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Title

Reactive transport modeling of CO2 through cementitious materials under CO2 geological storage conditions

Publication Year

2013

Author(s)
  • Shen, Jiyun
  • Dangla, Patrick
  • Thiery, Mickael
Source
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL Volume: 18 Pages: 75-87 Published: 2013
ISSN
1750-5836 eISSN: 1878-0148
Abstract

A reactive transport model is proposed to simulate the reactivity of cement in contact with CO2-saturated brine and supercritical CO2 (scCO(2)). Dissolution and precipitation reactions for portlandite (CH) and calcite (C (C) over bar) are described by mass action laws and threshold of ion activity products in order to account for complete dissolved minerals. A generalization of the mass action law is derived from thermodynamics and applied to calcium silicate hydrates (C-S-H) to take into account the continuous variation (decrease) of the C/S ratio during the dissolution reaction of C-S-H. We assume thermodynamical equilibrium for chemical processes. The porosity changes induced by the precipitation and dissolution reactions are also taken into account. Ion transport is described by using the Nernst-Planck equation as well as advection. Couplings between transport equations and chemical reactions are treated thanks to several mass balance equations written for each atom. We simulate by a finite volume method some experiments reported in the literature and compare our numerical results to these experimental observations. (c) 2013 Elsevier Ltd. All rights reserved.

Author Keyword(s)
  • Carbonation
  • Supercritical CO2
  • Transport
  • Cement
  • C-S-H
  • Decalcification
KeyWord(s) Plus
  • WELL CEMENT
  • SEQUESTRATION CONDITIONS
  • HYDRAULIC CONDUCTIVITY
  • PORTLAND-CEMENT
  • SOLID-SOLUTIONS
  • PORE STRUCTURE
  • SIMULATION
  • SHRINKAGE
  • EQUATIONS
  • POROSITY
ESI Discipline(s)
  • Engineering
  • Environment/Ecology
  • Geosciences
Web of Science Category(ies)
  • Energy & Fuels
  • Engineering, Environmental
Adress(es)

[Shen, Jiyun; Dangla, Patrick] Univ Paris Est, UMR Navier, UMR8205, CNRS,Ecole Ponts ParisTech, F-77420 Champs Sur Marne, France; [Thiery, Mickael] Univ Paris Est, IFSTTAR, Dept Mat, Microstruct Durabil & Modelling Grp, F-75732 Paris, France

Reprint Adress

Dangla, P (reprint author), Univ Paris Est, UMR Navier, UMR8205, CNRS,Ecole Ponts ParisTech, 2 Allee Kepler, F-77420 Champs Sur Marne, France.

Country(ies)
  • France
CNRS - Adress(es)
  • Laboratoire Navier (NAVIER), UMR8205
Accession Number
WOS:000327904600008
uid:/N5DN8V31
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