TY - CHAP
T1 - On the Prediction of Strength and Optimum Mix-Designs of Mineral-Waste-Based Alkali-Activated Materials
AU - Zoegl, Iris
AU - Rudić, Ognjen
AU - Ratz, Bettina
AU - Hassan, Amr
AU - Radinger, Stefanie
AU - Steindl, Florian
AU - Valazza-Grengg, Cyrill
AU - Dietzel, Martin
AU - Raič, Sara
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.
PY - 2025
Y1 - 2025
N2 - 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.
AB - 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.
KW - Alkali-activated materials
KW - design of experiments
KW - response surface methodology
KW - waste-based materials
UR - http://www.scopus.com/inward/record.url?scp=85209372996&partnerID=8YFLogxK
U2 - 10.1007/978-3-031-70277-8_10
DO - 10.1007/978-3-031-70277-8_10
M3 - Chapter
AN - SCOPUS:85209372996
SN - 978-3-031-70276-1
T3 - RILEM Bookseries
SP - 80
EP - 88
BT - Proceedings of the RILEM Spring Convention and Conference 2024. RSCC 2024
PB - Springer, Cham
T2 - RILEM Spring Convention and Conference, RSCC 2024
Y2 - 10 April 2024 through 12 April 2024
ER -