Chloride and combined chemical attack of saline solutions on modified oil well cement pastes

Abstract The effect of complex geothermal water composition in comparison with that of a single NaCl solution was studied on cement pastes prepared by partial substitution of cement with silica fume and metakaolin in different proportions. After 90 days of hydration in solutions or water, TGA, XRD, FTIR, ion chromatography, SEM, volume change, and compressive strength (CS) measurements were used to evaluate the impact of solutions on the systems. Higher Al 3+ content in blended samples resulted in a greater ability to bind chlorides in Cl–AFm. A lower amount of free Cl − restrained delayed ettringite formation. Less significant volume changes together with the formation of C–(A–)S–H phases promoted by both solutions led to lower porosities and higher CSs than those of referential paste. NaCl solution showed a bigger negative influence than the geothermal one.

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Publication Details

Journal
Journal of Thermal Analysis and Calorimetry
Published
2025-06-30
DOI
https://doi.org/10.1007/s10973-025-14483-3
Citations
1
Primary Topic
Concrete and Cement Materials Research
Type
article
Field-Weighted Citation Impact
0.95

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article

Chloride and combined chemical attack of saline solutions on modified oil well cement pastes

Taher A. Tawfik, Michal Slaný, Lenka Buňová, Jiří Másilko et al.
1 citations
Journal of Thermal Analysis and Calorimetry
Concrete and Cement Materials Research
0.95
article

Chloride and combined chemical attack of saline solutions on modified oil well cement pastes

Taher A. Tawfik, Michal Slaný, Lenka Buňová, Jiří Másilko, Eva Kuzielová, Kristína Compeľová
article en
1 citations

Abstract

Abstract The effect of complex geothermal water composition in comparison with that of a single NaCl solution was studied on cement pastes prepared by partial substitution of cement with silica fume and metakaolin in different proportions. After 90 days of hydration in solutions or water, TGA, XRD, FTIR, ion chromatography, SEM, volume change, and compressive strength (CS) measurements were used to evaluate the impact of solutions on the systems. Higher Al 3+ content in blended samples resulted in a greater ability to bind chlorides in Cl–AFm. A lower amount of free Cl − restrained delayed ettringite formation. Less significant volume changes together with the formation of C–(A–)S–H phases promoted by both solutions led to lower porosities and higher CSs than those of referential paste. NaCl solution showed a bigger negative influence than the geothermal one.

Journal of Thermal Analysis and CalorimetryVol. 150(14)
Slovak University of Technology in Bratislava (SK), Institute of Chemistry of the Slovak Academy of Sciences (SK), Slovak Academy of Sciences (SK), Institute of Construction and Architecture of the Slovak Academy of Sciences (SK), Higher Institute of Engineering (EG), Trencianska Univerzita Alexandra Dubceka V Trencine (SK), Brno University of Technology (CZ)
European Commission, Grantová Agentura České Republiky, Agentúra na Podporu Výskumu a Vývoja, Vedecká Grantová Agentúra MŠVVaŠ SR a SAV, Agentúra Ministerstva Školstva, Vedy, Výskumu a Športu SR, HORIZON EUROPE Research Infrastructures
Openalex Percentile: Top 24%
Concrete and Cement Materials Research
0.95
DOIOpen Access PDFOpenAlex
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