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13C,27Al and 29Si NMR investigation of the hydration kinetics of Portland-limestone cement pastes containing CH3-COO¯-R+(R=H or Na) additives

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F22%3A00555838" target="_blank" >RIV/68378297:_____/22:00555838 - isvavai.cz</a>

  • Result on the web

    <a href="https://doi.org/10.3390/ma15062004" target="_blank" >https://doi.org/10.3390/ma15062004</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.3390/ma15062004" target="_blank" >10.3390/ma15062004</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    13C,27Al and 29Si NMR investigation of the hydration kinetics of Portland-limestone cement pastes containing CH3-COO¯-R+(R=H or Na) additives

  • Original language description

    The hydration kinetics of Portland-limestone cement pastes with organic additives in the form of acetic acid and sodium acetate were studied by using solid-state 13C, 27Al and 29Si NMR spectroscopy. The evolution of the relative content of various phases was monitored over the period of one month: amorphous and crystalline calcite (in 13C spectra), ettringite, aluminum in C-S-H gel, calcium aluminates and calcium hydroaluminates (in 27Al spectra), as well as alite, belite and siliconnin C-S-H gel (in 29Si spectra). The retarding effect of the additives on cement hydration at early age was demonstrated. We show that the kinetics of phase assemblage formation is influenced by the acetate ion adsorption on the surface of the anhydrous cement components and hydrated phases. The kinetics of formation of ettringite in the cement paste, depending on the addition of acetic and or sodium acetate, is discussed in the context of potential thaumasite sulfate attack.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20501 - Materials engineering

Result continuities

  • Project

    <a href="/en/project/GC21-35772J" target="_blank" >GC21-35772J: Microstructural changes in Portland-limestone cement pastes under the combined effect of sulfate and chloride ions</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2022

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Materials

  • ISSN

    1996-1944

  • e-ISSN

    1996-1944

  • Volume of the periodical

    15

  • Issue of the periodical within the volume

    6

  • Country of publishing house

    CH - SWITZERLAND

  • Number of pages

    13

  • Pages from-to

    2004

  • UT code for WoS article

    000774907300001

  • EID of the result in the Scopus database

    2-s2.0-85126448095