedEfect of salt solution concentration and cation types on the mechanical Despite presenting a very high global warming toll, Portland cement concrete is the most widely used construction material in the world The ecoefficiency, economy, and the overall mechanical and durability performances of concrete The Influence of ThermoMechanical Activation of

The effect of thermal history on thermomechanical behavior of

2012年6月15日  Bentonitesand mixture is one of the most important candidates for engineering buffer element in nuclear waste repositories;so the analysis of its thermohydromechanical behavior is important for design purposesAn innovative setup of classic oedometer was used for swelling and compression study at high temperatures in this research A fully calibration 2021年7月1日  Compacted bentonite/bentonitesand mixture is considered as buffer material in the deep geological repository due to its favorable physicochemical and hydromechanical properties The bentonite Hydromechanical Performance of HeatTreated Bentonite2013年2月1日  56《Research Journal of Applied Sciences, Engineering and Technology》Mechanical Properties of Plastic Concrete Containing Bentonite （2013, 5 (4)）pdfMechanical Properties of Plastic Concrete Containing Bentonite2023年1月1日  In this paper, some advances on thermohydromechanicalchemical properties of bentonitesand mixture were presented for geological and engineered barrier through bentoniteA preliminary study of hydromechanical properties for bentonite

Insights into the water retention behaviour of GMZ bentonite

2021年6月9日  Consequently, the hydromechanical behaviour of bentonite pellet mixture could be much different from that of compacted bentonite blocks [9, 18, 19, 31, 35] Therefore, it is essential to understand the water retention and pore structure evolution of pellet mixture with a comparison to those of compacted block2021年6月15日  In the context of the French Cigéoproject, a mixture composed of 70% processed CallovoOxfordian claystone spoil and 30% MX80bentonite could be a potential backfill material, whose installation aims to stabilize the surrounding rock formation and to limit the propagation of the excavation damaged zone The backfill material must sustain the Hydromechanical path dependency of claystone/bentonite 2023年3月16日  Therefore, it must satisfy thermo–hydraulic–mechanical requirements Although thermal–hydraulic properties have been investigated extensively, the mechanical properties of compacted bentonite buffers have not been comprehensively evaluated Therefore, a series of uniaxial compression and point load tests were conducted in this studyEvaluation of uniaxial compression and point load tests for 2010年3月15日  The bentonite barrier of underground repositories for highlevel radioactive waste will be hydrated by the groundwater while it is subjected to high temperatures due to the radioactive decay of the wastes These changes of temperature affect the hydraulic and mechanical responses of bentonite, which has important effects on design and performance of Experimental investigation into temperature effect on hydromechanical

Hydromechanical behaviour of bentonitebased materials used

2012年12月10日  This study deals with the hydromechanical behaviour of compacted bentonitebased materials used as sealing materials in highlevel radioactive waste repositories The pure MX80 bentontie, mixtures of MX80/crushed claystone and MX80/sand were used in the investigation An experimental study on the swelling pressure of the bentonitebased materials

Limestone crusher, ultrafine dolomite crusher

Water slag processing

Basalt distribution

3.8x13m open flow cement mill output

Crushed kaolinite clay stone pier price

Powder mill price

prt1211 grinding production line

Grinding production line machine

p325 mesh limestone powder production line vertical shaft bluestone mill specifications table

Electromagnetic vibration highfrequency screen

Mine composite ore grinding machine

Jiaxing mining

Guizhou calcium powder factory equipment

Cracking carbon black ore powder machine

Working principle of kaolin limestone crushing machinery

Twowing Raymond mill

Where can I find grinding mill in Zhejiang

How much does calcium carbide mud grinding mill mineral grinding machinery cost

Machinemade calcium powder complete equipment

40 tons per hour high pressure suspension roller mill calcium carbonate crushing station

What are the slag powder companies

Yunnan Provincial Commission of Industry and Information Technology's Stone Yard Closure Policy Yunnan Provincial Commission of Industry and Information Technology's Stone Yard Closure Policy Yunnan Provincial Commission of Industry and Information Technology's Stone Yard Closure Policy

Can the ore grinding mill cut into the kaolin grinding mill

Calcium carbonate foundation density detection standard

Proposal report on anthracite lignite grinding mill for mining

Manufacturing wooden buttons source manufacturer automatic machinery

Micro powder grinding equipment bearings

Machine to make stone into sand

What lubricating oil is used for quicklime limestone crusher in winter

Calcite heavy calcium grinding mill Raymond mill