A computed-based model for the alkali concentrations in pore solution of hydrating Portland cement paste

W. Chen, Z.H. Shui, H.J.H. Brouwers

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Abstract

A computed-based model for the alkali concentrations in pore solution of hydrating Portland cement paste is proposed. Experimental data reported in different literatures with thirteen different recipes are analyzed.A3-D computer-based cement hydration modelCEMHYD3Dis used to simulate the hydration of these pastes. The models predictions are used as inputs for the alkali partition theory, which is used to derive the alkali binding capacity of C-S-H in hydrating Portland cement paste. A linear relation between the amount of boundalkali Na+ in C-S-H and its concentration in the pore solution is found, whilst a non-linear relation should be employed for the amount of bound-alkali K+ in C-S-H. New methods for predicting the alkali concentrations in the pore solution of hydrating Portland cement pastes are proposed based on the computer model CEMHYD3D, which is also validated with experimental results.
Original languageEnglish
Title of host publicationExcellence in concrete construction through innovation
Subtitle of host publicationproceedings of the International Conference on Concrete Construction, Kingston University, London, UK, 9-10 September 2008
EditorsMukesh C. Limbachiya, Hsein Y. Kew
Place of PublicationBoca Raton, FL
PublisherCRC Press
Pages207-214
ISBN (Electronic)978-0-203-88344-0
ISBN (Print)978-0-415-47592-1
Publication statusPublished - 9 Sep 2008
EventInternational Conference on Concrete Construction 2008 - Kingston University, Kingston upon Thames, United Kingdom
Duration: 9 Sep 200810 Sep 2008

Conference

ConferenceInternational Conference on Concrete Construction 2008
CountryUnited Kingdom
CityKingston upon Thames
Period9/09/0810/09/08

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Chen, W., Shui, Z. H., & Brouwers, H. J. H. (2008). A computed-based model for the alkali concentrations in pore solution of hydrating Portland cement paste. In M. C. Limbachiya, & H. Y. Kew (Eds.), Excellence in concrete construction through innovation: proceedings of the International Conference on Concrete Construction, Kingston University, London, UK, 9-10 September 2008 (pp. 207-214). Boca Raton, FL: CRC Press.
Chen, W. ; Shui, Z.H. ; Brouwers, H.J.H. / A computed-based model for the alkali concentrations in pore solution of hydrating Portland cement paste. Excellence in concrete construction through innovation: proceedings of the International Conference on Concrete Construction, Kingston University, London, UK, 9-10 September 2008. editor / Mukesh C. Limbachiya ; Hsein Y. Kew. Boca Raton, FL : CRC Press, 2008. pp. 207-214
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abstract = "A computed-based model for the alkali concentrations in pore solution of hydrating Portland cement paste is proposed. Experimental data reported in different literatures with thirteen different recipes are analyzed.A3-D computer-based cement hydration modelCEMHYD3Dis used to simulate the hydration of these pastes. The models predictions are used as inputs for the alkali partition theory, which is used to derive the alkali binding capacity of C-S-H in hydrating Portland cement paste. A linear relation between the amount of boundalkali Na+ in C-S-H and its concentration in the pore solution is found, whilst a non-linear relation should be employed for the amount of bound-alkali K+ in C-S-H. New methods for predicting the alkali concentrations in the pore solution of hydrating Portland cement pastes are proposed based on the computer model CEMHYD3D, which is also validated with experimental results.",
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Chen, W, Shui, ZH & Brouwers, HJH 2008, A computed-based model for the alkali concentrations in pore solution of hydrating Portland cement paste. in MC Limbachiya & HY Kew (eds), Excellence in concrete construction through innovation: proceedings of the International Conference on Concrete Construction, Kingston University, London, UK, 9-10 September 2008. CRC Press, Boca Raton, FL, pp. 207-214, International Conference on Concrete Construction 2008, Kingston upon Thames, United Kingdom, 9/09/08.

A computed-based model for the alkali concentrations in pore solution of hydrating Portland cement paste. / Chen, W.; Shui, Z.H.; Brouwers, H.J.H.

Excellence in concrete construction through innovation: proceedings of the International Conference on Concrete Construction, Kingston University, London, UK, 9-10 September 2008. ed. / Mukesh C. Limbachiya; Hsein Y. Kew. Boca Raton, FL : CRC Press, 2008. p. 207-214.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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AB - A computed-based model for the alkali concentrations in pore solution of hydrating Portland cement paste is proposed. Experimental data reported in different literatures with thirteen different recipes are analyzed.A3-D computer-based cement hydration modelCEMHYD3Dis used to simulate the hydration of these pastes. The models predictions are used as inputs for the alkali partition theory, which is used to derive the alkali binding capacity of C-S-H in hydrating Portland cement paste. A linear relation between the amount of boundalkali Na+ in C-S-H and its concentration in the pore solution is found, whilst a non-linear relation should be employed for the amount of bound-alkali K+ in C-S-H. New methods for predicting the alkali concentrations in the pore solution of hydrating Portland cement pastes are proposed based on the computer model CEMHYD3D, which is also validated with experimental results.

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Chen W, Shui ZH, Brouwers HJH. A computed-based model for the alkali concentrations in pore solution of hydrating Portland cement paste. In Limbachiya MC, Kew HY, editors, Excellence in concrete construction through innovation: proceedings of the International Conference on Concrete Construction, Kingston University, London, UK, 9-10 September 2008. Boca Raton, FL: CRC Press. 2008. p. 207-214