degradation of mortar under advective flow column

Degradation of mortar under advective flow: Column ...

Mar 01, 2016  Degradation of mortar under advective flow: Column experiments and reactive transport modeling. ... Schematic representation of the experimental mortar column and the model setup. Dimensions of the model domain (L’ and R 2) were calculated as follows. The volumes of both the experimental and model columns were considered to be the same.

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Degradation of mortar under advective flow: Column ...

To study the alteration of Portland cement mortar from the El Cabril disposal facility under advective water flow conditions, and to test the applicability of the C–S–H dissolution rate law obtained in our previous study, experiments using columns filled with mortar fragments were performed.

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Degradation of mortar under advective flow: Column ...

Abstract To study the alteration of Portland cement mortar from the El Cabril disposal facility under advective water flow conditions, and to test the applicability of the C–S–H dissolution rate law obtained in our previous study, experiments using columns filled with mortar fragments were performed. Variation of the chemical composition of the output solutions and the analyses of the ...

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Mineral dissolution and precipitation kinetics

Cement and Concrete Research 72, 76-89. Trapote-Barreira et al. (2016) Degradation of mortar under advective flow: column experiments and reactive transport modeling. Cement and

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Dissolution-precipitation processes

Trapote-Barreira A., Cama J., Soler J. M., Lothenbach B. (2016) Degradation of mortar under advective flow: Column experiments and reactive transport modeling. Cement and Concrete Research 81, 81-93. Cement and Concrete Research 81, 81-93.

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Advection, Dispersion, Sorption, Degradation, Attenuation

UNESCO – EOLSS SAMPLE CHAPTERS GROUNDWATER – Vol. II – Advection, Dispersion, Sorption, Degradation, Attenuation - Dirk Schulze-Makuch ©Encyclopedia of Life Support Systems (EOLSS) mass and groundwater will move at the same advective rate. The effective porosity ne in Eq.

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SRNL-TR-2008-00283, Estimation of Eh and pH Transitions in ...

volume of infiltrate that enters the column an equal volume of reacted infiltrate exits and is analyzed. Figure 1 shows a schematic of the flush mode.Each pore volume of fluid equilibrates with cementitious minerals. All transport of dissolved ions was assumed to be the result of advective flow

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Jordi CAMA tenured scientist PhD hydrogeochemistry

Degradation of mortar under advective flow: Column experiments and reactive transport modeling ... cement mortar from the El Cabril disposal facility under advective water flow conditions, and to ...

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Ed Matteo and LianGe Zheng - Prioritization of Cross ...

Dec 10, 2020  Administration under contract DE NA 0003525. SAND2020 13112 PE . Overview ... Cement plug/liner degradation . E-11 . EBS High Temp experimental data collection- ... Advective gas flow in bentonite ; Understand transport and permeability evolution in seals, buffer, and backfill

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Appendix D, MIS-MGR-RL-000001, Rev 00, 'Technical Update ...

barrier system degradation, flow, and transport process model. mis-mgr-rl-000001 rev 00 november 2001 intentionally left blank. mis-mgr-rl-000001 rev 00 d-1 november 2001 summary of recent information relevant to the engineered

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UPC - Grup d'Hidrologia Subterrània Línies de ...

Cement and Concrete Research 72, 76-89. Trapote-Barreira et al. (2016) Degradation of mortar under advective flow: column experiments and reactive transport modeling. Cement and Concrete Research 81, 81-93. (2) AIGÜES ÀCIDES DE MINA (AMD) 2.1) sulfurs. Articles relacionats:

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2 Overview of Engineered Barrier Systems Assessment of ...

Advective barriers rely on advective flow to control the migration of contaminant transport media. In an advective barrier, gradients are introduced to generate a flow counter to the indigenous direction of contaminant transport. ... (EPA, 1998): a maximum of approximately 30 m for jet-grouted and soil-cement column walls, ... Degradation of ...

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Acronym Topic description Lead Members

and fluid flow processes. One and two dimensional advective- ... hydrochemical composition at the column inlet. Cement-Clay In Europe, cementitious materials are considered to be used in ... of chemical degradation for a cracked concrete under near surface disposal conditions. The objective is to

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LCS Introduction - Grimsel

Bentonite - cement interactions; Influence of organic material (e.g. complexation, degradation), in particular the behaviour of super-plasticisers used in low pH cement; Experimental Concept. Soft and hard cement sources are emplaced in the advective flow system.

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Determination of Chlorinated Solvent Sorption by Porous ...

May 18, 2014  Experiments have been performed to investigate the sorption of trichloroethene (TCE) vapor by concrete material or, more specifically, the cement mortar component. Gas-flow experiments were conducted using columns packed with small pieces of cement mortar obtained from the grinding of typical concrete material. Transport and retardation of TCE at high vapor concentrations (500 mg L

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Curriculum vitae - IDAEA

rich solutions under different pressure and temperature conditions. Ref. revista / Libro: Chemical Geology Clave: A Volumen: 448 Páginas, inicial: 26 final: 42 Fecha: 2017 Autores (p.o. de firma): Dávila G., Luquot L., Soler J. M., Cama J. Título: 2D reactive transport modeling of

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Low-pH cement mortar-bentonite perturbations in a small ...

A half-sample of the cement mortar-bentonite column was divided into two: one quarter was used to perform XRD and SEM-EDX analyses, and the other quarter was used to perform GI-XRD analyses. All analyses were performed to study the interaction between the cement and bentonite and the effects of the water flow.

