As part of the TREEADS project, the feasibility of using post-fire wood ashes (PWA) to develop alkali-activated materials (AAMs) was investigated. Seven samples of virgin wood (Chestnut, Walnut, Hazelnut, Elm, Poplar, Oak, Hornbeam) were used to produce PWAs. Additional non-industrial beech wood ash (BWA) was collected from food sector. Due to similar mineral composition and better availability in mass, BWA has been selected for partial replacement of fly ash and/or ground granulated blast furnace slag to produce AAMs. The samples were subjected to chemical-physical characterisation, including X-ray diffraction, Fourier-Transform Infrared Spectroscopy, determination of apparent density and porosity and mechanical characterization. The results showed that the replacement of BWA in the range of 15-35% led to an improvement of the 28-day compressive strength up to a maximum of about 15 MPa.
Wood ash based alkali-activated materials / De Michele, R.; Liguori, B.; Caputo, D.; Menna, C.. - (2025), pp. 185-192. ( 4th fib Italy YMG Symposium on Concrete and Concrete Structures, 2025 ita 2025).
Wood ash based alkali-activated materials
De Michele R.;Liguori B.;Caputo D.;Menna C.
2025
Abstract
As part of the TREEADS project, the feasibility of using post-fire wood ashes (PWA) to develop alkali-activated materials (AAMs) was investigated. Seven samples of virgin wood (Chestnut, Walnut, Hazelnut, Elm, Poplar, Oak, Hornbeam) were used to produce PWAs. Additional non-industrial beech wood ash (BWA) was collected from food sector. Due to similar mineral composition and better availability in mass, BWA has been selected for partial replacement of fly ash and/or ground granulated blast furnace slag to produce AAMs. The samples were subjected to chemical-physical characterisation, including X-ray diffraction, Fourier-Transform Infrared Spectroscopy, determination of apparent density and porosity and mechanical characterization. The results showed that the replacement of BWA in the range of 15-35% led to an improvement of the 28-day compressive strength up to a maximum of about 15 MPa.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
