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Effect of amino alcohol admixtures on alkali-activated materials

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F20%3APU136662" target="_blank" >RIV/00216305:26310/20:PU136662 - isvavai.cz</a>

  • Result on the web

    <a href="http://mit.imt.si/izvodi/mit203/kalina.pdf" target="_blank" >http://mit.imt.si/izvodi/mit203/kalina.pdf</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.17222/mit.2019.150" target="_blank" >10.17222/mit.2019.150</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Effect of amino alcohol admixtures on alkali-activated materials

  • Original language description

    One of the most important technological problems associated with alkali-activated materials (AAM) is large shrinkage. Apossible solution to decrease the extensive drying shrinkage of these materials is the use of shrinkage-reducing admixtures(SRAs). The promising group of SRAs, from the perspective of using in AAMs, are amino alcohols. However, the efficiency ofreducing the drying shrinkage strongly depends on their chemical structure. Hence, the study is focused on the moleculararchitecture of amino alcohol surfactants and its relation to the affected properties of alkali-activated blast-furnace slag systems. Selected amino alcohols were tested in terms of the ability to reduce the surface tension of pore solution as well as to influencethe drying shrinkage, hydration mechanism and mechanical properties of AAMs. The study confirms that the length andbranching of the alkyl chain linked to the amino group play the key role in SRA efficiency. Amino alcohol surfactants with ahigh-carbon alkyl chain decreased dramatically both the surface tension and the drying shrinkage, but simultaneously negativelyaffected the process of alkali activation, resulting in a deterioration of the mechanical properties. Conversely, the addition of0.5w/ % of the surfactants with a low molecular weight, such as 2-(Methylamino)ethanol, showed a slight improvement of thecompressive strength after 7 d and 28 d, and at the same time reduced the drying shrinkage by 30 % compared to the referencesample.

  • 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/GA17-03670S" target="_blank" >GA17-03670S: Development of shrinkage reducing agents designed for alkali activated systems</a><br>

  • Continuities

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

Others

  • Publication year

    2020

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Materiali in tehnologije

  • ISSN

    1580-2949

  • e-ISSN

    1580-3414

  • Volume of the periodical

    54

  • Issue of the periodical within the volume

    3

  • Country of publishing house

    SI - SLOVENIA

  • Number of pages

    5

  • Pages from-to

    349-353

  • UT code for WoS article

    000541971400010

  • EID of the result in the Scopus database

    2-s2.0-85089340240