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BÍLEK, V. NOVOTNÝ, R. KOPLÍK, J. KADLEC, M. KALINA, L.
Original Title
Philosophy of rational mixture proportioning of alkali-activated materials validated by the hydration kinetics of alkali-activated slag and its microstructure
Type
journal article in Web of Science
Language
English
Original Abstract
There are many highly variable approaches to mix proportioning of alkali-activated materials (AAMs), which considerably contribute to their great complexity and often incomparability of the obtained results. Therefore, this paper suggests one specific approach, based on the molarity of the activator and the volume fraction of the precursor. First, an inherently simple calculation procedure is introduced to obtain the weights of the raw ma-terials required to prepare a desired volume of AAM paste and possibly mortar or concrete. Second, the rationale for this approach is demonstrated using calorimetric experiments conducted on alkali-activated slag pastes, activated with sodium and potassium hydroxides, waterglasses, and carbonates in wide ranges of molarities. Third, the applicability and impact of the presented approach are discussed in-depth, considering practical ap-plications. The overall outcome is a complex set of information emphasizing the importance of molarity, pre-cursor volume fraction, and space-filling ability of the reaction products for different activators.
Keywords
Calorimetry; Mixture proportioning; Microstructure; Hydration; Kinetics; Alkali activated cement; Granulated blast-furnace slag
Authors
BÍLEK, V.; NOVOTNÝ, R.; KOPLÍK, J.; KADLEC, M.; KALINA, L.
Released
9. 3. 2023
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Location
OXFORD
ISBN
0008-8846
Periodical
Cement and Concrete Research
Year of study
168
Number
107139
State
United Kingdom of Great Britain and Northern Ireland
Pages count
15
URL
https://www.sciencedirect.com/science/article/pii/S0008884623000510
BibTex
@article{BUT183485, author="Vlastimil {Bílek} and Radoslav {Novotný} and Jan {Koplík} and Martin {Kadlec} and Lukáš {Kalina}", title="Philosophy of rational mixture proportioning of alkali-activated materials validated by the hydration kinetics of alkali-activated slag and its microstructure", journal="Cement and Concrete Research", year="2023", volume="168", number="107139", pages="15", doi="10.1016/j.cemconres.2023.107139", issn="0008-8846", url="https://www.sciencedirect.com/science/article/pii/S0008884623000510" }