Publication detail

Philosophy of rational mixture proportioning of alkali-activated materials validated by the hydration kinetics of alkali-activated slag and its microstructure

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"
}