On the Prediction of Strength and Optimum Mix-Designs of Mineral-Waste-Based Alkali-Activated Materials

Iris Zoegl*, Ognjen Rudić, Bettina Ratz, Amr Hassan, Stefanie Radinger, Florian Steindl, Cyrill Valazza-Grengg, Martin Dietzel, Sara Raič

*Korrespondierende/r Autor/-in für diese Arbeit

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in Buch/BerichtBegutachtung

Abstract

Reducing the carbon footprint of building material production (~9% of anthropogenic CO2) in the short term is essential to achieve global climate targets. In this regard, certain mineral wastes and secondary raw-materials show large potential as low-CO2 alternatives to be utilized in alkali-activated materials (AAMs). In order to establish mineral-waste-based AAMs as strong future competitors in the construction industry, functional binder systems have to be developed to meet material requirements. Tapping into these unexploited waste streams and exploring their potential as binder components is based on their respective mineralogical and chemical compositions, which determine the desired material properties of the mix-design (expressed e.g. in elemental ratios such as Si/Al). By generating waste-stream-related patterns and variable associations in the context of bulk chemistry and mineralogy of available waste types, factors for the binder development stage are elaborated. During this step, optimum experimental conditions can be achieved by statistical methods such as the design of experiments (DOE) and response surface methodology (RSM), including desirability function-based methods. Such approaches yield time- and/or cost-efficient strategies by optimising the amount of available resources used. For preliminary results the following interactive variables were considered: (i) waste content, (ii) compressive strength and (iii) water/binder ratio. Future focus is given on the evaluation of more complex systems containing a variety waste sources.

Originalspracheenglisch
TitelProceedings of the RILEM Spring Convention and Conference 2024. RSCC 2024
Herausgeber (Verlag)Springer, Cham
Seiten80-88
Seitenumfang9
ISBN (elektronisch)978-3-031-70277-8
ISBN (Print)978-3-031-70276-1
DOIs
PublikationsstatusVeröffentlicht - 2025
VeranstaltungRILEM Spring Convention and Conference, RSCC 2024 - Milan, Italien
Dauer: 10 Apr. 202412 Apr. 2024

Publikationsreihe

NameRILEM Bookseries
Band55
ISSN (Print)2211-0844
ISSN (elektronisch)2211-0852

Konferenz

KonferenzRILEM Spring Convention and Conference, RSCC 2024
KurztitelRSCC 2024
Land/GebietItalien
OrtMilan
Zeitraum10/04/2412/04/24

ASJC Scopus subject areas

  • Tief- und Ingenieurbau
  • Bauwesen
  • Werkstoffmechanik

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