Alkali concentrations of pore solution in hydrating OPC

Jos Brouwers, R.J. van Eijk

    Research output: Contribution to journalArticleAcademicpeer-review

    53 Citations (Scopus)

    Abstract

    In order to study the pore solution, the release and binding of alkalis in a hydrating cement system have been studied. First, the binding factors for sodium and potassium as determined by Taylor [Adv. Cem. Res. 1 (1987) 5] and the corresponding distribution ratios as determined by Hong and Glasser [Cem. Concr. Res. 29 (1999) 1893; Cem. Concr. Res. in press] are related to each other. It follows that the sorption of sodium is practically identical, whereas for potassium Taylor [Adv. Cem. Res. 1 (1987) 5] predicts a substantial lower degree of sorption. The concept of alkali release, pore solution decrease and sorption by formed calcium-silicate hydrate (C-S-H), is incorporated in the NIST hydration model (CEMHYD3D). Subsequently, the model is compared with ordinary Portland cement (OPC) hydration experiments reported by Larbi et al. [Cem. Concr. Res. 20 (1990) 506]. Good agreement is obtained when the distribution ratios of Hong and Glasser [Cem. Concr. Res. 29 (1999) 1893] are applied. The results suggest that C-S-H is the only binder of alkalis in hydrating OPC.
    Original languageUndefined
    Pages (from-to)191-196
    JournalCement and concrete research
    Volume33
    Issue number2
    DOIs
    Publication statusPublished - 2003

    Keywords

    • IR-43687
    • METIS-207178

    Cite this

    Brouwers, Jos ; van Eijk, R.J. / Alkali concentrations of pore solution in hydrating OPC. In: Cement and concrete research. 2003 ; Vol. 33, No. 2. pp. 191-196.
    @article{832199ebed094cd19831a6396b0154b6,
    title = "Alkali concentrations of pore solution in hydrating OPC",
    abstract = "In order to study the pore solution, the release and binding of alkalis in a hydrating cement system have been studied. First, the binding factors for sodium and potassium as determined by Taylor [Adv. Cem. Res. 1 (1987) 5] and the corresponding distribution ratios as determined by Hong and Glasser [Cem. Concr. Res. 29 (1999) 1893; Cem. Concr. Res. in press] are related to each other. It follows that the sorption of sodium is practically identical, whereas for potassium Taylor [Adv. Cem. Res. 1 (1987) 5] predicts a substantial lower degree of sorption. The concept of alkali release, pore solution decrease and sorption by formed calcium-silicate hydrate (C-S-H), is incorporated in the NIST hydration model (CEMHYD3D). Subsequently, the model is compared with ordinary Portland cement (OPC) hydration experiments reported by Larbi et al. [Cem. Concr. Res. 20 (1990) 506]. Good agreement is obtained when the distribution ratios of Hong and Glasser [Cem. Concr. Res. 29 (1999) 1893] are applied. The results suggest that C-S-H is the only binder of alkalis in hydrating OPC.",
    keywords = "IR-43687, METIS-207178",
    author = "Jos Brouwers and {van Eijk}, R.J.",
    year = "2003",
    doi = "10.1016/S0008-8846(02)01022-0",
    language = "Undefined",
    volume = "33",
    pages = "191--196",
    journal = "Cement and concrete research",
    issn = "0008-8846",
    publisher = "Elsevier",
    number = "2",

    }

    Alkali concentrations of pore solution in hydrating OPC. / Brouwers, Jos; van Eijk, R.J.

    In: Cement and concrete research, Vol. 33, No. 2, 2003, p. 191-196.

    Research output: Contribution to journalArticleAcademicpeer-review

    TY - JOUR

    T1 - Alkali concentrations of pore solution in hydrating OPC

    AU - Brouwers, Jos

    AU - van Eijk, R.J.

    PY - 2003

    Y1 - 2003

    N2 - In order to study the pore solution, the release and binding of alkalis in a hydrating cement system have been studied. First, the binding factors for sodium and potassium as determined by Taylor [Adv. Cem. Res. 1 (1987) 5] and the corresponding distribution ratios as determined by Hong and Glasser [Cem. Concr. Res. 29 (1999) 1893; Cem. Concr. Res. in press] are related to each other. It follows that the sorption of sodium is practically identical, whereas for potassium Taylor [Adv. Cem. Res. 1 (1987) 5] predicts a substantial lower degree of sorption. The concept of alkali release, pore solution decrease and sorption by formed calcium-silicate hydrate (C-S-H), is incorporated in the NIST hydration model (CEMHYD3D). Subsequently, the model is compared with ordinary Portland cement (OPC) hydration experiments reported by Larbi et al. [Cem. Concr. Res. 20 (1990) 506]. Good agreement is obtained when the distribution ratios of Hong and Glasser [Cem. Concr. Res. 29 (1999) 1893] are applied. The results suggest that C-S-H is the only binder of alkalis in hydrating OPC.

    AB - In order to study the pore solution, the release and binding of alkalis in a hydrating cement system have been studied. First, the binding factors for sodium and potassium as determined by Taylor [Adv. Cem. Res. 1 (1987) 5] and the corresponding distribution ratios as determined by Hong and Glasser [Cem. Concr. Res. 29 (1999) 1893; Cem. Concr. Res. in press] are related to each other. It follows that the sorption of sodium is practically identical, whereas for potassium Taylor [Adv. Cem. Res. 1 (1987) 5] predicts a substantial lower degree of sorption. The concept of alkali release, pore solution decrease and sorption by formed calcium-silicate hydrate (C-S-H), is incorporated in the NIST hydration model (CEMHYD3D). Subsequently, the model is compared with ordinary Portland cement (OPC) hydration experiments reported by Larbi et al. [Cem. Concr. Res. 20 (1990) 506]. Good agreement is obtained when the distribution ratios of Hong and Glasser [Cem. Concr. Res. 29 (1999) 1893] are applied. The results suggest that C-S-H is the only binder of alkalis in hydrating OPC.

    KW - IR-43687

    KW - METIS-207178

    U2 - 10.1016/S0008-8846(02)01022-0

    DO - 10.1016/S0008-8846(02)01022-0

    M3 - Article

    VL - 33

    SP - 191

    EP - 196

    JO - Cement and concrete research

    JF - Cement and concrete research

    SN - 0008-8846

    IS - 2

    ER -