C-S-H/solution interface: Experimental and Monte Carlo studies
(2011) In Cement and Concrete Research 41(2). p.161-168- Abstract
- The surface charge density of C-S-H particles appears to be one of the key parameters for predicting the cohesion strength, understanding the ion retention, the pollutant leakage, and admixture adsorption in hydrated cement pastes. This paper presents a Monte Carlo simulation of the surface-ions interactions that permits the prediction of surface charge density (sigma), electrokinetic potential (zeta) and ions adsorption of mineral surfaces in equilibrium with a given electrolyte solution. Simulated results are compared to experimental data obtained by titration, electrokinetic potential measurements and ions uptake in the case of C-S-H suspensions. An excellent agreement is found between simulated and experimental results. The wide spread... (More)
- The surface charge density of C-S-H particles appears to be one of the key parameters for predicting the cohesion strength, understanding the ion retention, the pollutant leakage, and admixture adsorption in hydrated cement pastes. This paper presents a Monte Carlo simulation of the surface-ions interactions that permits the prediction of surface charge density (sigma), electrokinetic potential (zeta) and ions adsorption of mineral surfaces in equilibrium with a given electrolyte solution. Simulated results are compared to experimental data obtained by titration, electrokinetic potential measurements and ions uptake in the case of C-S-H suspensions. An excellent agreement is found between simulated and experimental results. The wide spread idea that calcium is a potential determining ion in cement paste systems appears to be incorrect. Instead, the pH controls the charging behaviour of C-S-H nano-particles. This paper also shows to what extent the electrostatic interactions contribute to the measured Ca/Si ratio. (C) 2010 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1878125
- author
- Labbez, Christophe ; Pochard, Isabelle ; Jönsson, Bo LU and Nonat, Andre
- organization
- publishing date
- 2011
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- B: Calcium-silicate-hydrate (C-S-H), Surface charge density, Electrokinetic potential, Cation, Adsorption
- in
- Cement and Concrete Research
- volume
- 41
- issue
- 2
- pages
- 161 - 168
- publisher
- Elsevier
- external identifiers
-
- wos:000286861100003
- scopus:78650722551
- ISSN
- 0008-8846
- DOI
- 10.1016/j.cemconres.2010.10.002
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Theoretical Chemistry (S) (011001039)
- id
- 2979af71-d997-4bb5-887b-12cd8dba307c (old id 1878125)
- date added to LUP
- 2016-04-01 14:10:54
- date last changed
- 2023-01-04 03:07:55
@article{2979af71-d997-4bb5-887b-12cd8dba307c,
abstract = {{The surface charge density of C-S-H particles appears to be one of the key parameters for predicting the cohesion strength, understanding the ion retention, the pollutant leakage, and admixture adsorption in hydrated cement pastes. This paper presents a Monte Carlo simulation of the surface-ions interactions that permits the prediction of surface charge density (sigma), electrokinetic potential (zeta) and ions adsorption of mineral surfaces in equilibrium with a given electrolyte solution. Simulated results are compared to experimental data obtained by titration, electrokinetic potential measurements and ions uptake in the case of C-S-H suspensions. An excellent agreement is found between simulated and experimental results. The wide spread idea that calcium is a potential determining ion in cement paste systems appears to be incorrect. Instead, the pH controls the charging behaviour of C-S-H nano-particles. This paper also shows to what extent the electrostatic interactions contribute to the measured Ca/Si ratio. (C) 2010 Elsevier Ltd. All rights reserved.}},
author = {{Labbez, Christophe and Pochard, Isabelle and Jönsson, Bo and Nonat, Andre}},
issn = {{0008-8846}},
keywords = {{B: Calcium-silicate-hydrate (C-S-H); Surface charge density; Electrokinetic potential; Cation; Adsorption}},
language = {{eng}},
number = {{2}},
pages = {{161--168}},
publisher = {{Elsevier}},
series = {{Cement and Concrete Research}},
title = {{C-S-H/solution interface: Experimental and Monte Carlo studies}},
url = {{http://dx.doi.org/10.1016/j.cemconres.2010.10.002}},
doi = {{10.1016/j.cemconres.2010.10.002}},
volume = {{41}},
year = {{2011}},
}