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Cement-rock interaction: Infiltration of a high-pH ...

was continuously injected, under a constant pressure gradient, into a cylindrical core of granite containing a frac-ture. This high-pH solution was a synthetic version of solutions characteristic of early stages in the degradation of cement. The interaction between the rock and the solutions was reflected by significant changes in the composition

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(PDF) Modelling long-term evolution of cementitious ...

Modelling long-term evolution of cementitious materials used in waste disposal. Diederik Jacques. Download with Google Download with Facebook

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Varying Relative Degradation Rates of Oil in Different ...

Degradation of oil contamination yields stabilized products by removing and transforming reactive and volatile compounds. In contaminated coastal environments, the processes of degradation are influenced by shoreline energy, which increases the surface area of the oil as well as exchange between oil, water, sediments, microbes, oxygen, and nutrients. Here, a ramped pyrolysis carbon isotope ...

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2 Overview of Engineered Barrier Systems Assessment of ...

Advective barriers rely on advective flow to control the migration of contaminant transport media. In an advective barrier, gradients are introduced to generate a flow counter to the indigenous direction of contaminant transport. ... (EPA, 1998): a maximum of approximately 30 m for jet-grouted and soil-cement column walls, ... Degradation of ...

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Low-pH cement mortar-bentonite perturbations in a small ...

A half-sample of the cement mortar-bentonite column was divided into two: one quarter was used to perform XRD and SEM-EDX analyses, and the other quarter was used to perform GI-XRD analyses. All analyses were performed to study the interaction between the cement and bentonite and the effects of the water flow.

get price

LCS Introduction - Grimsel

Bentonite - cement interactions; Influence of organic material (e.g. complexation, degradation), in particular the behaviour of super-plasticisers used in low pH cement; Experimental Concept. Soft and hard cement sources are emplaced in the advective flow system.

get price

Acronym Topic description Lead Members

and fluid flow processes. One and two dimensional advective- ... hydrochemical composition at the column inlet. Cement-Clay In Europe, cementitious materials are considered to be used in ... of chemical degradation for a cracked concrete under near surface disposal conditions. The objective is to

get price

Determination of Chlorinated Solvent Sorption by Porous ...

May 18, 2014  Experiments have been performed to investigate the sorption of trichloroethene (TCE) vapor by concrete material or, more specifically, the cement mortar component. Gas-flow experiments were conducted using columns packed with small pieces of cement mortar obtained from the grinding of typical concrete material. Transport and retardation of TCE at high vapor concentrations (500 mg L

get price

Determination of Chlorinated Solvent Sorption by Porous ...

Column experiments were performed to determine the retardation of TCE in the cement mortar under dynamic conditions. The experimental apparatus was derived from the one used by Brusseau et al. (1997) and Popovicova and Brusseau (1998). It is constructed with stainless steel (SS) to obtain an inert system (Fig. 1). We used 3.2-mm SS tubing and ...

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Regional‐scale advective, diffusive, and eruptive dynamics ...

Regional‐scale advective, diffusive, and eruptive transport dynamics of CO 2 and brine within a natural analogue in the northern Paradox Basin, Utah, were explored by integrating numerical simulations with soil CO 2 flux measurements. Deeply sourced CO 2 migrates through steeply dipping fault zones to the shallow aquifers predominantly as an aqueous phase.

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Varying Relative Degradation Rates of Oil in Different ...

Degradation of oil contamination yields stabilized products by removing and transforming reactive and volatile compounds. In contaminated coastal environments, the processes of degradation are influenced by shoreline energy, which increases the surface area of the oil as well as exchange between oil, water, sediments, microbes, oxygen, and nutrients. Here, a ramped pyrolysis carbon isotope ...

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(PDF) Modelling long-term evolution of cementitious ...

Modelling long-term evolution of cementitious materials used in waste disposal. Diederik Jacques. Download with Google Download with Facebook

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Ulrich Mayer - UBC Professor - Faculty Member - Researcher ...

A benchmark for soil organic matter degradation under variably saturated flow conditions (2019) Computational Geosciences, Advancing knowledge of gas migration and fugitive gas from energy wells in northeast British Columbia, Canada (2019) Greenhouse Gases: Science and Technology, 9 (2), 134-151

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An Overview of Modeling Cement Based Materials at Elevated ...

Feb 20, 2011  Application of mechanics of multi-phase porous media for modeling cement based materials at high temperature is presented. The considerations are based on the mathematical model of mechanistic type, developed by the authors within recent years. The model has been previously experimentally validated and successfully applied for analyzing performance of various concrete

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Civil, Construction and Environmental Engineering Theses ...

Electronic collaboration for highway projects under $10 million, Jose A. Perez Reboredo. PDF. Remote monitoring and security of covered bridges in the United States, Ryan Allen Sievers. PDF. Fate and transport of mercury in portland cement manufacturing facilities, Joel K. Sikkema. PDF. Clogging effects of portland cement pervious concrete, Bin ...

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Wilfried Pfingsten LES Paul Scherrer Institut (PSI)

Pfingsten, W. (1998). Late 1998 considerations on mortar M1 column experiments and modelling to investigate the degradation of the most permeable component of a L/ILW repository and implications for the pH plume development. TM-44-98-17, Paul Scherrer Institut, Villigen, Switzerland: pp. 33. Further reports. Pfingsten, W., 2008.

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Biogeochemical Changes During Bio-cementation Mediated by ...

Aug 08, 2019  Urea degradation was significantly faster in the augmentation columns with ≈75% urea degraded after 5 hours and full urea degradation after 22 hours (Fig. 4a). In the stimulation columns

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