Abstract
Ladle furnace slags and fly ashes may be utilized as soil stabilizers in road construction as an option to reuse these by-products. However, there is no method grounded on experimental design to optimize the dosage of those by-products in mixtures with soil. This study applied the Simplex-Lattice method to perform the experimental design to optimize the design of soil-slag-fly ash mixtures. The soil was geomechanically characterized and the by-products were subjected to scanning electronic microscopy (SEM), X-ray diffraction (XRD), pozzolanic activity, and specific surface area analysis. The experimental mixtures were submitted to an unconfined compressive strength test and the results led to a response surface and a mathematical model that described the interaction between the components and allowed the mixture design optimization. This study highlights the potential of the Simplex-Lattice method to optimize soil-slag-fly ash mixtures and the technical suitability of utilizing those by-products as soil stabilizers.
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Acknowledgements
The authors thank Federal University of Viçosa, Brazil and Coordenação de Aperfeiçoamento Pessoal de Nível Superior–Brasil (CAPES) for supporting this study.
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Rodrigues, M.H.R., Pedroti, L.G., da Silva, T.O., Pitanga, H.N., Rodrigues, K.H.d., Lopes, E.C. (2021). The Simpex-Lattice Method Application to Optimize the Design of Soil-Slag-Fly Ash Mixtures. In: Li, J., et al. Characterization of Minerals, Metals, and Materials 2021. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-65493-1_61
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